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Journal articles on the topic 'Polylactic acid composite'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Ilyas, R. A., M. Y. M. Zuhri, H. A. Aisyah, et al. "Natural Fiber-Reinforced Polylactic Acid, Polylactic Acid Blends and Their Composites for Advanced Applications." Polymers 14, no. 1 (2022): 202. http://dx.doi.org/10.3390/polym14010202.

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Polylactic acid (PLA) is a thermoplastic polymer produced from lactic acid that has been chiefly utilized in biodegradable material and as a composite matrix material. PLA is a prominent biomaterial that is widely used to replace traditional petrochemical-based polymers in various applications owing environmental concerns. Green composites have gained greater attention as ecological consciousness has grown since they have the potential to be more appealing than conventional petroleum-based composites, which are toxic and nonbiodegradable. PLA-based composites with natural fiber have been exten

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2

Akonda, Mahmudul, S. Alimuzzaman, D. U. Shah, and A. N. M. Rahman. "Physico-Mechanical, Thermal and Biodegradation Performance of Random Flax/Polylactic Acid and Unidirectional Flax/Polylactic Acid Biocomposites." Fibers 6, no. 4 (2018): 98. http://dx.doi.org/10.3390/fib6040098.

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Fully biodegradable flax/polylactic acid (PLA) thermoplastic composites were fabricated by using random (nonwoven mat) and aligned (unidirectional yarn) flax fiber as reinforcements (39% flax by volume) and Polylactic acid (PLA) as matrix. Results revealed that the aligned flax fibers have a greater reinforcing effect due to the uniform distribution of load axially along the fiber length in the composite. The aligned flax/PLA and random flax/PLA showed the tensile strength of (83.0 ± 5.0) and (151.0 ± 7.0) MPa respectively and flexural strength of (130.0 ± 5.0) and (215.0 ± 7.2) MPa respective

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3

Li, Wen Hao, Xiao Yu He, Shu Wang, Bing Jie Xu, Yi Qiang Wu, and Ying Feng Zuo. "Preparation and Characterization of Three-Element Compound Plasticizing Bamboo Fiber-g-Polylactic Acid/Polylactic Acid Composite." Materials Science Forum 956 (June 2019): 201–11. http://dx.doi.org/10.4028/www.scientific.net/msf.956.201.

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In view of the phenomenon that the interfacial adhesion between bamboo fiber（BF）and polylactic acid (PLA) is poor and incompatible. Firstly the BF-g-PLA structure with hydrophobicity is synthesized through grafting lactic acid into bamboo fiber, then plasticizing the composite. Three-element compound plasticizer was prepared by mixing glycerol, tributyl citrate and formamide. The effect of the proportion and addition content of three-element plasticizer on the interfacial compatibility of the composite was investigated. The BF-g-PLA/PLA composites were characterized by scanning electron micros

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4

Drpić, Aleksandar. "Characteristics of composite materials based on polylactic acid (PLA)." Tehnika 78, no. 6 (2023): 633–38. http://dx.doi.org/10.5937/tehnika2306633d.

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Polylactic acid (PLA) is aliphatic thermoplastic polyester. Composites based on PLA are biocompatible, biodegradable and non-toxic, which are the main advantages of using such composites. Based on the research results described in this paper, it was concluded that by adding natural fibers to the composite, certain characteristics can be significantly improved. This paper describes some of composite material characteristics based on PLA, modification of PLA, advantages and disadvantages of using PLA in composite materials, composition and methods of obtaining PLA-based composites, as well as th

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5

Wu, Yi Qiang, Zhi Yong Qin, Yan Qing, and Xin Gong Li. "Effects of Different Pretreatments of Wood Fiber on Mechanical Properties of Biodegradable Composite." Advanced Materials Research 150-151 (October 2010): 1438–43. http://dx.doi.org/10.4028/www.scientific.net/amr.150-151.1438.

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Biodegradable composites of polylactic acid reinforced with wood fiber were fabricated by using twin screw extruder followed by the injection molding machine. The effects of different pretreatments of wood on mechanical properties of the biodegradable composite were discussed. The nature of composites were also examined through scanning electron microscope and Infrared Spectrum Analysis, the results reveal that both acid and stearic acid could be used as effective surface modifier for wood fiber/polylactic acid system, the composite system by adding Benzoic acid, the tensile strength has impro

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6

Wang, Yesong, Dekun Kong, Qing Zhang, Wei Li, and Jiang Liu. "Process parameters and mechanical properties of continuous glass fiber reinforced composites-polylactic acid by fused deposition modeling." Journal of Reinforced Plastics and Composites 40, no. 17-18 (2021): 686–98. http://dx.doi.org/10.1177/0731684421998017.

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This article focuses on 3D printing of continuous glass fiber reinforced composites-polylactic acid by fused deposition modeling. An innovative continuous fiber reinforced composite 3D printer and self-made continuous glass fiber reinforced filament-polylactic acid are applied to study the influences of process parameters including printing temperature, speed, layer height, and fiber volume fraction on mechanical properties of continuous glass fiber reinforced composites-polylactic acid printing samples. Tensile and three-point bending tests are carried out to explore the mechanical responses

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Zhao, Cang, Guang Li Song, and Hua Wu Liu. "The Mechanical Properties of Bamboo/PLA Composites Made by Biaxial Weft Knitted Fabrics." Advanced Materials Research 331 (September 2011): 89–92. http://dx.doi.org/10.4028/www.scientific.net/amr.331.89.

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Bamboo fiber reinforced polylactic acid composite is a kind of green composite materials with excellent performance, which is environmental safe and degradable in natural environment. Literature regarding the characteristics of reinforcement and matrix, pretreatment methods, preparation technology and biodegradable nature of the bamboo/ polylactic acid composite was reviewed and a particular bamoo/ polylactic acid composite made by biaxial weft knitted fabrics was developed. The composite demonstrated excellent tensile and flexural performance. In addition, the influence of the linear density

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8

Shin, Da Yong, Min-Ho Kang, In-Gu Kang, Hyoun-Ee Kim, and Seol-Ha Jeong. "In vitro and in vivo evaluation of polylactic acid-based composite with tricalcium phosphate microsphere for enhanced biodegradability and osseointegration." Journal of Biomaterials Applications 32, no. 10 (2018): 1360–70. http://dx.doi.org/10.1177/0885328218763660.

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A biodegradable polylactic acid composite containing tricalcium phosphate microsphere was fabricated. The composite exhibited enhanced biocompatibility and a well-interconnected porous structure that enabled tissue ingrowth after degradation. The tricalcium phosphate microspheres had an average size of 106 ± 43 μm and were incorporated into the polylactic acid matrix using a high-shear mixer. The resulting bioactivity and hydrophilicity were enhanced to levels comparable to those of a polylactic acid composite containing tricalcium phosphate powder, which is a well-known material used in the m

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9

Govindan, P., A. Arul Jeya Kumar, and A. Lakshmankumar. "Wear and Morphological Analysis on Basalt/Sisal Hybrid Fiber Reinforced Poly lactic acid Composites." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 236, no. 5 (2021): 1053–66. http://dx.doi.org/10.1177/14644207211067657.

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The investigation was undertaken to evaluate the wear behavior of basalt fiber and sisal fiber reinforced polylactic acid PLA composites. Basalt saline-treated chopped fiber and treated sisal chopped fiber were alloyed with polylactic acid and the samples were obtained using an injection mold in a twin-screw extruder. Three weight fraction samples were prepared, namely PBSi-1 (90% by weight polylactic acid, 5% by weight basalt and 5% by weight sisal), PBSi-2 (85% by weight polylactic acid, 7.5% by weight basalt and 7.5% by weight sisal) and PBSi-3 (80% by weight polylactic acid, 10% by weight

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10

Park, Ji-Won, Jae-Ho Shin, Gyu-Seong Shim, Kyeng-Bo Sim, Seong-Wook Jang, and Hyun-Joong Kim. "Mechanical Strength Enhancement of Polylactic Acid Hybrid Composites." Polymers 11, no. 2 (2019): 349. http://dx.doi.org/10.3390/polym11020349.

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In recent years, there has been an increasing need for materials that are environmentally friendly and have functional properties. Polylactic acid (PLA) is a biomass-based polymer, which has attracted research attention as an eco-friendly material. Various studies have been conducted on functionality imparting and performance improvement to extend the field of application of PLA. Particularly, research on natural fiber-reinforced composites have been conducted to simultaneously improve their environmental friendliness and mechanical strength. Research interest in hybrid composites using two or

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11

Zhou, Yuyang, Peng Deng, and Wei Chen. "Facilely Promoting the Concentration of Baicalin in Polylactic Acid Fiber for UV Shielding and Antibacterial Functions: A Customized and Sustainable Approach." Materials 17, no. 15 (2024): 3734. http://dx.doi.org/10.3390/ma17153734.

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There is a significant trend towards the integration of natural substances with bio-polymers for fully bio-based functional composites. Polylactic acid is regarded as a promising biodegradable polymer for replacing synthetic polymers. Differing from the case of natural fiber, the incompatibility of polylactic acid with bio-based molecules prevents it from being used to fabricate high-quality sustainable composites. This work presents a simultaneous ultraviolet shielding and antibacterial finishing process of polylactic acid combined with bioactive baicalin and an eco-friendly ester, which is h

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12

Zhang, Hongtao. "Research progress of polylactic acid/graphene composites and polylactic acid/ graphene oxide composites." Applied and Computational Engineering 130, no. 1 (2025): 23–29. https://doi.org/10.54254/2755-2721/2025.20277.

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The preparation of graphene/polylactic acid nanocomposites by modifying polylactic acid with graphene and its derivative graphene oxide is reviewed. It mainly includes solution method and melt blending method. Under different processing methods, the dispersion degree of nano fillers in the matrix is different, and the properties of the obtained materials are different. The choice of graphene and graphene oxide has a greater impact on the properties of the materials. The improvement of the mechanical properties of graphene /PLA composite materials has made the performance of PLA in packaging, t

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13

An, Xiaoli, Haibin Ma, Bin Liu, and Jizeng Wang. "Graphene Oxide Reinforced Polylactic Acid/Polyurethane Antibacterial Composites." Journal of Nanomaterials 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/373414.

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Nanocomposites from PLA/PU containing small concentrations of graphene oxide (GO) were prepared by simple liquid-phase mixing followed by casting. The as-prepared ternary PLA/PU/GO composite films exhibited good antibacterial activity against the gram-positiveStaphylococcus aureusand the gram-negativeEscherichia coli, due to the excellent antibacterial property of GO sheets with high specific surface area. The addition of GO inhibited the attachment and proliferation of microbes on the film surfaces, resulting in that the PLA/PU/GO composite films show remarkably improved antibacterial activit

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14

S.F.K. Sherwani, E.S. Zainudin, S.M. Sapuan, Z. Leman, and A. Khalina. "Recent Development of Natural Fibers Reinforced Polylactic Acid Composites." Journal of Research in Nanoscience and Nanotechnology 5, no. 1 (2022): 103–8. http://dx.doi.org/10.37934/jrnn.5.1.103108.

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The current research determines the most recent developments in natural fibres reinforced polylactic acid composites. Polylactic acid (PLA) is derived from renewable resources and is capable of degrading microorganisms, eliminating the pollution caused by petrochemical-based plastic. PLA is the most promising biodegradable material among biodegradable polymers since it is easily attacked by bacteria PLA decomposes easily, releasing H2O, CO2, and humus, the black material found in soil. PLA is a thermoplastic polymer that is widely used in the production of plastic bags, large planting cups, pa

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15

Chen, Yuanyuan, Luke M. Geever, John A. Killion, John G. Lyons, Clement L. Higginbotham, and Declan M. Devine. "Halloysite nanotube reinforced polylactic acid composite." Polymer Composites 38, no. 10 (2015): 2166–73. http://dx.doi.org/10.1002/pc.23794.

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16

Bajpai, Pramendra Kumar, Kishore Debnath, and Inderdeep Singh. "Hole making in natural fiber-reinforced polylactic acid laminates." Journal of Thermoplastic Composite Materials 30, no. 1 (2016): 30–46. http://dx.doi.org/10.1177/0892705715575094.

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Natural fiber-reinforced composite materials are finding wide acceptability in various engineering applications. A substantial increase in the volume of production of these composites necessitates high-quality cost-effective manufacturing. Drilling of holes is an important machining operation required to ascertain the assembly operations of intricate composite products. In the present experimental investigation, natural fiber (sisal and Grewia optiva fiber)-reinforced polylactic acid-based green composite laminates were developed using hot compression through film stacking method. The drilling

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17

Ogunsanya, Abiodun Olayinka, Deborah O. Daramola, Olumide Ezekiel Ogundoyin, Esther B. Iorkohol, and Sunday Thomas Ajayi. "Characterization and Degradation Behavior of Polylactic Acid Composite Incorporated with Egg-Shell Derived Hydroxyapatite for Bone Repair." Journal of Biomimetics, Biomaterials and Biomedical Engineering 68 (June 6, 2025): 81–104. https://doi.org/10.4028/p-t0otzh.

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This study explored eggshells as an eco-friendly and cost-effective material for synthesizing hydroxyapatite. The phase compositions and morphological structure of polylactic acid composite with and without co-doped hydroxyapatite addition via a melt blending approach were evaluated. Furthermore, the biodegradation profile of the polylactic acid composite in phosphate buffer solution was studied. The concentrations of PLA/HAp, PLA/7.5MgO-7.5ZnO, and PLA/12.5MgO-2.5ZnO samples, respectively, were examined in this study. The results of morphological evaluation showed a well-distributed irregular

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18

Liu, Weiliang, Tianyang Qiu, Liang Wang, and Wei Jiang. "Mechanical properties and injection molding processability of glass fiber modified polylactic acid composites." Journal of Physics: Conference Series 2390, no. 1 (2022): 012012. http://dx.doi.org/10.1088/1742-6596/2390/1/012012.

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Abstract In order to promote the development and application of environment-friendly plastics, a glass fiber-modified starch/polylactic acid composite was prepared by the melt extrusion method. The influence of glass fiber content on the mechanical and thermal properties of the composite was studied, and multi-objective optimization of the injection molding process was carried out with consideration of the influence of material properties. The results show that with the increase of glass fiber content from 0 to 5%, the tensile strength of the composite decreases first and then increases to an

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19

Dang, Wenyu. "A Unified Research on Advanced Biodegradable Copolymers Based on Their Biodegradable Properties." Transactions on Environment, Energy and Earth Sciences 4 (December 12, 2024): 185–92. https://doi.org/10.62051/6rzztt85.

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Recently, biodegradable materials can effectively reduce the environmental hazards. However, they still have limitations in terms of degradation rate and stability. This paper systematically reviews the progress of various biodegradable materials, such as polylactic acid, polyhydroxy-fatty acid ester, polybutylene succinate, and carbon dioxide copolymer. This study found that the degradation rate of polylactic acid can be enhanced through composite methods involving biomaterials. Polyhydroxyl fatty acid esters were synthesized using copolymer preparation, solution pouring, and hot pressing tec

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Muthuramamoorthy, Muthumareeswaran, Ali Aldalbahi, Khwater Mishaal Radi Alanzi, Saravanan Pandiaraj, and Ponmurugan Karuppiah. "Rubber seed shell as low-cost medium to produce lactic acid using Lactobacillus plantarum LB2 and fabrication of a polylactic acid-chitosan composite for fish fillet packing." BioResources 19, no. 4 (2024): 8860–81. http://dx.doi.org/10.15376/biores.19.4.8860-8881.

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Rubber seed shell (Hevea brasiliensis) was used as a low-cost substrate to produce lactic acid via Lactobacillus plantarum LB2. The medium components were initially screened by two-level full factorial design. Three variables (pH, moisture, and polyoxyethylene sorbitan monooleate (PSM)) were used in the central composite design and response surface methodology. The amount of PSM was found to be a significant variable in lactic acid production. Lactic acid was purified and used for the chemical fabrication of a polylactic acid-chitosan composite film. Compared with the polylactic acid, the comp

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21

Saavedra-Rojas, Felipe A., Sunil Bhandari, and Roberto A. Lopez-Anido. "Environmental Durability of Bio-Based and Synthetic Thermoplastic Composites in Large-Format Additive Manufacturing." Polymers 16, no. 6 (2024): 787. http://dx.doi.org/10.3390/polym16060787.

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This research investigates the durability of large-format 3D-printed thermoplastic composite material systems under environmental exposure conditions of moisture and freeze–thaw. Durability was evaluated for two bio-based composite material systems, namely wood-fiber-reinforced semi-crystalline polylactic acid (WF/PLA) and wood-fiber-reinforced amorphous polylactic acid (WF/aPLA), and one conventionally used synthetic material system, namely short-carbon-fiber-reinforced acrylonitrile butadiene styrene (CF/ABS). The moisture absorption, coefficient of moisture expansion, and reduction of relev

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22

Shi, Kang, Guoshuai Liu, Hui Sun, and Yunxuan Weng. "Polylactic Acid/Lignin Composites: A Review." Polymers 15, no. 13 (2023): 2807. http://dx.doi.org/10.3390/polym15132807.

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With the gradual depletion of petroleum resources and the increasing global awareness of environmental protection, biodegradable plastics are receiving more and more attention as a green substitute for traditional petroleum-based plastics. Poly (lactic acid) is considered to be the most promising biodegradable material because of its excellent biodegradability, biocompatibility, and good processability. However, the brittleness and high cost limit its application in more fields. Lignin, as the second largest renewable biopolymer in nature after cellulose, is not only rich in reserves and low i

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Ağırgan, Ahmet Özgür. "Broomcorn stalk fiber in nonwoven reinforced polylactic acid matrix composites." BioResources 20, no. 2 (2025): 3329–41. https://doi.org/10.15376/biores.20.2.3329-3341.

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The broomcorn plant (Sorghum bicolor (L.) Moench) is one of the main cereal crops and its grains are used in food and feed sectors while its stems are used in broom production and as a building material. Polylactic acid (PLA) is a biobased polymer that is widely used as a matrix material in natural fiber-reinforced composites. In this study, the aim is to use broomcorn plant stems, which are agricultural waste, as reinforcement in composite production. For this purpose, fiber was obtained by purifying broomcorn plant stems from woody cells with enzyme and NaOH. To easily comb the fibers, 10 wt

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Jeyasimman, D., J. Arun Prakash, R. Arun Prasath, A. Sivaraman, Pushpendra Singh, and P. Satishkumar. "Investigation of Thermomechanical and Flammability Behaviors of Hemp/Polypropylene Reinforced Polylactic Acid Composites." Materials Science Forum 1136 (December 13, 2024): 3–13. https://doi.org/10.4028/p-w5mivg.

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This paper discusses the fire and heat resistance of a polylactic acid/Hemp/Polypropylene hybrid laminated composite. Hybrid composites had their impacts analysed, specifically with regards to the fibre composition and stacking order. Using a hot press, the hybrid composites were created. In this work, Hemp/Polypropylene-reinforced polylactic hybrid composites with thermogravimetric, differential calorimetric, dynamic mechanical, and flamability properties were reported. Thermomechanical studies show that hybridization affects the laminate’s viscoelastic characteristics and thermal stability.

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Alexandridis, Athanasios, Apostolos Argyros, Pavlos Kyriazopoulos, et al. "Composite Magnetic Filaments: From Fabrication to Magnetic Hyperthermia Application." Micromachines 16, no. 3 (2025): 328. https://doi.org/10.3390/mi16030328.

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The printing of composite magnetic filaments using additive manufacturing techniques has emerged as a promising approach for biomedical applications, particularly in bone tissue engineering and magnetic hyperthermia treatments. This study focuses on the synthesis of nanocomposite ferromagnetic filaments and the fabrication of bone tissue scaffolds with time-dependent properties. Three classes of polylactic acid-based biocompatible polymers—EasyFil, Tough and Premium—were combined with magnetite nanoparticles (Fe3O4) at concentrations of 10 wt% and 20 wt%. Extruded filaments were evaluated for

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Chen, Kang, Xian Jun Li, Yi Qiang Wu, and Ying Feng Zuo. "Preparation and Properties of Straw Fiber/Polylactic Acid Composites." Materials Science Forum 1036 (June 29, 2021): 122–29. http://dx.doi.org/10.4028/www.scientific.net/msf.1036.122.

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Straw fiber (SF)/polylactic acid (PLA) composites were prepared from SF and PLA. The effects of the composite SF/PLA mass ratio investigated in terms of mechanical properties, water resistance, crystal structure, and thermal properties were investigated. These composites were characterized by scanning electron microscopic (SEM), X-ray diffractometric (XRD), differential scanning calorimetric (DSC), and thermogravimetric analyses (TGA). The results showed that, when the SF/PLA mass ratio was 3/7, the mechanical properties and water resistance of these composites were the best. When the mass rat

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Švarc, Tilen, Matej Zadravec, Žiga Jelen, Peter Majerič, Blaž Kamenik, and Rebeka Rudolf. "Study of Ni/Y2O3/Polylactic Acid Composite." Materials 16, no. 14 (2023): 5162. http://dx.doi.org/10.3390/ma16145162.

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This study demonstrates the successful synthesis of Ni/Y2O3 nanocomposite particles through the application of ultrasound-assisted precipitation using the ultrasonic spray pyrolysis technique. They were collected in a water suspension with polyvinylpyrrolidone (PVP) as the stabiliser. The presence of the Y2O3 core and Ni shell was confirmed with transmission electron microscopy (TEM) and with electron diffraction. The TEM observations revealed the formation of round particles with an average diameter of 466 nm, while the lattice parameter on the Ni particle’s surface was measured to be 0.343 n

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Chen, Jieng-Chiang, and Yi-Ting Lin. "Tension and compression of jute fabric/corrugated paper/reinforced polylactic acid resin sandwich composites." Modern Physics Letters B 33, no. 14n15 (2019): 1940003. http://dx.doi.org/10.1142/s0217984919400037.

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The tensile and compressive properties of jute fabric and corrugated paper (CP)-reinforced polylactic acid (PLA) resin sandwich composites are discussed. A core layer was fabricated with CP-reinforced PLA resin. The core later was then stacked with jute fabric and PLA films on the top and bottom surfaces to fabricate the sandwich composites. Two composites, a CP-reinforced PLA composite (CP/PLA composite) and a jute fabric/PLA sandwich composite with CP as a core layer (J/PLA/CP composite) were developed in this study. A dipping bath was developed for impregnating the paper with a molten PLA s

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Sujarwadi, Roni, and Tresna Priyana Soemardi. "Mechanical Characteristics Testing of Biodegradable Ramie Fiber Reinforced Polylactic Acid (PLA) Fabricated with Hot-Press Molding." Proceeding International Conference on Science and Engineering 3 (April 30, 2020): 301–6. http://dx.doi.org/10.14421/icse.v3.517.

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In this research, composite material was fabricated from both renewable resources and biodegradable materials: ramie woven fabric as reinforcement and 3D printed polylactic acid (PLA) filament as resin matrix. The laminate composites were produced using a film stacking method and processed using hot-press molding. The mechanical properties of woven ramie fabric, PLA matrix, and laminate composites were investigated. It is shown that the breaking force of the plain woven ramie fabric in the warp direction was greater than in the weft direction. Further, the tensile and impact properties of lami

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Prusek, Jan, Martin Boruvka, and Petr Lenfeld. "Natural Aerobic Degradation of Polylactic Acid (Composites) with Natural Fiber Additives." Materials Science Forum 919 (April 2018): 167–74. http://dx.doi.org/10.4028/www.scientific.net/msf.919.167.

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This paper deals with natural degradation of PLA (polylactic acid) composites with natural fiber reinforcement in non-simulated conditions. Composite material was made of PLA and 6 different types of biodegradable fibers. Fibers made from pulp, wool, bamboo, soya, flax and hemp. All samples had 20% volume of fibers. Three of each composite sample were placed in compost (aerobic surrounding) for 72 weeks. All samples were examined at the beginning every 2 weeks to observe if the degradation process occurred and all samples were examined at the end of 72 weeks period to observe results of degrad

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Korzh, Mykola O., Vasyl B. Makarov, Volodymyr I. Lipovsky, Dmytro V. Morozenko, and Svitlana I. Danylchenko. "MATHEMATICAL MODELING OF THE STRESS-STRAIN STATE OF THE “BONE-IMPLANT” SYSTEM DURING THE OSTEOSYNTHESIS WITH A PHILOS WITH POLYLACTIC ACID IMPLANTS." Wiadomości Lekarskie 73, no. 4 (2020): 722–27. http://dx.doi.org/10.36740/wlek202004118.

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The aim: To study was to use mathematical modeling in assessing the stress-strain state of the bone-implant system during plate osteosynthesis with a PHILOS plate of a proximal humerus fracture with polylactic acid implants. Materials and methods: Two bone-implant systems with a three-fragment humerus fracture according to the Neer classification (type 11-C1 according to the AO / ASIF classification) were selected for the study, one of which was with additional reinforcement of the head fragment with two polylactic acid implants (PLA – polylactide Ingeo™ Biopolymer 4032D). Sawbones (Europe AB,

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Jiang, Shui Qing. "Study on Properties of Polylactic Acid and Modified Calcium Carbonate Composite Materials." Applied Mechanics and Materials 775 (July 2015): 160–64. http://dx.doi.org/10.4028/www.scientific.net/amm.775.160.

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Based on the modified polylactic acid modified calcium carbonate, calcium carbonate in later polylactic acid blend will form a network structure in the composite material, effective to prevent the expansion of micro cracks, secondly, between the modified calcium carbonate will produce the corresponding yield, so that the modified calcium carbonate structure between plastic deformation, can impact absorbing energy, effective therefore, calcium carbonate particles exist, can effectively make the extension of small cracks in composite materials by passivation. Adding modified calcium carbonate co

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Liang, Yunhong, Chang Liu, Qian Zhao, Zhaohua Lin, Zhiwu Han, and Luquan Ren. "Bionic Design and 3D Printing of Continuous Carbon Fiber-Reinforced Polylactic Acid Composite with Barbicel Structure of Eagle-Owl Feather." Materials 14, no. 13 (2021): 3618. http://dx.doi.org/10.3390/ma14133618.

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Inspired by eagle-owl feather with characteristics of light weight and high strength, the bionic continuous carbon fiber-reinforced polylactic acid composite with barbicel structure was successfully 3D printed. Under the action of external load, angles between barbicels and rachis structure of eagle-owl feather decreased, which consumed a part of energy and built structure base of bionic feather structure model with a certain arrangement angle of continuous carbon fiber. Variation of bionic structure model design parameters significantly affected the mechanical properties of the 3D printing bi

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Naubnome, V., A. P. Bayuseno, F. A. Wicaksono, et al. "Assisted hydrothermal synthesis of green mussel shell-derived hydroxyapatite for use in filler polymer-based composites." Journal of Physics: Conference Series 2972, no. 1 (2025): 012053. https://doi.org/10.1088/1742-6596/2972/1/012053.

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Abstract Biodegradable bone implants based on bio-composite of polylactic acid and polycaprolactone biopolymers with hydroxyapatite are available and have significantly increased the usage of biomaterials in the medical industry. This study developed bio-composites of polylactic acid, polycaprolactone, and hydroxyapatite. The bio-composite made from a blend of 60% PCL and 40% PLA was with various quantities of hydroxyapatite, ranging from 5%, 10%, 15%, and 20% by weight. During the chemical blending procedure, chloroform was a solvent. The following evaluating tests included SEM, XRD, FTIR, mi

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Liu, Lingxiao, Maohai Lin, Zhang Xu, and Meiqi Lin. "Polylactic acid-based wood-plastic 3D printing composite and its properties." BioResources 14, no. 4 (2019): 8484–98. http://dx.doi.org/10.15376/biores.14.4.8484-8498.

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Wood-plastic composites for 3D printing from plant fiber (bleached pulp powder, mechanical pulp powder, newspaper pulp powder, eucalyptus powder, pine powder, and lignin) and polylactic acid (PLA), with silane coupling agent (KH550) as plasticizer, were prepared via melt extrusion. The physical properties, such as surface morphology, apparent density, tensile strength, melt flow rate, compatibility, and thermal stability were measured. Moreover, the effects of the content of various types of plant fiber powder in PLA on the properties of the prepared composites were investigated. The results s

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Fan, Qiqi, Guangping Han, Wanli Cheng, Huafeng Tian, Dong Wang, and Lihui Xuan. "Effect of Intercalation Structure of Organo-Modified Montmorillonite/Polylactic Acid on Wheat Straw Fiber/Polylactic Acid Composites." Polymers 10, no. 8 (2018): 896. http://dx.doi.org/10.3390/polym10080896.

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In this work, an easy way to prepare the polylactic acid (PLA)/wheat straw fiber (WSF) composite was proposed. The method involved uses either the dopamine-treated WSF or the two-step montmorillonite (MMT)-modified WSF as the filler material. In order to achieve the dispersibility and exfoliation of MMT, it was modified by 12-aminododecanoic acid using a two-step route. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were performed to characterize the modified MMT and the coated WSF. As for the properties of PLA/WSF composites, some thermal (using Fourier transform infrared spec

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Zhu, Junjie, Hui Sun, Biao Yang, and Yunxuan Weng. "Modified Biomass-Reinforced Polylactic Acid Composites." Materials 17, no. 2 (2024): 336. http://dx.doi.org/10.3390/ma17020336.

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Polylactic acid (PLA), as a renewable and biodegradable green polymer material, is hailed as one of the most promising biopolymers capable of replacing petroleum-derived polymers for industrial applications. Nevertheless, its limited toughness, thermal stability, and barrier properties have restricted its extensive application. To address these drawbacks in PLA, research efforts have primarily focused on enhancing its properties through copolymerization, blending, and plasticization. Notably, the blending of modified biomass with PLA is expected not only to effectively improve its deficiencies

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Kumar, Sudhir, Rupinder Singh, TP Singh, and Ajay Batish. "Investigations of polylactic acid reinforced composite feedstock filaments for multimaterial three-dimensional printing applications." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 233, no. 17 (2019): 5953–65. http://dx.doi.org/10.1177/0954406219861665.

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This paper reports properties of four different filaments prepared from (i) virgin polylactic acid, (ii) polylactic acid reinforced with polyvinyl chloride, (iii) polylactic acid reinforced with wood powder, and (iv) polylactic acid with reinforcement of Fe3O4 prepared with twin-screw extrusion for possible multimaterial three-dimensional printing. The results suggest that the melt flow rate of composite increases with the increase in reinforcements except for wood powder, which has shown a negative trend. Mechanical properties were also reduced with the loading but with the increase in the Fe

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Ciccarelli, Lucas, Frederik Cloppenburg, Sangeetha Ramaswamy, et al. "Sustainable composites: Processing of coir fibres and application in hybrid-fibre composites." Journal of Composite Materials 54, no. 15 (2019): 1947–60. http://dx.doi.org/10.1177/0021998319886108.

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Coir fibres, a byproduct of the coconut industry, have high performance qualities but are difficult to process by conventional textile methods. The purpose of the research is to combine the processibility of hemp and flax with the high-performance properties of coir to create a composite product worthy of industrial applications. The evaluation of coir fibre-reinforced composites focuses on the processibility of the coir fibre into a nonwoven, how well it interfaces with polylactic acid and an analysis of how the mechanical properties of the final product change when mixing coir with hemp and

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AIT - KACI, Abdelouahab, Manel HANNACHI, and Mustapha NECHICHE. "Development and Characterization of a Biodegradable Composite Based on PLA Matrix and Date Kernels Powder." Eurasia Proceedings of Science Technology Engineering and Mathematics 32 (December 30, 2024): 417–25. https://doi.org/10.55549/epstem.1604689.

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In the present study, a biodegradable composite material based on polylactic acid (PLA) and date kernels (DK) is developed by hot pressing. In first, all the raw materials were processed into powders. Then, PLA-50% date kernels (DK) (% vol.) mixtures were hot-pressed at 180°C under 10 MPa pressure during 5 minutes. Microstructural characterization of the obtained composites was performed using Scanning electron microscopy (SEM), Fourier Transform InfraRed spectroscopy (FTIR), and Differential Scanning Calorimetry (DSC) analyzes. The mechanical behavior was evaluated through tribological tests

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King, Francis L., A. Arul Jeya Kumar, and Srinivasan Vijayaragahavan. "Mechanical characterization of polylactic acid reinforced bagasse/basalt hybrid fiber composites." Journal of Composite Materials 53, no. 1 (2018): 33–43. http://dx.doi.org/10.1177/0021998318780208.

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This paper focuses on the mechanical behavior of Polylatic acid reinforced Basalt and Bagasse fibers. The most important aspect in formulating this hybrid composite with better mechanical properties is the optimization of interfacial bonding between the reinforcing bagasse fiber and basalt fiber and polymer matrix. The composite of different weight proportion of the materials is compounded using twin screw extruder. The specimens were prepared by injection molding and subjected to various mechanical testing under tensile, flexural, and impact loads. It was found that 84 wt% of polylactic acid,

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Zhang, Jun, Zude Zhou, Fan Zhang, Yuegang Tan, and Renhui Yi. "Molding process and properties of continuous carbon fiber three-dimensional printing." Advances in Mechanical Engineering 11, no. 3 (2019): 168781401983569. http://dx.doi.org/10.1177/1687814019835698.

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Currently, carbon fiber composite has been applied in the field of three-dimensional printing to produce the high-performance parts with complex geometric features. This technique comprise both the advantages of three-dimensional printing and the material, which are light weight, high strength, integrated molding, and without mold, and the limitation of model complexity. In order to improve the performance of three-dimensional printing process using carbon fiber composite, in this article, a novel molding process of three-dimensional printing for continuous carbon fiber composites is developed

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Oksiuta, Zbigniew, Marek Jalbrzykowski, Joanna Mystkowska, Eliza Romanczuk, and Tomasz Osiecki. "Mechanical and Thermal Properties of Polylactide (PLA) Composites Modified with Mg, Fe, and Polyethylene (PE) Additives." Polymers 12, no. 12 (2020): 2939. http://dx.doi.org/10.3390/polym12122939.

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In this article, polylactic acid-based composites reinforced with 5% of polyethylene, iron, and magnesium powders were prepared by extrusion and compressed under the pressure of about 10 MPa and characterized. These composites were mechanically, thermally, and morphologically evaluated. It was found, compared to the pure polylactic acid (PLA), an improvement in tensile strength (both σ and YS0.2) was obtained for the composite with the iron powder addition, while the magnesium powder slightly improved the ductility of the composite material (from 2.0 to 2.5%). Degradation studies of these comp

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Martikka, Ossi, Timo Kärki, and Qing Ling Wu. "Mechanical Properties of 3D-Printed Wood-Plastic Composites." Key Engineering Materials 777 (August 2018): 499–507. http://dx.doi.org/10.4028/www.scientific.net/kem.777.499.

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3D printing has rapidly become popular in both industry and private use. Especially fused deposition modeling has increased its popularity due to its relatively low cost. The purpose of this study is to increase knowledge in the mechanical properties of parts made of wood-plastic composite materials by using 3D printing. The tensile properties and impact strength of two 3D-printed commercial wood-plastic composite materials are studied and compared to those made of pure polylactic acid. Relative to weight –mechanical properties and the effect of the amount of fill on the properties are also de

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Lu, Jianxiao, Chuanyue Sun, Kexin Yang, et al. "Properties of Polylactic Acid Reinforced by Hydroxyapatite Modified Nanocellulose." Polymers 11, no. 6 (2019): 1009. http://dx.doi.org/10.3390/polym11061009.

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Polylactic acid (PLA) is one of the most promising bio-based materials, but its inherent hydrophobicity limits its application. Although nanocellulose (NCC) is a desirable reinforcement for PLA, the poor interface compatibility between the two has been a challenge. In this work, hydroxyapatite (HAP) modified NCC was prepared, and the obtained NCC/HAP reinforcement was used to prepare PLA/NCC-HAP composites. Different ratios of NCC to HAP were studied to explore their effects on the mechanical and thermodynamic properties of the composites. When the ratio of NCC to HAP was 30/70, the tensile st

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Zhang, Xiaobo. "Preparation and Properties of Polylactic Acid/Modified Starch/POE Degradation Materials." MATEC Web of Conferences 238 (2018): 04009. http://dx.doi.org/10.1051/matecconf/201823804009.

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Polylactic acid (PLA) / polyolefin elastomer (POE) / modified starch composites were prepared by melt blending. The composites were characterized by softening point, polarizing microscope, melt flow rate, tensile strength and degradation properties. The results showed that with the increase of modified starch and POE content, phase separation occurred between modified starch and PLA, and the tensile strength decreased compared with pure PLA. Modified starch could increase the crystallinity of PLA to increase the softening point and improve the thermal stability of PLA. When the modified starch

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Yin, Hai Rong, Quan Xian Zu, and Yang Wu. "Preparation and Characterization of Polylactic Acid Fiber Enhanced Hydroxyapatite/Chitosan Composites." Advanced Materials Research 368-373 (October 2011): 321–25. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.321.

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A novel hydroxyapatite/chitosan composite plate enhanced by polylactic acid fiber is prepared via in–situ hybridization in the semipermeable mold. The influence factors of the composites are evaluated by orthogonal test; FT–IR, XRD and SEM are also used to determine the relevance between the composition and performance. Analyses show that: hydroxyapatite with weak crystalline state is generated in the composites; there is hydrogen bonding associating existing in the complex system; preferable interface junction is created between the fiber and hydroxyapatite /chitosan matrix, which is able to

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Muthu Natarajan, S., S. Senthil, and P. Narayanasamy. "Investigation of Mechanical Properties of FDM-Processed Acacia concinna–Filled Polylactic Acid Filament." International Journal of Polymer Science 2022 (September 12, 2022): 1–8. http://dx.doi.org/10.1155/2022/4761481.

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In this work, an Acacia concinna filler was blended in a polylactic acid matrix using a single-screw extruder. A composite filament material made from an extruder was used to fabricate polylactic acid/25 wt% A. concinna (PLA/25 wt% AC) composites via a fused deposition modeling (FDM) technique. Composites were fabricated by varying layer thickness, infill density, and printing speed based on Taguchi L9 experimental design. Tensile, flexural, and impact tests were conducted on the printed composite samples as per the ASTM standards. The significance of factors impacting the mechanical propertie

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Zhao, Yang, Qinpeng Shen, Yuanxin Duan, et al. "Wood fiber-reinforced polylactic acid sheets enabled by papermaking." BioResources 16, no. 4 (2021): 8258–72. http://dx.doi.org/10.15376/biores.16.4.8258-8272.

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Polylactic acid is a biodegradable thermoplastic polyester derived from renewable polysaccharides. In this work, softwood fibers were used to reinforce the paper sheet made from polylactic acid fibers, thus addressing the challenges regarding low density, rough surface, and weak strength. The impact of wood fibers and calendering on the physical properties (density, roughness, tensile strength, and folding endurance) of the composite paper were identified. Furthermore, the morphology of papers with different fiber contents and those that had been calendered was characterized with a scanning el

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Zhong, Yanhui, Yanfang Chen, and Qingfen Geng. "Research on modification of polylactic acid multifunctional composite materials for 3d printing." Journal of Physics: Conference Series 2713, no. 1 (2024): 012017. http://dx.doi.org/10.1088/1742-6596/2713/1/012017.

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Abstract Polylactic acid is an important 3D printing material, but its further development and application in the field of 3D printing are limited due to its flammability, poor toughness, and lack of high temperature resistance. This article modifies polylactic acid wire for 3D printing by adding flame retardants aluminum hypophosphate, polycarbonate, and chain extender to prepare multifunctional composite flame retardant materials. It was found that with the increase of aluminum hypophosphate addition, the flame retardancy of polylactic acid composite materials gradually improved, while the t

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