Effect of Poly(acrylic acid)-Modified Poly(ethylene terephthalate) on Improving the Integrated Mechanical Properties of Poly(ethylene terephthalate)/Elastomer Blend

Xie, Lizhao; Xie, Yunyun; Wu, Qianghua; Wang, Mozhen; Wu, Qichao; Xiao, Zuoyi; Ge, Xinlei

doi:10.1021/acs.iecr.5b00091

Cited by 19 publications

(18 citation statements)

References 37 publications

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“…It is universally believed that the strong interfacial adhesion could induce matrix to generate crazes, shear bands, and plastic deformation during the impact process, thereby dissipating impact energy. Simultaneously, the crazes can be terminated by shear bands and will not develop into cracks . Thus, the key of effective toughening is to strengthen the interfacial adhesion …”

Section: Resultsmentioning

confidence: 99%

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Super‐Toughened Heat‐Resistant Poly(lactic acid) Alloys By Tailoring the Phase Morphology and the Crystallization Behaviors

Yang

et al. 2020

Journal of Polymer Science

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The interfacial grafting copolymerization and the compatibility between poly(lactic acid) (PLA) and ethylene-vinyl acetate-glycidyl methacrylate elastomer (EVM-GMA) are adjusted by varying the blending temperatures. High temperature is favored to the grafting reaction between epoxy groups of the EVM-GMA and terminal groups of the PLA, resulting in better compatibility between the two components. Taking PLA/EVM-GMA (80/20) blend as an example, an increase in blending temperature from 175 to 230 C led to a 42.8% reduction in EVM-GMA particle size, and consequently 137.8% and 52.6% increases in elongation at break (Eb) and notched impact strength (NIS), respectively. In comparison, the Eb and NIS of PLA/EVM blends without any interfacial reaction deteriorated dramatically due to thermal degradation of the PLA at high(er) temperatures. Furthermore, the PLA/EVM-GMA blend prepared at 230 C possesses both excellent toughness (Eb > 60%, NIS > 60 kJ m −2 ) and high heat deflection temperature (>90 C) after annealing at 100 C. This work provides a new approach in designing highperformance biobased materials which may broaden the application range of PLA in engineering areas.Although reactive blending with elastomers has been reported as an effective method for toughening of PLA, the effect of blending temperature, that is, the extent of in situ grafting reactions on the mechanical properties of PLA/elastomer blends has rarely been studied. The higher the blending temperature is, the higher reaction extent and compatibilization between PLA and elastomer. However, it may also lead to thermal degradation of PLA matrix, which is not conducive to the final mechanical performances (e.g., tensile strength).Additional supporting information may be found in the online version of this article.

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Section: Resultsmentioning

confidence: 99%

“…Simultaneously, the crazes can be terminated by shear bands and will not develop into cracks . Thus, the key of effective toughening is to strengthen the interfacial adhesion …”

Section: Resultsmentioning

confidence: 99%

Super‐Toughened Heat‐Resistant Poly(lactic acid) Alloys By Tailoring the Phase Morphology and the Crystallization Behaviors

Yang

et al. 2020

Journal of Polymer Science

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“…In addition, for stronger penetration, g-ray irradiation has been widely used to investigate the radiation effect and modication. [28][29][30] Therefore, in this work, g-ray radiation was used. It should be noted that even under g-ray irradiation, the radiolysis of the solvent and damage to the impurities cannot be avoided.…”

Section: Introductionmentioning

confidence: 99%

Intensive evaluation of radiation stability of phlogopite single crystals under high doses of γ-ray irradiation

et al. 2019

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“…Recently, environmental policies for economizing raw materials are promoting the recycling of plastics [3] [4], and great interest is being drawn to recycled-PET (RPET). An interesting method for improving the mechanical and thermal properties of polymer materials is the blend technique [5] [6] [7] [8] [9]. Mechanical recycling by blending PET/RPET with other polymers has shown economic benefit and is a feasible solution for producing new polymer products.…”

Section: Introductionmentioning

confidence: 99%

Properties of Recycled-Polyethylene Terephthalate/Polycarbonate Blend Fabricated by Vented Barrel Injection Molding

Thodsaratpreeyakul¹,

Uawongsuwan²,

Negoro³

2018

MSA

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In this research, recycled-polyethylene terephthalate (PET) and polycarbonate (RPET/PC) blends fabricated by vented barrel injection molding were presented to better understand the effect of devolatilization during molding process. The effect of dried pellets, non-dried pellets, using an opened-vented hole, and using a closed-vented hole on the miscibility, morphology, thermal properties and mechanical properties of RPET/PC blends was investigated. The results indicated that no drying decreases dispersion, thermal properties, and mechanical properties of RPET/PC blends due to hydrolysis degradation of recycled-PET during the injection molding process. Using the venting system with non-dried RPET/PC blends partially improves dispersion, thermal properties and molecular weight of RPET/PC blends processed without drying, giving results that are similar to those processed with drying. Regarding the flexural properties, using the venting system without drying prevents the flexural properties from decreasing in RPET/PC blends, if the amount of RPET is less than 75 wt%. When the content of RPET is over 75 wt%, using the venting system does not eliminate the decrease in flexural properties of RPET/PC blends. When the venting system is applied to non-dried RPET, despite hydrolysis degradation of RPET not being completely eliminated, the damaging effects are nonetheless reduced compared with those samples processed without the venting system. As a result, vented barrel injection molding hardly prevents non-dried RPET/PC blends from having reduced flexural properties when the content of RPET is greater than 75 wt%.

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Effect of Poly(acrylic acid)-Modified Poly(ethylene terephthalate) on Improving the Integrated Mechanical Properties of Poly(ethylene terephthalate)/Elastomer Blend

Cited by 19 publications

References 37 publications

Super‐Toughened Heat‐Resistant Poly(lactic acid) Alloys By Tailoring the Phase Morphology and the Crystallization Behaviors

Super‐Toughened Heat‐Resistant Poly(lactic acid) Alloys By Tailoring the Phase Morphology and the Crystallization Behaviors

Intensive evaluation of radiation stability of phlogopite single crystals under high doses of γ-ray irradiation

Properties of Recycled-Polyethylene Terephthalate/Polycarbonate Blend Fabricated by Vented Barrel Injection Molding

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