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首页> 外文期刊>Journal of Applied Polymer Science >Poly(styrene-co-maleic anhydride) Ionomers as Nucleating Agent on the Crystallization Behavior of Poly(ethylene terephthalate)
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Poly(styrene-co-maleic anhydride) Ionomers as Nucleating Agent on the Crystallization Behavior of Poly(ethylene terephthalate)

机译：聚（苯乙烯-马来酸酐共聚）离聚物作为成核剂对聚对苯二甲酸乙二醇酯结晶行为的影响

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摘要

Poly(styrene-co-maleic anhydride) (SMA) ionomers were synthesized and designed as a new kind of nucleation agent according to the crystallization theory for improving the crystallization of poly(ethylene terephthalate) (PET). The crystallization behavior of PET with the addition of nucleation agents was investigated by differential scanning calorimetry, polarized-light microscope, and X-ray diffraction (XRD). Avrami equation and Hoffman-Lauritzen theory are adopted for analyzing isothermal and non-isothermal crystallization kinetics, respectively. The results show that the addition of 1 wt % SMA ionomers effectively accelerates the crystallization rate and reduces the fold surface free energy of PET at high temperature regions. PLM results also indicated that the crystals impinge on each other, thus decreasing the spherulite size for PET/SMA ionomers samples compared with PET. XRD measurement revealed that the introduction of SMA ionomers does not change the crystal structure but indeed accelerates the crystallinity of PET. The results clearly demonstrate that our synthesized SMA ionomers are an efficient nucleating agent for PET. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41240.
机译：根据结晶理论，合成了聚苯乙烯-马来酸酐共聚物（SMA）离聚物，并将其设计为一种新型的成核剂，以改善聚对苯二甲酸乙二醇酯（PET）的结晶度。通过差示扫描量热法，偏振光显微镜和X射线衍射（XRD）研究了添加成核剂的PET的结晶行为。采用Avrami方程和Hoffman-Lauritzen理论分别分析了等温和非等温结晶动力学。结果表明，加入1 wt％的SMA离聚物可有效地加快结晶速度，并降低PET在高温区域的折叠表面自由能。 PLM结果还表明，晶体相互碰撞，因此与PET相比，PET / SMA离聚物样品的球晶尺寸减小。 XRD测量表明，SMA离聚物的引入不会改变晶体结构，但确实会加速PET的结晶度。结果清楚地表明，我们合成的SMA离聚物是PET的有效成核剂。 （c）2014 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41240。

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