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首页> 外文期刊>Journal of Applied Polymer Science >Rheological behavior of styrene-maleic anhydride/polyol blends obtained through reactive processing
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Rheological behavior of styrene-maleic anhydride/polyol blends obtained through reactive processing

机译：通过反应过程获得的苯乙烯-马来酸酐/多元醇共混物的流变行为

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摘要

The condensation reaction of styrene-maleic anhydride copolymer (SMAH) with polytetramethylene ether glycol (PTMEG) in the presence or absence of a hydrated zinc acetate catalyst was studied in a batch mixer. As a control, pure SMAH and an SMAH/catalyst blend were also subjected to the same processing conditions. The reaction characteristics of the blends were investigated by Fourier transform infrared spectroscopy (FTIR) and thermal and rheological analysis. FTIR analysis of the SMAH/PTMEG blend indicated ester formation. The addition of zinc acetate and/or PTMEG to SMAH decreased the glass transition temperature of pure SMAH. Oscillatory shear properties of storage modulus, G', loss modulus, G", and complex viscosity, eta*, were measured. The SMAH/PTMEG/zinc acetate blend had higher G', G", and eta* than the blend without the zinc acetate catalyst. The parameters of the relaxation spectra were calculated by using the experimental oscillatory data and the generalized Maxwell model. Zero shear viscosity and the mean relaxation time increased with addition of zinc acetate and/or PTMEG to SMAH as a result of chain extension/branching reactions. (C) 2002 Wiley Periodicals, Inc. [References: 17]
机译：在间歇式混合器中研究了苯乙烯-马来酸酐共聚物（SMAH）与聚四亚甲基醚二醇（PTMEG）在水合乙酸锌催化剂存在或不存在下的缩合反应。作为对照，纯SMAH和SMAH /催化剂共混物也经受相同的加工条件。通过傅里叶变换红外光谱（FTIR）以及热流变学分析研究了共混物的反应特性。 SMA / PTMEG共混物的FTIR分析表明形成了酯。向SMAH中添加乙酸锌和/或PTMEG降低了纯SMAH的玻璃化转变温度。测量了储能模量G'，损耗模量G“和复数粘度eta *的振荡剪切特性。与未添加SMAH / PTMEG /乙酸锌的共混物相比，SMAH / PTMEG /乙酸锌共混物的G'，G”和eta *更高。醋酸锌催化剂。通过使用实验振荡数据和广义麦克斯韦模型来计算弛豫谱的参数。链增长/支化反应的结果是，向SMAH中添加乙酸锌和/或PTMEG后，零剪切粘度和平均松弛时间增加。 （C）2002 Wiley Periodicals，Inc. [参考：17]

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