ABSTRACT The use of glycidyl methacrylate (GMA) and acrylic acid (AAc) as grafting monomers to improve the mechanical properties, particularly tensile strength, of recycled polyethylene (R-PE) is reported in this study. The AAc monomer was implemented to improve the stability of radical chains which could undergo GMA grafting. When the content of GMA and AAc was 1.2% and 0.6%, respectively, the tensile strength increased from 17.26 to 29.3 MPa, the elongation at break increased from 107% to 647%, and the melt index decreased from 3.42 to 0.97 g/10 min. The sensitivity of the dynamic behaviour of R-PE-g-(AAc-co-GMA) to temperature was also reduced relative to R-PE. Differential scanning calorimetry (DSC) results showed that the melting temperature was increased and the crystallisation temperature of R-PE-g-(AAc-co-GMA) was reduced. The fracture morphology of the samples was also shown by scanning electron microscope (SEM) observations to transition from brittle fracture to ductile fracture upon undergoing the grafting process.

中文翻译：

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通过丙烯酸辅助甲基丙烯酸缩水甘油酯熔融接枝改善回收聚乙烯的机械和流变性能

摘要 本研究报道了使用甲基丙烯酸缩水甘油酯 (GMA) 和丙烯酸 (AAc) 作为接枝单体来提高回收聚乙烯 (R-PE) 的机械性能，特别是拉伸强度。实施 AAc 单体是为了提高可以进行 GMA 接枝的自由基链的稳定性。当GMA和AAc的含量分别为1.2%和0.6%时，拉伸强度从17.26 MPa提高到29.3 MPa，断裂伸长率从107%提高到647%，熔体指数从3.42降低到0.97 g/10分钟 相对于 R-PE，R-PE-g-(AAc-co-GMA) 的动态行为对温度的敏感性也降低了。差示扫描量热法(DSC)结果表明，R-PE-g-(AAc-co-GMA)的熔融温度升高，结晶温度降低。