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Synthesis and characterization of copolymers of poly(m-xylylene adipamide) and poly(ethylene terephthalate) oligomers by melt copolycondensation
【文件类型】 【消费金额】2.4 【文章页数】8 【会员操作】  
【文章作者】Fenglei Bi;Jianqiang Shao;Zhenhao Xi;Ling Zhao;Di Liu;
【文章摘要】      Poly(m-xylylene adipamide)/poly(ethylene terephthalate)(MXD6/PET) copolymers are synthesized by melt copolycondensation with 1–5 wt% low molecular weight PET oligomers into the MXD6 oligomers at 260 °C.FR-IR and1 H NMR analysis results indicate that the interchange reaction has occurred between MXD6 oligomers and PET oligomers. The thermal behavior of copolymers shows that the melting temperature of MXD6/PET copolymers decreases with the increasing of amount of PET oligomers, while the crystallization temperature accordingly increases. And the equilibrium temperature Tm0 is evaluated to be 251.8 °C for the copolymers with5 wt% PET oligomer adding, which is very close to that of neat MXD6. The tensile and impact strength of MXD6/PET copolymers are significantly improved than that of pure MXD6 by mechanical properties test, and the microfibril structure in the impact fracture sample's surface reveals the feature of ductile fracture.
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【期刊】Chinese Journal of Chemical Engineering【卷】【ISSUE】【ISSUEID】    【文章期份】2016    【发布日期】2017/2/18 0:00:00    点击率:1    打印    关闭
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