Relevant bibliographies by topics / Biodegradable polymeric films

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'Biodegradable polymeric films'

Author: Grafiati
Published: 5 June 2025
Last updated: 15 July 2025

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Journal articles on the topic "Biodegradable polymeric films"

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Bhardwaj, Nikita, Mohd Tashfeen Ashraf, and Jaya Maitra. "Heavy metal ion uptake using biodegradable polymeric film." Brazilian Journal of Development 10, no. 1 (2024): 965–77. http://dx.doi.org/10.34117/bjdv10n1-063.

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This study investigates the potential of gelatin films as a biodegradable material for food preservation and heavy metal ion removal. Gelatin, a biodegradable protein derived from animal collagen, was dissolved in distilled water to form a solution and casted to form films. The films were evaluated for their swelling behavior, solubility in food, moisture content, thickness, and biodegradability. The results showed that gelatin films were completely soluble in water within 3 hours, with a water solubility of 29 ± 1.6%. The films showed UV-visible light absorbance ranging from 280 to 480 nm wit
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Lebedev, Vladimir, Denis Miroshnichenko, and Tetiana Tykhomyrova. "Study of lignite humic acids hybrid modification technology of biodegradable films based on polyvinyl alcohol." Technology audit and production reserves 2, no. 3(70) (2023): 10–13. http://dx.doi.org/10.15587/2706-5448.2023.277980.

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Object of article study is lignite humic acids hybrid modification technology of biodegradable films based on polyvinyl alcohol. The possibility of increasing the strength and operational properties of biodegradable polymeric materials based on polyvinyl alcohol by using its modification with the different types of humic acids from lignite is considered. Lignite humic acids hybrid modification films with antibacterial properties were obtained. The two-stage technology of lignite humic acids hybrid modification of biodegradable films based on polyvinyl alcohol was formalized. At the first stage
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Lebedev, Volodymyr, Denis Miroshnichenko, Serhiy Pyshyev, and Ananiy Kohut. "Study of Hybrid Humic Acids Modification of Environmentally Safe Biodegradable Films Based on Hydroxypropyl Methyl Cellulose." Chemistry & Chemical Technology 17, no. 2 (2023): 357–64. http://dx.doi.org/10.23939/chcht17.02.357.

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The possibility of increasing the strength and operational properties of ecologically safe biodegradable polymeric materials based on hydroxypropyl methyl cellulose by using its modification with the different types of humic acids (HAs) from lignite is considered. Hybrid ecologically safe high-strength films with antibacterial properties were obtained for the first time. Physicochemical studies and IR spectroscopy confirmed the development of hybrid structures of hydroxypropyl methyl cellulose, modified with the different types of HAs. Changes in water absorption, tensile strength, relative el
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Timofiychuk, O. A., T. I. Prudnicova, D. O. Mishurov, V. L. Avramenko, and R. G. Shevcova. "Decomposition of biodegradable films developed on the basis of polyvinyl alcohol in the natural environment." Facta universitatis - series: Physics, Chemistry and Technology 7, no. 1 (2009): 61–67. http://dx.doi.org/10.2298/fupct0901061t.

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The use of polymeric pack has made for many important problems. Biodegradable plastics may provide solutions to global environmental problems. The aim of this study is to examine the utilization possibilities in natural environment of biodegradable films, which was developed with polyvinyl alcohol and organic filler materials (amylum and cellulose). The films stability against the filamentous fungus was analyzed, the soil type with optimal conditions to the biodegradation of polymers was determined; the mold fungi were separated from biodegradable films and were identified to a genus.
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Vladimir, Lebedev, Miroshnichenko Denis, and Tykhomyrova Tetiana. "Study of lignite humic acids hybrid modification technology of biodegradable films based on polyvinyl alcohol." Technology audit and production reserves 2, no. 3(70) (2023): 10–13. https://doi.org/10.15587/2706-5448.2023.277980.

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<em>Object of article study is lignite humic acids hybrid modification technology of biodegradable films based on polyvinyl alcohol. The possibility of increasing the strength and operational properties of biodegradable polymeric materials based on polyvinyl alcohol by using its modification with the different types of humic acids from lignite is considered. Lignite humic acids hybrid modification films with antibacterial properties were obtained. The two-stage technology of lignite humic acids hybrid modification of biodegradable films based on polyvinyl alcohol was formalized. At the first s
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Arkadyi, Petukhov, Shnyruk Oleg, Mikulionok Ihor, Gavva Oleksandr, and Kryvoplias-Volodina Liudmyla. "Design of a composition based on polyethylene and marble microparticles that decomposes under the effect of ultraviolet radiation." Eastern-European Journal of Enterprise Technologies 6, no. 6(108) (2020): 102–10. https://doi.org/10.15587/1729-4061.2020.216835.

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Among the issues related to the disposal of polymers&#39; waste is the design of cheap biodegradable polymeric materials, which are destroyed as a result of natural microbiological and chemical processes. Since the synthesis of biodegradable polymers is characterized by high material and energy costs, the filled biodegradable polymeric materials are more promising. This paper substantiates the feasibility of using marble microparticles as a filler for the biodegradable polymeric material based on high-pressure polyethylene whose decomposition rate increases under the conditions of ultraviolet
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Alves, Layla Talita de Oliveira, Pãmella Fronza, Idalina Gonçalves, Washington Azevêdo da Silva, Leandro S. Oliveira, and Adriana S. Franca. "Development of Polymeric Films Based on Sunflower Seed Proteins and Locust Bean Gum." Polymers 16, no. 13 (2024): 1905. http://dx.doi.org/10.3390/polym16131905.

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Most polymeric food packaging materials are non-biodegradable and derived from petroleum, thus recent studies have focused on evaluating alternative biodegradable materials from renewable sources, with polysaccharides and proteins as the main types of employed biopolymers. Therefore, this study aimed to develop biopolymeric films based on sunflower proteins and galactomannans from locust bean gum. The influence of the galactomannan amount (0.10%, 0.30%, 0.50%, and 0.75% w/v) on the physicochemical, thermal, and mechanical properties of cast sunflower protein-based films was studied. Sunflower
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Nasreen, Zinia, Mubarak A. Khan, and A. I. Mustafa. "Improved Biodegradable Radiation Cured Polymeric Film Prepared from Chitosan-Gelatin Blend." Journal of Applied Chemistry 2016 (February 22, 2016): 1–11. http://dx.doi.org/10.1155/2016/5373670.

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The mechanical, thermal, swelling, and release properties of chitosan-gelatin (CG) films have been investigated in order to verify the influence of UV and gamma radiation on the stability of the films. Thin films of chitosan and gelatin (1 : 3, w/w) that were radiated with 100 krad of gamma dose showed the best performance and the TS values reached 25, 45, and 49 MPa, respectively, for chitosan, gelatin, and blend. The corresponding highest TS values were 23, 42, and 45 MPa, respectively, for 10 passes of UV radiation. The effect of radiation over gelatin, chitosan, and CG blend caused modific
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Viveka, R., and E. Nakkeeran. "Development and characterization of a novel biodegradable laboratory-made pullulan blended films." Journal of Environmental Biology 43, no. 6 (2022): 755–63. http://dx.doi.org/10.22438/jeb/43/6/mrn-5006.

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Aim: To develop and characterize laboratory-made pullulan blended film using pullulan obtained from yeast-like fungus Aureobasidium pullulans mixed with gelatin and sodium alginate. Methodology: The laboratory-made pullulan blended (LPB) and standard pullulan blend (SPB) films were prepared by the solution casting method. Physical and mechanical properties were performed to examine the moisture content, film thickness, film solubility, tensile strength and elongation at break. Fourier transform infrared spectroscopy, X-ray diffraction, and field emission scanning electron microscope techniques
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Scaffaro, Roberto, Andrea Maio, Fiorenza Sutera, Emmanuel Gulino, and Marco Morreale. "Degradation and Recycling of Films Based on Biodegradable Polymers: A Short Review." Polymers 11, no. 4 (2019): 651. http://dx.doi.org/10.3390/polym11040651.

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The environmental performance of biodegradable materials has attracted attention from the academic and the industrial research over the recent years. Currently, degradation behavior and possible recyclability features, as well as actual recycling paths of such systems, are crucial to give them both durability and eco-sustainability. This paper presents a review of the degradation behaviour of biodegradable polymers and related composites, with particular concern for multi-layer films. The processing of biodegradable polymeric films and the manufacturing and properties of multilayer films based
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Dissertations / Theses on the topic "Biodegradable polymeric films"

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Fromageot, Camille. "Modification of biodegradable polymer films." Thesis, Queensland University of Technology, 2019. https://eprints.qut.edu.au/131622/1/Camille_Fromageot_Thesis.pdf.

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This project aimed at tuning the photodegradability of a biodegradable polyester by employing a photosensitizing molecule, 2-oxepane-1,5-dione (OPD), as an additive mixed with commercial polymer and as a monomer to be copolymerized. Various processing techniques were employed, such as reactive extrusion, film blending or synthesis of polymers. The accelerated artificial ageing of modified polyesters revealed that OPD accelerated the rate of photodegradation of the polyester, with the differing mechanisms of degradation found for blends and copolymers providing scope for tuning the photodegrada
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Ambardekar, Rohan. "Controlled drug release from oriented biodegradable polymers." Thesis, University of Bradford, 2015. http://hdl.handle.net/10454/14867.

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This research is the first systematic investigation of solid-state orientation as a novel method for controlling drug release from biodegradable polymers. The effect of various degrees of polymer orientation was studied in oriented Poly (L-lactic acid) (PLA) films containing curcumin and theophylline as model drugs. Additionally, direction specific drug release was studied from oriented PLA rods containing paracetamol. The films oriented to 2X uniaxial constant width (UCW) or 2X2Y biaxial draw ratio showed retardation of drug release, when their nematic structure was stabilised by the presence
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Sullivan, Erin M. "Understanding the process-structure-property relationship in biodegradable polymer nanocomposite films." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54428.

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The focus of this study was to explore process-structure-property relationships in biodegradable polymer nanocomposite films in order to eliminate the commonly used trial and error approach to materials design and to enable manufacturing of composites with tailored properties for targeted applications. The nanofiller type and concentration, manufacturing method and compounding technique, as well as processing conditions were systematically altered in order to study the process-structure-property relationships. Polylactic acid (PLA) was used as the polymer and exfoliated graphite nanoplatelets
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Saranti, Tascila Ferreira da Silva. "Desenvolvimento de novos filmes comestíveis de gelatina contendo nanoemulsão de óleo essencial de pimenta preta ou manjerona reforçados com cloisite Na+ /." Ilha Solteira, 2019. http://hdl.handle.net/11449/182375.

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Orientador: Márcia Regina de Moura Aouada<br>Resumo: A crescente preocupação em se consumir produtos que sejam ecologicamente corretos tem motivado pesquisas no desenvolvimento de novos materiais. Nesse sentido, filmes à base de polímeros naturais têm sido desenvolvidos com o objetivo de substituir parcialmente a utilização dos polímeros tradicionais. A utilização desses filmes, além de diminuir a geração de resíduos plásticos descartados no meio ambiente, podem ainda exercer a função de embalagem ativa, estendendo a vida útil dos alimentos. O presente trabalho consiste na elaboração de novos
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van, Aardt Marleen. "Controlled Release of Antioxidants via Biodegradable Polymer Films into Milk and Dry Milk Products." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/11069.

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Residual value is defined as the price for which a used piece of equipment can be sold in the market at a particular time. It is an important element of the owning costs of equipment and needs to be estimated by equipment managers for making investment decisions. The purpose of this study is to gain insights into the residual value of selected groups of heavy construction equipment and to develop a mathematical model for its prediction. Auction sales data were collected from two online databases. Manufacturer publications and an online source provided size parameters and manufacturers suggeste
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Cano, Embuena Amalia Isabel. "Different strategies to improve the functionality of biodegradable films based on starch and other polymers." Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/55383.

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[EN] In the present Doctoral Thesis, different strategies to improve functional properties of starch films for food packaging applications were analysed: study of the effect of amylose:amylopectin ratio, blend with other polymers poly(vinyl alcohol) (PVA), and incorporation of different fillers (rice bran and cellulose nanocrystals-CNCs) and antimicrobial agents (neem oil-N, oregano essential oil-O and silver nanoparticles-AgNPs). Likewise, a biodegradation study of the films as affected by antimicrobials was carried out. Among different starches with distinct amylose:amylopectin ratio, pea s
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Kenar, Halime. "In Vitro Bone Tissue Engineering On Patterned Biodegradable Polyester Blends." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/4/1082865/index.pdf.

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This study aimed at guiding osteoblast cells on biodegradable polymer carriers with well-defined surface microtopography and chemistry, and investigating the effect of cell alignment on osteoblast phenotype expression. A blend of two different polyesters, one being natural in origin (PHBV) and the other synthetic (P(L/DL)LA), was used to form a film with parallel macro- (250 &micro<br>m wide) or microgrooves (27 &micro<br>m wide) on its surface, by solvent casting on patterned templates. The micropatterned Si template was produced by photolithography, while the Teflo macropatterned template wa
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Gilfillan, William N. "Developing starch-based polymer composites." Thesis, Queensland University of Technology, 2015. https://eprints.qut.edu.au/86612/6/William_Gilfillan_Thesis.pdf.

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This project aim was to replace petroleum-based plastic packaging materials that pollute the environment, with biodegradable starch-based polymer composites. It was demonstrated that untreated sugar cane bagasse microfibres and unbleached nanofibres significantly improved the physical, mechanical and chemical properties of starch films, while thermal extrusion of starch with alcohol improved the stiffness and the addition of aconitic acid cross-linked the film making it moisture resistant and extensible.
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Syed, Samira. "The Development Of Bio-Composite Films From Orange Waste : A Methodological And Evaluation Study Of Material Properties." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-25523.

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Bioplastic research has become more diverse and different types of research on bioplastic production have been conducted from fruits and vegetable waste, for example, orange waste. The wastes that come from oranges contain more than just vitamins, it has soluble sugars, starch, hemicellulose, cellulose, and pectin. The intention of this project was to study the possibility to produce bio-composite films from orange waste, after removing the soluble sugars. It was also to analyze the properties of the material by tensile strength, visual observation, and to find a methodology that suits this st
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Pillai, Jonathan Devasitham. "Biodegradable Polymer Constructs for Disease-specific, Localized and Sustained Drug Delivery of a Novel Synthetic Curcumin Analog." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1217548715.

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Book chapters on the topic "Biodegradable polymeric films"

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Córdova-Cisneros, Karla C., Paola F. Vera-García, Karina G. Espinosa-Cavazos, Omar A. Martínez-Anguiano, Aidé Sáenz-Galindo, and Adali O. Castañeda-Facio. "Films." In Biodegradable Polymers. CRC Press, 2023. http://dx.doi.org/10.1201/9781003230533-8.

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Mayer, Jean M. "Degradation Kinetics of Polymer Films in Marine and Soil Systems under Accelerated Conditions." In Novel Biodegradable Microbial Polymers. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-2129-0_49.

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Marchessault, R. H., C. J. Monasterios, and P. Lepoutre. "Properties of Poly-β-Hydroxyalkanoate Latex: Nascent Morphology, Film Formation and Surface Chemistry." In Novel Biodegradable Microbial Polymers. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-2129-0_9.

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Faraji, Babak, Neda Aliabbasi, Zahra Emam-Djomeh, Maryam Salami, and Gholamreza Askari. "Application of Biopolymer Blends as Edible Films and Coatings in Food Packaging." In Biodegradable Polymer-Based Food Packaging. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-5743-7_14.

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Dixit, Shobhit, and Vijay Laxmi Yadav. "Biodegradable Polymer Composite Films for Green Packaging Applications." In Handbook of Nanomaterials and Nanocomposites for Energy and Environmental Applications. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-36268-3_157.

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Dixit, Shobhit, and Vijay Laxmi Yadav. "Biodegradable Polymer Composite Films for Green Packaging Applications." In Handbook of Nanomaterials and Nanocomposites for Energy and Environmental Applications. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-11155-7_157-1.

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Hayes, Douglas G., Marife B. Anunciado, Jennifer M. DeBruyn, et al. "Biodegradable Plastic Mulch Films for Sustainable Specialty Crop Production." In Polymers for Agri-Food Applications. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-19416-1_11.

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Schwarzwälder, Bea, René Estermann, and Luigi Marini. "The Role Of Life-Cycle-Assessment For Biodegradable Products: Bags And Loose Fills." In Biorelated Polymers. Springer US, 2001. http://dx.doi.org/10.1007/978-1-4757-3374-7_33.

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Abdul Khalil, H. P. S., Ying Ying Tye, Cheu Peng Leh, et al. "Cellulose Reinforced Biodegradable Polymer Composite Film for Packaging Applications." In Bionanocomposites for Packaging Applications. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-67319-6_3.

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Tsui, Amy, Xiao Hu, David L. Kaplan, and Curtis W. Frank. "Biodegradable Films and Foam of Poly(3-Hydroxybutyrate-co-3-hydroxyvalerate) Blended with Silk Fibroin." In Green Polymer Chemistry: Biocatalysis and Materials II. American Chemical Society, 2013. http://dx.doi.org/10.1021/bk-2013-1144.ch018.

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Conference papers on the topic "Biodegradable polymeric films"

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AL-QASSIMI, MASUMAH, HAJAR JAWAD KARAM, MAJED HAMEED AL-WADI, and SULTAN MAJED AL-SALEM. "COMPOUNDING AND PROCESSING HYDRO-BIODEGRADABLE PLASTIC FILMS FOR PLASTIC WASTE REDUCTION. PART II: THERMAL AND CHEMICAL PRINTING OF VIRGIN/WASTE POLYMERIC BLENDS." In WASTE MANAGEMENT 2020. WIT Press, 2020. http://dx.doi.org/10.2495/wm200101.

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Yeo, Leslie Y., and James R. Friend. "Surface Acoustic Waves: A New Paradigm for Driving Ultrafast Biomicrofluidics." In ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer. ASMEDC, 2009. http://dx.doi.org/10.1115/mnhmt2009-18517.

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Surface acoustic waves (SAWs), which are 10 MHz order surface waves roughly 10 nm in amplitude propagating on the surface of a piezoelectric substrate, can offer a powerful method for driving fast microfluidic actuation and microparticle or biomolecule manipulation. We demonstrate that sessile drops can be linearly translated on planar substrates or fluid can be pumped through microchannels at typically one to two orders of magnitude faster than that achievable through current microfluidic technologies. Micromixing can be induced in the same microchannel in which fluid is pumped using the SAW
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Kuzmin, A. M. "Investigation of the Orientational Mechanical Properties of Biodegradable Extrusion Films Based on Polyolefins and Beet Pulp." In Modern Trends in Manufacturing Technologies and Equipment. Materials Research Forum LLC, 2022. http://dx.doi.org/10.21741/9781644901755-26.

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Abstract. The article discusses the possibility of obtaining biodegradable films based on polyolefins and beet pulp by the extrusion method. Biodegradable composites of two mixes with 15% and 25% beet pulp content have been obtained. Compounding was carried out on a twin-screw extruder, and then samples of biodegradable films were obtained by cast film extrusion. The influence of the vegetable filler particles’ orientation on the composites mechanical properties has been studied. It has been shown that composites mechanical properties significantly increase in the direction of polymer melt str
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Garg, Nitin, Richard Tran, Jian Yang, and Hyejin Moon. "Controlled Cellular Growth by Superhydrophobic Microstructured Surfaces of Implantable Biodegradable Polymer Substrate." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-206561.

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Biodegradable polymers with elastomeric properties have recently received attention for their potential use in the engineering of soft tissues such as blood vessel, heart valves, cartilage, tendon, and bladder, which exhibit elastic properties [1, 2]. In this paper, microfabrication technology has been applied successfully to biodegradable polymer films to encourage cell growth in designated area. This work is presented with the final goal of fabricating implantable polymer scaffolds to produce blood capillaries in controlled manner spatially by using the concept of superhydrophobic surfaces.
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Ceraulo, M., M. C. Mistretta, F. P. La Mantia, and L. Botta. "Rheological behaviour, filmability and mechanical properties of biodegradable polymer films." In TIMES OF POLYMERS (TOP) AND COMPOSITES 2014: Proceedings of the 7th International Conference on Times of Polymers (TOP) and Composites. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4876890.

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Scarfato, P., E. Avallone, D. Acierno, and P. Russo. "Optical and mechanical properties of UV-weathered biodegradable PHBV/PBAT nanocomposite films containing halloysite nanotubes." In TIMES OF POLYMERS (TOP) AND COMPOSITES 2014: Proceedings of the 7th International Conference on Times of Polymers (TOP) and Composites. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4876862.

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Sorg, Brian S., and Ashley J. Welch. "Tissue soldering with biodegradable polymer films: preliminary in-vivo compatibility test." In International Symposium on Biomedical Optics, edited by Kenneth E. Bartels, Lawrence S. Bass, Werner T. de Riese, et al. SPIE, 2002. http://dx.doi.org/10.1117/12.430664.

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Vukić, Nevena, Tamara Erceg, and Miroslav Hadnađev. "The investigation of edible packaging films based on pullulan and alginate." In 11th International Symposium on Graphic Engineering and Design. University of Novi Sad, Faculty of technical sciences, Department of graphic engineering and design, 2022. http://dx.doi.org/10.24867/grid-2022-p48.

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The packaging industry is highly dependent on fossil resources and have serious environmental drawbacks. The largest part of the total volume of plastic waste is generated from food packaging, so new packaging strategies with green materials are required. Using the edible packaging films which are renewable, biodegradable and versatile, can reduce the amount of plastic waste. Also, there is an increasing demand of higher quality foods and a growing interest from consumers for minimally processed fresh-like foods with an extended shelf life. Edible films can be effective barriers which prevent
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Di Maio, L., P. Scarfato, E. Avallone, M. R. Galdi, and L. Incarnato. "Preparation and characterization of biodegradable active PLA film for food packaging." In PROCEEDINGS OF PPS-29: The 29th International Conference of the Polymer Processing Society - Conference Papers. American Institute of Physics, 2014. http://dx.doi.org/10.1063/1.4873795.

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Usachev, Ivan. "USAGE OF THERMOPLASTIC STARCH AND ULTRASOUND IN DEVELOPMENT OF BIODEGRADABLE POLYMER FILM." In 18th International Multidisciplinary Scientific GeoConference SGEM2018. Stef92 Technology, 2018. http://dx.doi.org/10.5593/sgem2018/5.2/s20.131.

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Reports on the topic "Biodegradable polymeric films"

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Hilhorst, Marieke, Sara Caliari, Wouter Post, Lambertus J. Kuijpers, and Fresia Alvarado Chacon. Thin films from modified Poly(glycolic acid) with excellent water vapor barrier. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.gs.farp.1.

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Commercial biodegradable polymers that combine high oxygen and water vapor barrier properties are scarce. In the packaging industry multilayer materials are usually used to achieve the barrier requirements, however they are usually not recyclable and will not biodegrade when discarded. The outstanding barrier properties of poly(glycolic acid) (PGA) make it an excellent candidate for a biodegradable oxygen and water vapor barrier packaging material. At the same time, its processability into films using standard converting equipment is a major challenge. Low melt strength, high processing temper
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Vargas Rojas, Manuela, Felipe Salcedo Galán, and Jorge Medina Perilla. Processability study of thermoplastic starch/poly(Butylene Succinate Adipate) blends in a reactive extrusion. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.ss.bbb.3.

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Growing concerns about ocean contamination from fossil fuel based polymers have created a demand for biodegradable alternatives, particularly for packaging applications. Thermoplastic starch (TPS) is a promising, eco-friendly biopolymer but has poor mechanical properties and high hydrophilicity. To address these issues, this article explores modifying starches through reactive extrusion and blending them with other biodegradable polymers. The study evaluates blends of native or acetylated starch with poly(butylene succinate) adipate (PBSA), using glycerol as a plasticizer and tartaric acid as
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Garcia Aramendiz, Johan Sebastián, Leonardo Forero Varela, and Jorge Alberto Medina Perilla. Evaluation of the effect of cellulose nanofibers in thermoplastic starch films. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.ss.bbb.9.

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Thermoplastic starches (TPS) are important bio-based, biodegradable polymers used in flexible packaging. However, their mechanical properties, processability, and high hydrophilicity limit their applications. This study examines the effects of chemical modifications and mechanical reinforcements on TPS matrices. Combinations of native and acetylated TPS, reinforced with native (CNF) and acetylated cellulose nanofibers (CNFA) at 1%, 2%, 3%, and 10%, were analyzed. TPS films were prepared with CNF using compression molding, followed by structural, morphological, mechanical, and hygroscopic analy
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López-Galindo, Angie, Manuela Vargas-Rojas, and Jorge Medina-Perilla. Evaluation of Dicumyl Peroxide as a Coupling Agent in Thermoplastic Starch and BioPBS Composites. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.ss.bbb.8.

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To address plastic pollution from fossil fuel polymers, biodegradable alternatives like starch and polybutylene succinate (PBS) are proposed. However, starch is hydrophilic, while PBS and PBSA are hydrophobic. This research investigates the use of dicumyl peroxide (DCP) and tartaric acid (TA) as coupling agents in blends of thermoplastic starch (TPS) and PBS/PBSA, with glycerol as a plasticizer. Different weight/weight compositions of DCP and TA were added to blends in an internal mixer and subsequently compressed molded into films. DCP enhances tensile strength and ductility but increases tor
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Petrausch, Julius, Daniel Klein, Johannes Zimmer, and Markus Stommel. On the cryo-molding process and subsequent forming processes of biopolymers with low glass transition temperature. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.ss.bbb.10.

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Bio-based as well as biodegradable polymers are increasingly finding their way into applications such as food packaging. Here, certain biopolymers with a high degree of crystallinity may be of interest due to their superior barrier properties. Conversely, forming processes including high deformations often require an almost amorphous material state to avoid the brittle behavior associated with crystal structures. For some of those biopolymers, the narrow window in which they can be processed has delayed their potential use for packaging applications. In rigid packaging, two-step processes are
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