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Journal articles on the topic 'Polyester'

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1

REHM, Bernd H. A. "Polyester synthases: natural catalysts for plastics." Biochemical Journal 376, no. 1 (2003): 15–33. http://dx.doi.org/10.1042/bj20031254.

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Polyhydroxyalkanoates (PHAs) are biopolyesters composed of hydroxy fatty acids, which represent a complex class of storage polyesters. They are synthesized by a wide range of different Gram-positive and Gram-negative bacteria, as well as by some Archaea, and are deposited as insoluble cytoplasmic inclusions. Polyester synthases are the key enzymes of polyester biosynthesis and catalyse the conversion of (R)-hydroxyacyl-CoA thioesters to polyesters with the concomitant release of CoA. These soluble enzymes turn into amphipathic enzymes upon covalent catalysis of polyester-chain formation. A sel
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2

Motlatle, Abesach M., Suprakas Sinha Ray, Vincent Ojijo, and Manfred R. Scriba. "Polyester-Based Coatings for Corrosion Protection." Polymers 14, no. 16 (2022): 3413. http://dx.doi.org/10.3390/polym14163413.

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The article is the first review encompassing the study and the applications of polyester-based coatings for the corrosion protection of steel. The impact of corrosion and the challenges encountered thus far and the solutions encountered in industry are addressed. Then, the use of polyesters as a promising alternative to current methods, such as phosphating, chromating, galvanization, and inhibitors, are highlighted. The classifications of polyesters and the network structure determine the overall applications and performance of the polymer. The review provides new trends in green chemistry and
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3

Lee, Hee Young, Heidy Cruz, and Younggon Son. "Effects of incorporation of polyester on the electrical resistivity of polycarbonate/multi-walled carbon nanotube nanocomposite." Journal of Composite Materials 53, no. 10 (2018): 1291–98. http://dx.doi.org/10.1177/0021998318801932.

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In this work, we present the effect of incorporation of polyester on the electrical properties of injection-molded polycarbonate/multi-walled carbon nanotube nanocomposites. The study was conducted by melt-mixing polycarbonate, multi-walled carbon nanotube, and three types of polyesters: polybutylene terephthalate, polyethylene terephthalate, and liquid crystal polymer. It was found that the volume resistivities of injection-molded composites containing 2 phr polyester significantly decreased because of the transesterification reaction between the polycarbonate and polyester. The resulting pol
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4

Zhao, Yawei, and Wen Zhong. "Recent Progress in Advanced Polyester Elastomers for Tissue Engineering and Bioelectronics." Molecules 28, no. 24 (2023): 8025. http://dx.doi.org/10.3390/molecules28248025.

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Polyester elastomers are highly flexible and elastic materials that have demonstrated considerable potential in various biomedical applications including cardiac, vascular, neural, and bone tissue engineering and bioelectronics. Polyesters are desirable candidates for future commercial implants due to their biocompatibility, biodegradability, tunable mechanical properties, and facile synthesis and fabrication methods. The incorporation of bioactive components further improves the therapeutic effects of polyester elastomers in biomedical applications. In this review, novel structural modificati
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Liao, Chengzhu, Yuchao Li, and Sie Chin Tjong. "Antibacterial Activities of Aliphatic Polyester Nanocomposites with Silver Nanoparticles and/or Graphene Oxide Sheets." Nanomaterials 9, no. 8 (2019): 1102. http://dx.doi.org/10.3390/nano9081102.

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Aliphatic polyesters such as poly(lactic acid) (PLA), polycaprolactone (PCL) and poly(lactic-co-glycolic) acid (PLGA) copolymers have been widely used as biomaterials for tissue engineering applications including: bone fixation devices, bone scaffolds, and wound dressings in orthopedics. However, biodegradable aliphatic polyesters are prone to bacterial infections due to the lack of antibacterial moieties in their macromolecular chains. In this respect, silver nanoparticles (AgNPs), graphene oxide (GO) sheets and AgNPs-GO hybrids can be used as reinforcing nanofillers for aliphatic polyesters
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6

Kausar, Ayesha. "Review of fundamentals and applications of polyester nanocomposites filled with carbonaceous nanofillers." Journal of Plastic Film & Sheeting 35, no. 1 (2018): 22–44. http://dx.doi.org/10.1177/8756087918783827.

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Polyester is a versatile commercially significant polymer (thermoplastic/thermoset) well-known for its biodegradability and excellent thermal, mechanical, and chemical properties. Synthetic aromatic polyester resins usually have better moisture resistance, nonflammability, liquid crystal, strength, thermal, and environmental features compared with natural/aliphatic polyesters. Nanofillers can reinforce these important polymers to further enhance the final nanocomposite structural and physical characteristics. This review presents research devoted to polyester nanocomposites with essential nano
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7

Morrow, Cary J. "Biocatalytic Synthesis of Polyesters Using Enzymes." MRS Bulletin 17, no. 11 (1992): 43–47. http://dx.doi.org/10.1557/s0883769400046650.

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Plants and animals have been exploited as sources of materials for centuries but, as our ability to analyze and fractionate them has progressed, the extraordinary range of properties available from materials produced by living systems has continued to grow. Doi, in another article in this issue of the MRS Bulletin, presents a discussion of a group of naturally occurring polyesters related to poly(beta-hydroxybutyrate). These polyesters are formed in vivo by several microorganisms as part of an energy storage scheme. Research on these systems has allowed growth conditions to be found that can l
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8

Ma, Meng Meng, Lian Yuan Wang, and Hai Yan Zhu. "Enzymatic Degradation of Polyester-Nanoparticles by Lipases and Adsorption of Lipases on the Polyester-Nanoparticles." Advanced Materials Research 418-420 (December 2011): 2302–7. http://dx.doi.org/10.4028/www.scientific.net/amr.418-420.2302.

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Enzymatic degradation tests of polymer in form of nanoparticle (NP) were used to study the biodegradation of two different types of polymers polytetramethylene adipitate (SP4/6) and polybutylene isophthalate (PBI) by two commercially available lipases. The two lipases, which are from the yeast Candida cylindracea (CcL) and Pseudomonas species (PsL) respectively, exhibited sufficient degradation activities both for the aliphatic model polyester SP4/6 and the aromatic model polyester PBI and the use of polyester NPs has dramatically shortened the duration of enzymatic degradation tests. It has a
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9

Yang, Seung-Cheol, and Jae Pil Kim. "Flame-retardant polyesters. II. Polyester polymers." Journal of Applied Polymer Science 106, no. 2 (2007): 1274–80. http://dx.doi.org/10.1002/app.26544.

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10

Musshoff, H. "Dyeing and Printing Polyester and Polyester-Cellulosic Fabrics with Polyestren Dyes." Journal of the Society of Dyers and Colourists 77, no. 3 (2008): 89–96. http://dx.doi.org/10.1111/j.1478-4408.1961.tb02427.x.

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11

Zhao, Guangkuo, Tongtong Ge, Yunfeng Yan, Qi Shuai, and Wei-Ke Su. "Highly Efficient Modular Construction of Functional Drug Delivery Platform Based on Amphiphilic Biodegradable Polymers via Click Chemistry." International Journal of Molecular Sciences 22, no. 19 (2021): 10407. http://dx.doi.org/10.3390/ijms221910407.

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Amphiphilic copolymers with pendant functional groups in polyester segments are widely used in nanomedicine. These enriched functionalities are designed to form covalent conjugates with payloads or provide additional stabilization effects for encapsulated drugs. A general method is successfully developed for the efficient preparation of functional biodegradable PEG-polyester copolymers via click chemistry. Firstly, in the presence of mPEG as initiator, Sn(Oct)2-catalyzed ring-opening polymerization of the α-alkynyl functionalized lactone with D,L-lactide or ε-caprolactone afforded linear mPEG-
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12

Jopen, Max, Michael Paulus, Christian Sternemann, Patrick Degen, and Ralf Weberskirch. "Comparative Studies on the Organogel Formation of a Polyester in Three Different Base Oils by X-ray Analysis, Rheology and Infrared Spectroscopy." Gels 9, no. 9 (2023): 696. http://dx.doi.org/10.3390/gels9090696.

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High-performance greases typically consist of a base oil and polyurea as a thickener material. To date, few alternatives to polyureas have been investigated. Polyesters could be one such alternative; however, little is known about the gelation of such polyesters because, unlike polyureas, they cannot form hydrogen bonds between the polymer chains. Here, we present studies on the gel formation of a polyester based thickener poly(hexane dodecanoate) with 1-octanol endgroups in three different base oils, i.e., a mineral oil (Brightstock 150), a synthetic Polyalphaolefin (Spectrasyn 40) and castor
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13

Wang, Guo He, Dong Juan Gu, and Li Ning Fan. "Research on the Mechanism of Silk-Like Fabrics Based on DPF." Advanced Materials Research 332-334 (September 2011): 591–94. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.591.

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Silk-like fabrics mainly refer to polyester filament fabrics, the appearance and feeling of which is close to silk fabrics. In this paper, FDY polyesters with different dpf were used as wefts to make fabrics interwoven with silk and polyester. Through KES, drapability, luster, gas permeability and flexible test, this paper intends to discuss the influence of dpf to fabric property and style and the simulation mechanism of silk-like fabric comparing with the same kind of silk fabric.
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14

Stojanović, Sandra, Jelka Geršak, and Dušan Trajković. "Compression properties of knitted fabrics printed by sublimation transfer printing technique." Advanced Technologies 10, no. 1 (2021): 46–53. http://dx.doi.org/10.5937/savteh2101046s.

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Compression properties of textile materials are useful for determining fullness, softness, smoothness, and stiffness. In addition, compression parameters have significant influence on fabric hand value and quality of textile materials. The present paper reports a study of the sublimation printing process influence on the change in compression properties of knitted fabrics (polyester, cotton, and cotton/ polyester) intended for sportswear manufacturing. For that purpose, the KES-FB3-A Compression Tester was used for measuring compression parameters of knitted fabrics. The parameters, which cont
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15

Darie-Niță, Raluca Nicoleta, Maria Râpă, and Stanisław Frąckowiak. "Special Features of Polyester-Based Materials for Medical Applications." Polymers 14, no. 5 (2022): 951. http://dx.doi.org/10.3390/polym14050951.

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This article presents current possibilities of using polyester-based materials in hard and soft tissue engineering, wound dressings, surgical implants, vascular reconstructive surgery, ophthalmology, and other medical applications. The review summarizes the recent literature on the key features of processing methods and potential suitable combinations of polyester-based materials with improved physicochemical and biological properties that meet the specific requirements for selected medical fields. The polyester materials used in multiresistant infection prevention, including during the COVID-
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16

Zeng, Xian Ping, and Jin Fa Liu. "Project for Improving Dark Color Fastness of Polyester or Spandex." Advanced Materials Research 919-921 (April 2014): 2088–91. http://dx.doi.org/10.4028/www.scientific.net/amr.919-921.2088.

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In this paper, an analysis of dark color fastness technology of polyesters or spandexs dark color fabric was done. Through the analysis, corresponding solutions were providing to enhancing the washing dark color fastness of polyesters or spandexs synthetic elastic fabric, how to surmount the dark color fastness difference in polyester or spandex, and result is poor in white dyes combination of polyesters or spandexs fine white finished fabric
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17

Kumagai, Shogo, Yuto Morohoshi, Guido Grause, Tomohito Kameda, and Toshiaki Yoshioka. "Pyrolysis versus hydrolysis behavior during steam decomposition of polyesters using 18O-labeled steam." RSC Advances 5, no. 76 (2015): 61828–37. http://dx.doi.org/10.1039/c5ra08577b.

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A method was developed to distinguish between hydrolysis and pyrolysis pathways in the steam degradation of various polyesters. Selectivity was shown to be strongly influenced by the polyester structure.
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18

Leitão, Ana Lúcia, and Francisco J. Enguita. "Structural Insights into Carboxylic Polyester-Degrading Enzymes and Their Functional Depolymerizing Neighbors." International Journal of Molecular Sciences 22, no. 5 (2021): 2332. http://dx.doi.org/10.3390/ijms22052332.

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Esters are organic compounds widely represented in cellular structures and metabolism, originated by the condensation of organic acids and alcohols. Esterification reactions are also used by chemical industries for the production of synthetic plastic polymers. Polyester plastics are an increasing source of environmental pollution due to their intrinsic stability and limited recycling efforts. Bioremediation of polyesters based on the use of specific microbial enzymes is an interesting alternative to the current methods for the valorization of used plastics. Microbial esterases are promising ca
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19

Li, Jian, Kai Zhang, and Xun Zhang Yu. "Thickening Mechanism of Crystalline Polyester Involved in Low Pressure Sheet Molding Compounds." Advanced Materials Research 152-153 (October 2010): 619–22. http://dx.doi.org/10.4028/www.scientific.net/amr.152-153.619.

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In this article, for a better understanding of the viscosity changes in LPMC (low pressure sheet molding compounds), the thickening mechanism of crystalline polyesters was studied. And by means of varying the content of crystalline polyester resin, the thickening effect on resin paste was investigated, too. Results gained during experiments showed that there existed three kinds of functions acting in the process of thickening: swelling, hydrogen bonds and induction crystallization. The thickening effect was excellent when the amount of crystalline polyester resin was 3%. This research supports
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20

Sirrine, Justin M., Allison M. Pekkanen, Ashley M. Nelson, Nicholas A. Chartrain, Christopher B. Williams, and Timothy E. Long. "3D-Printable Biodegradable Polyester Tissue Scaffolds for Cell Adhesion." Australian Journal of Chemistry 68, no. 9 (2015): 1409. http://dx.doi.org/10.1071/ch15327.

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Additive manufacturing, or three-dimensional (3D) printing, has emerged as a viable technique for the production of vascularized tissue engineering scaffolds. In this report, a biocompatible and biodegradable poly(tri(ethylene glycol) adipate) dimethacrylate was synthesized and characterized for suitability in soft-tissue scaffolding applications. The polyester dimethacrylate exhibited highly efficient photocuring, hydrolyzability, and 3D printability in a custom microstereolithography system. The photocured polyester film demonstrated significantly improved cell attachment and viability as co
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21

McDonnell, Liam A., Peter J. Derrick, Brian B. Powell, and Philip Double. "Sustained Off-Resonance Irradiation Collision-Induced Dissociation of Linear, Substituted and Cyclic Polyesters Using a 9.4 T Fourier Transform Ion Cyclotron Resonance Mass Spectrometer." European Journal of Mass Spectrometry 9, no. 2 (2003): 117–28. http://dx.doi.org/10.1255/ejms.530.

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The fragment ions obtained from sustained off-resonance irradiation collision-induced dissociation of linear polyesters, substituted polyesters and cyclic polyesters have been characterized using a 9.4 T Fourier transform ion cyclotron resonance mass spectrometer. Charge-induced and charge-remote fragmentation channels, together with the participation of other nucleophilic groups, are proposed for the substituted polyesters. The linear polyesters were found to fragment at equivalent positions along the polymer chain whereas, under the experimental conditions employed, the cyclic polyester prod
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Huang, Chih-Feng, Shiao-Wei Kuo, Daniela Moravčíková, et al. "Effect of variations of CuIIX2/L, surface area of Cu0, solvent, and temperature on atom transfer radical polyaddition of 4-vinylbenzyl 2-bromo-2-isobutyrate inimers." RSC Advances 6, no. 57 (2016): 51816–22. http://dx.doi.org/10.1039/c6ra06186a.

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Optimization of atom transfer radical polyadditions using commercially available catalytic systems allowed obtaining control over the polyester architecture and functionality and functional linear polyesters with high molecular weight (M<sub>w</sub> = 16 200).
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23

Williams, Gwion B., Hairong Ma, Anna N. Khusnutdinova, Alexander F. Yakunin, and Peter N. Golyshin. "Harnessing extremophilic carboxylesterases for applications in polyester depolymerisation and plastic waste recycling." Essays Biochem 67, no. 4 (2023): 715–29. https://doi.org/10.1042/EBC20220255.

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The steady growth in industrial production of synthetic plastics and their limited recycling have resulted in severe environmental pollution and contribute to global warming and oil depletion. Currently, there is an urgent need to develop efficient plastic recycling technologies to prevent further environmental pollution and recover chemical feedstocks for polymer re-synthesis and upcycling in a circular economy. Enzymatic depolymerization of synthetic polyesters by microbial carboxylesterases provides an attractive addition to existing mechanical and chemical recycling technologies due to enz
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Okabayashi, Ryouichi, Yoshihiro Ohta, and Tsutomu Yokozawa. "Synthesis of telechelic polyesters by means of transesterification of an A2 + B2 polycondensation-derived cyclic polyester with a functionalized diester." Polymer Chemistry 10, no. 36 (2019): 4973–79. http://dx.doi.org/10.1039/c9py00960d.

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End-functionalized linear polyesters were synthesized by means of base-catalyzed transesterification of a cyclic polyester, obtained by A<sub>2</sub> + B<sub>2</sub> polycondensation, with a symmetric functional diester as an exchange reagent.
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Duarte, Martín E., Birgit Huber, Patrick Theato, and Hatice Mutlu. "The unrevealed potential of elemental sulfur for the synthesis of high sulfur content bio-based aliphatic polyesters." Polymer Chemistry 11, no. 2 (2020): 241–48. http://dx.doi.org/10.1039/c9py01152h.

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We introduce a novel sulfur-containing polyester derivative based on a renewable monomer bearing secondary disulfide groups. Base-mediated sulfur exchange reaction of disulfide bonds using S<sub>8</sub> delivers polyesters with tailored functional properties.
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Zhang, Rui Xin, Tie Ling Xing, and Guo Qiang Chen. "Preparation and Properties of Kaolin Modified Polyester Fibers." Advanced Materials Research 332-334 (September 2011): 227–30. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.227.

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Abstract:Kaolin masterbatch was prepared first, and then three kinds of kaolin modified polyester fibers (100 dtex) which respectively contained kaolin masterbatch 2%(PK2), 4%(PK4), 6%(PK6) were successfully spun. Properties of kaolin modified fibers were discussed. The results showed that kaolin particles were evenly dispersed in polyesters. Breaking strength and Young’s modulus of the kaolin modified fibers were decreased with the increase of the kaolin content; moisture absorption was increased with the increase of the kaolin content; boiling water shrinkage was decreased with the increase
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Wang, Haizhen, Tianrui Zhang, Kaixiang Chen, Liangkun Long, and Shaojun Ding. "Biochemical Characterization and Polyester-Binding/Degrading Capability of Two Cutinases from Aspergillus fumigatus." Microorganisms 13, no. 5 (2025): 1121. https://doi.org/10.3390/microorganisms13051121.

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Two recombinant cutinases, AfCutA and AfCutB, derived from Aspergillus fumigatus, were heterologously expressed in Pichia pastoris and systematically characterized for their biochemical properties and polyester-degrading capabilities. AfCutA demonstrated superior catalytic performance compared with AfCutB, displaying higher optimal pH (8.0–9.0 vs. 7.0–8.0), higher optimal temperature (60 °C vs. 50 °C), and greater thermostability. AfCutA exhibited increased hydrolytic activity toward p-nitrophenyl esters (C4–C16) and synthetic polyesters. Additionally, AfCutA released approximately 3.2-fold mo
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28

Loza, Sergey A., Victor V. Dotsenko, and Victor I. Zabolotskiy. "Synthesis of New Hyperbranched Phosphorus-Containing Polyesters Starting from Boltorn H20." Proceedings 9, no. 1 (2018): 7. http://dx.doi.org/10.3390/ecsoc-22-05862.

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Upon gentle treatment with SOCl2, hyperbranched polyester Boltorn H20 afforded a mixture of terminal polychlorides. The latter react with an excess of triphenylphosphine in boiling toluene or with pyridine to give a mixture of polyesters with terminal triphenylphosphonium and pyridinium fragments, respectively.
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Fu, Hao, Linbo Gong, and Shuling Gong. "A New Approach Utilizing Aza-Michael Addition for Hydrolysis-Resistance Non-Ionic Waterborne Polyester." Polymers 14, no. 13 (2022): 2655. http://dx.doi.org/10.3390/polym14132655.

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This work first synthesized a series of linear polyesters by step-growth polycondensation, then an amino-terminated hydrophilic polyether was grafted to the polyester as side-chains through aza-Michael addition to prepare a self-dispersible, non-ionic waterborne comb-like polyester (NWCPE). In contrast to traditional functionalization methods that usually require harsh reaction conditions and complex catalysts, the aza-Michael addition proceeds efficiently at room temperature without a catalyst. In this facile and mild way, the NWCPE samples with number-average molecular weight (Mn) of about 8
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Mustafayev, A. M., Y. N. Gahramanli, B. N. Babanly, and R. I. Ismailova. "SYNTHESIS AND PROPERTIES OF BROMINE-CONTAINING BICYCLIC UNSATURATED POLYESTERS." Azerbaijan Chemical Journal, no. 4 (November 14, 2023): 63–70. http://dx.doi.org/10.32737/0005-2531-2023-4-63-70.

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A method for obtaining bromine-containing bicyclic unsaturated polyesters by the interaction of 1,4,5,6,7,7-hexabromobicyclo-[2,2,1]-hept-5-ene-2,3-dicarboxylic acid anhydride, propanetriol and maleic anhydride was developed. It was found that unsaturated polyethers synthesized by a two-step method have a higher molecular weight (3130), density (1.461 g/cm3), viscosity (105 St) and ether number (400 ml KOH/g). It was found that the compositions of epoxy resin ED-20 with unsaturated polyether obtained by method III possess higher tensile strength (90 MPa), higher relative elongation (9%), highe
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Prakash, Chandra Birla Virendra Kumar Gupta and Ved Prakash Singh. "Influence of Fibre Fineness on the Properties of Recycled Polyester Blended Yarns." Journal Of The Textile Association (JTA) 85, no. 5 (2025): 1–10. https://doi.org/10.5281/zenodo.14973481.

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This study provides a comprehensive analysis of physical characteristics of recycled polyester(rPET)/modal and virgin polyester (vPET)/modal blended yarns produced using three different fibrefinenesses with varying blends. A comparative assessment of rPET and vPET fibres revealed that rPETexhibited greater tenacity and breaking elongation. FTIR analysis confirmed the presence of identicalfunctional groups in both polyesters. Thermal analysis indicated that rPET had slightly highercrystallinity, a faster crystallization rate, and lower transition temperatures than vPET. The resultsshowed that y
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Pesetskii, SS, VV Shevchenko, and VN Koval. "Effect of isocyanate chain extender on the structure and properties of the blends of poly(butylene terephthalate) and thermoplastic polyester elastomer." Journal of Thermoplastic Composite Materials 30, no. 12 (2016): 1581–602. http://dx.doi.org/10.1177/0892705716646419.

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The effect of diisocyanate chain extender (CE) additives on the change of molecular structural characteristics, rheological, and mechanical properties of the blends comprising of poly(butylene terephthalate) (PBT) and thermoplastic polyester elastomer (TPEE) obtained by reactive compounding in the melt and having different phase structure is studied. It is shown that addition of CE in the amount of 0.2 wt% to 1.25 wt% causes an increase in viscosity of polyester melts and solutions owing to the chain extension reactions and intermolecular cross-linking of macro-chains which occur in the melt.
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Hadavand, Behzad Shirkavand, Farhood Najafi, Mohammad Reza Saeb, and Alireza Malekian. "Hyperbranched polyesters urethane acrylate resin." High Performance Polymers 29, no. 6 (2017): 651–62. http://dx.doi.org/10.1177/0954008317696566.

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In the present study, response surface methodology is used to synthesize hyperbranched polyesters based on variables reaction time, ratio of monomer to core, and type of catalyst. Then, the synthesized polyesters were used for preparing hyperbranched urethane acrylates in two steps. In order to characterize these polymers, infrared spectroscopy and proton nuclear magnetic resonance is used. Hyperbranched urethane acrylates were formulated and cured by ultraviolet irradiation. Finally, dynamic mechanical thermal analysis (DMTA) test is used to investigate the viscoelastic properties of the coat
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Salopek Čubrić, Ivana, Antonija Petrov, and Goran Čubrić. "Evaluating the Impact of Environmental Exposure on the Performance of Polyester Sportswear Materials." Polymers 17, no. 12 (2025): 1616. https://doi.org/10.3390/polym17121616.

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The growing popularity of sporting activities has led to an increased demand for sportswear. Consequently, sportswear developers are, therefore, faced with the challenge of meeting the increasing and more demanding expectations of users. In this study, the effects of aging on sportswear materials made from recycled and conventional polyesters are investigated. The properties analyzed include mass per unit area, thickness, porosity, elongation, bending stiffness, abrasion, and wetting and drying behavior. The results showed that aging leads to an increase in fabric thickness, with recycled poly
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Nadher Hlail Jaddoa. "Effect of Adding Nanoclay (Hallosite) On the Thermal Properties of Unsaturated Polyester Resin." International Journal of Scientific Research in Science, Engineering and Technology 12, no. 3 (2025): 942–45. https://doi.org/10.32628/ijsrset2512109.

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Polymer composites are among the most widely used materials in industrial and engineering applications due to their versatile properties and the potential to enhance their performance through the incorporation of nanomaterials. In this study, the thermal properties of a polyester composite reinforced with halloysite nanoparticles—a type of natural nanotube known for its significant impact on improving the thermal and mechanical performance of polymers—were investigated. This research may open new horizons for the use of such materials in engineering applications. Thermogravimetric analysis (TG
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Vancso, G. Julius, and Zhanjie Tan. "Solvent clustering, polar network density, and thermodynamic interactions in coordination polymers: an inverse gas chromatography study of metal-ion-containing polyesters of poly(diethylene glycol-co-succinic acid)." Canadian Journal of Chemistry 73, no. 11 (1995): 1855–61. http://dx.doi.org/10.1139/v95-229.

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The spatial distribution of toluene and THF in the polyester poly(diethylene glycol-co-succinic acid) and its Mg2+-containing "telechelic" derivative was described by Kirkwood–Buff–Zimm (KBZ) cluster integrals. The values of KBZ integrals as a function of the volume fraction of solvent in the polymer–solvent systems were obtained from finite concentration inverse gas chromatography measurements utilizing the elution-on-a-plateau technique. The results show that toluene has a higher self-affinity to form clusters in the pure polyester than THF, which is more homogeneously distributed in the pol
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Schwab, J., G. C. Bagaglio, J. M. Bentley, and A. Christfreund. "Tailor Made Polyester Polyurethane Elastomers for Shoe Soling." Cellular Polymers 7, no. 2 (1988): 134–50. http://dx.doi.org/10.1177/026248938800700202.

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The production of shoe soles using cellular polyurethane elastomers on an industrial scale has been in progress for almost 20 years. Now, polyurethane shoe-soling systems are used not only for house and town shoes but also for work and safety boots as well as sport and leisure shoes. With the development of dual-density technology a large number of polyurethane soling systems are offered today. Further progress depends on improvements to processability and certain properties. This publication gives details of those in polyester-based systems. Developments reported in this paper include: • a ne
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A., Mohammed Ibrahim, and K. Shabeer T. "Synthesis and characterization of nanoclay doped PVC/polyester composite film." Journal of Indian Chemical Society Vol. 96, Jan 2019 (2019): 9–13. https://doi.org/10.5281/zenodo.5652567.

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P.G. &amp; Research Department of Chemistry, The New College, Chennai-600 014, India E-mail: tksresearchgroup@gmail.com Manuscript received online 01 September 2018, accepted 09 October 2018 The present study deals with the synthesis, characterization of nanoclay doped PVC/polyester composite film formed from new polyester obtained from terephthaloyl chloride with Schiff base diol formed by the reaction of 4-aminophenol with 3-hydroxy-4-methoxybenzaldehyde and 4-hydroxy-3,5-dimethoxybenzaldehyde (1:1 mole ratio) in nitrogen atmosphere. The synthesized aromatic polyesters were characterized by
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Slomkowski, Stanislaw, Teresa Basinska, Mariusz Gadzinowski, and Damian Mickiewicz. "Polyesters and Polyester Nano- and Microcarriers for Drug Delivery." Polymers 16, no. 17 (2024): 2503. http://dx.doi.org/10.3390/polym16172503.

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Many therapies require the transport of therapeutic compounds or substances encapsulated in carriers that reduce or, if possible, eliminate their direct contact with healthy tissue and components of the immune system, which may react to them as something foreign and dangerous to the patient’s body. To date, inorganic nanoparticles, solid lipids, micelles and micellar aggregates, liposomes, polymeric micelles, and other polymer assemblies were tested as drug carriers. Specifically, using polymers creates a variety of options to prepare nanocarriers tailored to the chosen needs. Among polymers,
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Latos-Brozio, Malgorzata, and Anna Masek. "Biodegradable Polyester Materials Containing Gallates." Polymers 12, no. 3 (2020): 677. http://dx.doi.org/10.3390/polym12030677.

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Gallates are widely used as antioxidants in the food and cosmetics industries. The purpose of the study was to obtain pro-ecological materials based on biodegradable polyesters, such as polylactide (PLA) and polyhydroxyalkanoate (PHA), and gallates. Gallates (ethyl, propyl, octyl, and lauryl) have not been used so far in biodegradable polymers as stabilizers and indicators of aging. This manuscript examines the properties of gallates such as antioxidant capacity and thermal stability. This paper also presents the following analyses of polymer materials: specific migration of gallates from poly
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Li, Dongfang, Tommy Iversen, and Monica Ek. "Hydrophobic materials based on cotton linter cellulose and an epoxy-activated polyester derived from a suberin monomer." Holzforschung 69, no. 6 (2015): 721–30. http://dx.doi.org/10.1515/hf-2014-0261.

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Abstract Suberin is a natural hydrophobic material that could be used to improve the water repellency of cellulose surfaces. It is also abundant in the outer bark of birch (Betula verrucosa); birch bark is a side-stream product in Scandinavia from the forest industry, which is generally burned for energy production. A suberin monomer, cis-9,10-epoxy-18-hydroxyoctadecanoic acid, was isolated from birch outer bark and polymerized via lipase (immobilized Candida antarctica lipase B). The resulting epoxy-activated polyester was characterized by nuclear magnetic resonance (NMR) imaging, matrix-assi
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Kuru, Zehra, and Mehmet Arif Kaya. "Poly(Lactic Acid) / Polyester Blends: Review of Current and Future Applications." European Journal of Research and Development 3, no. 1 (2023): 175–99. http://dx.doi.org/10.56038/ejrnd.v3i1.259.

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Poly (lactic acid) (PLA) is a promising polymer with its value and potential due to its sustainability, low carbon footprint, and being a superior bio-based polymer compared to other bioplastics. Since it is also a compostable aliphatic polyester, has been frequently subjected to research.&#x0D; Researchers have conducted studies on the compatibility of PLA, which is a bio-based, biodegradable, and compostable, renewable polymer, with traditional petrochemical-based polymers, especially polyesters such as polybutylene terephthalate (PBT), and polyethylene terephthalate (PET). It is highly impo
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Solis-Palacios, Rocio, Graciela Espinosa-Luna, Carolina Peña-Montes, Rodolfo Quintana-Castro, María Guadalupe Sánchez-Otero, and Rosa María Oliart-Ros. "Selection of Putative Polyester Hydrolases from the Metagenome of Los Humeros Geothermal Field by Means of In Silico Probes." Catalysts 14, no. 6 (2024): 379. http://dx.doi.org/10.3390/catal14060379.

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Hydrolases are the most popular enzymes, and among the most valuable in biotechnological applications. Some hydrolases, such as lipases, esterases, proteases, cellulases and amylases, are used in the food industry and the production of biopharmaceuticals, biofuels, biopolymers and detergents. Of special interest are those obtained from thermophilic microorganisms. Although there is great microbial diversity in extreme environments, the investigations aimed at detecting and isolating enzymes with potential for polyester degradation such as polyethylene terephthalate (PET) are limited. In this w
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Morikawa, Takeshi. "Polyester." Kobunshi 37, no. 11 (1988): 818–19. http://dx.doi.org/10.1295/kobunshi.37.818.

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Mountaki, Stella Afroditi, Maria Kaliva, Konstantinos Loukelis, Maria Chatzinikolaidou, and Maria Vamvakaki. "Responsive Polyesters with Alkene and Carboxylic Acid Side-Groups for Tissue Engineering Applications." Polymers 13, no. 10 (2021): 1636. http://dx.doi.org/10.3390/polym13101636.

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Main chain polyesters have been extensively used in the biomedical field. Despite their many advantages, including biocompatibility, biodegradability, and others, these materials are rather inert and lack specific functionalities which will endow them with additional biological and responsive properties. In this work, novel pH-responsive main chain polyesters have been prepared by a conventional condensation polymerization of a vinyl functionalized diol with a diacid chloride, followed by a photo-induced thiol-ene click reaction to attach functional carboxylic acid side-groups along the polyme
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Zhang, Zhaoyang, Nannan Ni, and Yahong Xu. "Effects of Different Polyols with Functions on the Properties of Polyester Polyol-Based Polyurethane Coatings." Coatings 15, no. 1 (2025): 61. https://doi.org/10.3390/coatings15010061.

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Polyester-based polyurethane coatings were widely used in automotive, industrial, construction, and plastics industries due to their excellent mechanical properties, adhesion, and relatively outstanding oil and chemical resistance. In these coatings, the type and ratio of polyester and isocyanate curing agents influenced the cohesion energy, hydrogen bonding, crystallinity, crosslinking density, molecular weight, and morphology of the polyurethane at the microscopic level, thereby affecting the macroscopic mechanical properties, electrical performance, and environmental resistance of the mater
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Sumera, Florentino C., Shienna Marie A. Pontillas, Josanelle Angela V. Bilo, and John Marty Mateo. "New Poly(Hydroxylauric-co-Lactic Acid) Liquid Polymer for Dissolving Lipophilic Drugs." KIMIKA 28, no. 1 (2017): 20–25. http://dx.doi.org/10.26534/kimika.v28i1.20-25.

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A liquid, biocompatible polyester based polymer, which could facilitate injectable formulations by simple mixing with the active substance (drug) is much needed by the pharmaceutical companies. A favourite candidate is polylactic acid (PLA) which is biocompatible and biodegradable. However PLA is solid with high crystallinity. Thus, in this research, hydroxylauric acid (HOLA) was copolymerized with lactic acid (LA) in different ratios by polycondensation technique at 180 °C, without a metal catalyst and avoiding the formation of interfering lactides, to provide a liquid polyester. The copolyme
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Shao, Fen Juan, Qun Yang, Lan Ying Li, and Da Nian Lu. "Study on Synthesis and Characterization of Unsaturated Polyester by Enzyme-Catalyzed." Key Engineering Materials 575-576 (September 2013): 67–70. http://dx.doi.org/10.4028/www.scientific.net/kem.575-576.67.

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Unsaturated polyester was prepared with adipic acid (AA), fumaric acid (FA), itaconic acid (IA) and 1, 6-hexanediol (HD) by enzyme-catalyzed polmerization. The insoluble gel fraction (Qs), as the cross-linking degree of cured unsaturated polyesters which could be self-cross-linked at high temperature through C=C in it, was got by Soxhlet Extraction. The properties were investigated by FT-IR, 1H NMR, DSC, XRD and so on. The results indicated that the C=C in unsaturated diacids reduced the acitvity of N435, which affected the polmerization. With the introduction of C=C of IA or FA, the Mn of pol
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Nikolic, Marija, Dejan Poleti, and Jasna Djonlagic. "Biodegradable polyesters based on succinic acid." Chemical Industry 57, no. 11 (2003): 526–35. http://dx.doi.org/10.2298/hemind0311526n.

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Two series of aliphatic polyesters based on succinic acid were synthesized by copolymerization with adipic acid for the first series of saturated polyesters, and with fumaric acid for the second series. Polyesters were prepared starting from the corresponding dimethyl esters and 1,4-butanediol by melt transesterification in the presence of a highly effective catalyst tetra-n-butyl-titanate, Ti(0Bu)4. The molecular structure and composition of the copolyesters was determined by 1H NMR spectroscopy. The effect of copolymer composition on the physical and thermal properties of these random polyes
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Urbánek, Tomáš, Eliézer Jäger, Alessandro Jäger, and Martin Hrubý. "Selectively Biodegradable Polyesters: Nature-Inspired Construction Materials for Future Biomedical Applications." Polymers 11, no. 6 (2019): 1061. http://dx.doi.org/10.3390/polym11061061.

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In the last half-century, the development of biodegradable polyesters for biomedical applications has advanced significantly. Biodegradable polyester materials containing external stimuli-sensitive linkages are favored in the development of therapeutic devices for pharmacological applications such as delivery vehicles for controlled/sustained drug release. These selectively biodegradable polyesters degrade after particular external stimulus (e.g., pH or redox potential change or the presence of certain enzymes). This review outlines the current development of biodegradable synthetic polyesters
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