Polymer Degradation and Stability
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#1M. Pecora (UDS: University of Strasbourg)
#2Olga Smerdova (University of Poitiers)H-Index: 4
Last. Marco Gigliotti (University of Poitiers)H-Index: 16
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Abstract null null A cyclic indentation test was carried out on PR520 epoxy resin and its 3D interlock carbon fiber reinforced composite in order to study the effects of thermo-oxidative ageing on the material local properties. Thermal ageing has been performed in air at 150°C, which is close to the service temperature in warm zones of aircrafts, for different durations. Two parameters have been considered in this study: the reload indentation modulus, representative of the elastic response, and...
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#1Zilong Zhang (Jiangnan University)
#2Xiaohan Li (Jiangnan University)
Last. Xiaoya Liu (Jiangnan University)H-Index: 32
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Abstract null null Development of new allyl compounds to modify bismaleimide (BMI) resins for improving the toughness while maintaining a high thermal performance and flame retardancy is still urgent. In this study, we synthesized the allyl ether of resveratrol (AER), a bio-based allyl compound, to modify BMI resin. A series of BMI/AER resins (BA resins) were prepared by changing the molar ratio of BMI to AER. Compared with 2,2′-diallyl bisphenol A (DBA) modified BMI resins (BD resins), which ha...
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Abstract null null Poly (lactic acid) (PLA), as a biodegradable and biocompatible polymer, has attracted extensive attention and investigation in recent years. However, the inherent brittleness of PLA greatly limits its application. In this work, super toughed PLA-based blends were prepared by facile melt blending of PLA with poly (ethylene vinyl acetate) (EVA) and compatibilized by ethylene-methyl acylate-glycidyl methacrylate (E-MA-GMA), owing to the partial miscibility with EVA domains and th...
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#1Guo Rui (HIT: Harbin Institute of Technology)H-Index: 2
#2Guijun Xian (HIT: Harbin Institute of Technology)H-Index: 24
Last. Huang Shengde (Sinopec)
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Abstract null null The hygrothermal ageing of fiber reinforced polymer (FRP) composite rod served as bridge cables played a key role on the long-term service performances. In the present paper, two types of pultruded carbon/glass fiber reinforced epoxy hybrid composite rods, one with uniformly dispersed carbon and glass fibers, and the other with glass fiber shell and carbon fiber core, were investigated on the water uptake and interface shear strength. The ageing condition was immersion in deio...
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#1Yongqiang Guo (HIT: Harbin Institute of Technology)H-Index: 4
#2Chao Liu (SZU: Shenzhen University)H-Index: 7
Last. Chunhua Zhang (HIT: Harbin Institute of Technology)H-Index: 15
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Abstract null null This study aims to explore the effects of gamma rays on various properties of poly(1,1-difluoroethylene) (PVDF) membranes under different irradiation conditions. The effects of 60Co γ-ray irradiation on the hydrophilicity, permeability, and mechanical performances of the PVDF membranes were discussed. Results showed that the size of the radiation dose rate had almost no effect on the performance of the membranes, as determined by the total radiation dose. The fracture and coll...
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#1Katsuya Komiyama (UTokyo: University of Tokyo)
#2Taku Omura (UTokyo: University of Tokyo)H-Index: 1
Last. Tadahisa Iwata (UTokyo: University of Tokyo)H-Index: 55
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Abstract null null The biodegradation behaviors of several forms of poly[(R)-3-hydroxybutyrate-co-(R)-3-hydroxyvalerate] (P(3HB-co-3HV)) in seawater and freshwater, namely, powder, cast film, undrawn fiber, and fivefold-drawn fiber, were analyzed via biochemical oxygen demand, weight loss, and scanning electron microscopy measurements. The powder showed the highest degradation rate, attributed to its larger surface area, which allows microorganisms to attach to the surface and form a biofilm tha...
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#3Kaiqi Li (CAS: Chinese Academy of Sciences)
#4Shaomin Feng (CAS: Chinese Academy of Sciences)H-Index: 1
Last. Youkun Fan (CAS: Chinese Academy of Sciences)
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Abstract null null As soft-tissue materials, poly (1,3-trimethylene carbonate) (PTMC) must have adequate mechanical properties as well as good shape stability under long-term cyclic deformation conditions. With trimethylolpropane triacrylate (TMPTA), pentaerythritol triacrylate (PETA), and pentaerythritol tetraacrylate (PET4A) as crosslinking agents, PTMC networks were prepared by gamma irradiation under vacuum to improve mechanical properties and resist creep. FTIR demonstrated that PTMC networ...
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#1Veronika Gajdosova (CAS: Academy of Sciences of the Czech Republic)H-Index: 5
#2Miroslav Šlouf (CAS: Academy of Sciences of the Czech Republic)H-Index: 33
Last. Jan Pilař (CAS: Academy of Sciences of the Czech Republic)H-Index: 12
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Abstract null null Polymer plaques made of high-density polyethylene (HDPE) or cycloolefin copolymer (COC) were stabilized with natural phenolic stabilizer (+)-catechin (CAT) and aged using accelerated weathering technique (WOM; accelerated photooxidation). The efficiency of the phenolic stabilizer was compared with a well-established hindered amine stabilizer (HAS) Tinuvin®770 (Tin770). In pursuit of the stabilization and identification of short-living radicals generated in the process of photo...
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Top fields of study
Composite material
Organic chemistry
Chemistry
Polymer chemistry
Materials science
Polymer
Thermal stability