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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis and characterization of alternating copolymer from carbon dioxide and propylene oxide
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Synthesis and characterization of alternating copolymer from carbon dioxide and propylene oxide

机译：二氧化碳与环氧丙烷的交替共聚物的合成与表征

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High yield and pure zinc glutarate catalysts used for copolymerization of carbon dioxide and propylene oxide have been synthesized in different solvents by ultrasonic methodology. For the purposes of comparison, low-yield zinc glutarates were also synthesized via mechanical stirring method with other synthetic conditions remaining unchanged. Fourier Transform Infrared Spectroscopy and wide-angle X-ray diffraction techniques confirmed the presence of high-quality zinc glutarate catalysts. Accordingly, poly(propylene carbonate) (PPC) can be synthesized from carbon dioxide and propylene oxide using the zinc glutarate catalysts. It was confirmed that the as-prepared PPC had an alternating copolymer structure together with high molecular weight. The thermal and mechanical properties of the obtained PPC copolymer were determined by means of differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and tensile test. DSC and TGA results showed that the PPC copolymer exhibited high glass transition temperature (39.39degreesC) and decomposition temperature (278degreesC) when compared to their corresponding values reported in the literature. Tensile test showed that the PPC film exhibited superior mechanical strength. (C) 2002 Wiley Periodicals, Inc. [References: 36]
机译：通过超声方法在不同溶剂中合成了用于二氧化碳和环氧丙烷共聚的高收率和纯净的戊二酸锌催化剂。为了比较，还通过机械搅拌法合成了低产率的戊二酸锌，而其他合成条件保持不变。傅里叶变换红外光谱和广角X射线衍射技术证实了高质量的戊二酸锌催化剂的存在。因此，可以使用戊二酸锌催化剂由二氧化碳和环氧丙烷合成聚碳酸亚丙酯（PPC）。证实了所制备的PPC具有交替的共聚物结构以及高分子量。通过差示扫描量热法（DSC），热重分析法（TGA）和拉伸试验来确定所获得的PPC共聚物的热和机械性能。 DSC和TGA结果表明，与文献中报道的相应值相比，该PPC共聚物表现出高的玻璃化转变温度（39.39℃）和分解温度（278℃）。拉伸试验表明，PPC膜表现出优异的机械强度。 （C）2002 Wiley Periodicals，Inc. [参考：36]

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