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首页> 外文期刊>Journal of Applied Polymer Science >Macromolecular modification of EPDM;Wettability,Miscibility,and morphology study
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Macromolecular modification of EPDM;Wettability,Miscibility,and morphology study

机译：EPDM的大分子修饰;润湿性，互溶性和形态研究

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摘要

The present investigation deals with studies on wettability, miscibility, and morphology of the macromolecularly modified EPDM. Two different maleated EPDM rubbers (grafted rubber) were chosen (0.5 and 1% maleation) for such modification and they were used in various proportions. Wettability of the rubber substrate, as observed from dynamic contact angle measurement, was improved using these grafted rubbers. Results of X-ray photoelectron spectroscopy showed an increase in oxygen level with higher levels of grafted rubber in the blends. Morphology study by transmission electron microscopy showed a smaller domain size for the blend with higher maleic anhydride content in the grafted rubber. The viscosity versus blend ratio results showed a negative deviation behavior for blends with 1% grafted rubber, whereas a positive negative deviation behavior was observed in blends with 0.5% grafted EPDM. As the strength of interaction increased, the glass transition shifted to a higher temperature. All blends were heterogeneous, as indicated by different degrees of dispersion.
机译：本研究涉及对大分子改性的EPDM的润湿性，可混溶性和形态的研究。选择两种不同的马来化EPDM橡胶（接枝橡胶）（马来酸化率为0.5和1％）进行这种改性，并以不同的比例使用它们。从动态接触角测量中观察到，使用这些接枝橡胶可改善橡胶基材的润湿性。 X射线光电子能谱的结果表明，随着共混物中橡胶含量的增加，氧含量增加。透射电子显微镜的形态学研究表明，接枝橡胶中马来酸酐含量较高的共混物的畴尺寸较小。粘度对共混物比率的结果表明，含有1％接枝橡胶的混合物的负偏差行为，而具有0.5％接枝EPDM的混合物的正负偏差行为。随着相互作用强度的增加，玻璃化转变温度升高。如不同程度的分散所表明的，所有共混物都是异质的。

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