Morphology, thermal behavior, and mechanical properties of PA1010/PP and PA 1010/PP-g-GMA blends
Morphology, thermal behavior, and mechanical properties of PA1010/PP and PA 1010/PP-g-GMA blends
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DOI：
10.1002/(sici)1097-4628(19970523)64:8
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发表时间：
1997-05
影响因子：
3
通讯作者：
Xiaoming Zhang;Xinglin Li;Dongmei Wang;Z. Yin;Jinghua Yin
中科院分区：
文献类型：
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作者：
Xiaoming Zhang;Xinglin Li;Dongmei Wang;Z. Yin;Jinghua Yin
将甲基丙烯酸缩水甘油酯(GMA)熔融接枝到聚丙烯(PP)分子链上，实现了PP的改性。将得到的PP-g-GMA用于制备尼龙1010(PA1010)和PP-g-GMA的二元共混物。根据所用PA1010的性质和用量，用扫描电子显微镜(SEM)观察了不同共混物的形态。与PA1010/PP-g-GMA和PA1010/PP二元共混物相比，在相同组成下，PP-g-GMA的微区尺寸远小于PP。结果表明，PA1010/PP-g-GMA共混物的力学性能明显好于PA1010/PP共混物，且润湿条件对共混物的力学性能有显著影响。PA1010/PP和PA1010/PP-g-GMA的弯曲弹性模量与水的关系不同。这些行为可以归因于两组分之间的化学相互作用和在PA1010/PP-g-GMA共混物中的良好分散。进行了热分析和流变学分析，以确定共混过程中可能发生的化学反应。(C)1997年John Wiley&Sons，Inc.
The modification of polypropylene (PP) was accomplished by melt grafting glycidyl methacrylate (GMA) on its molecular chains. The resulting PP-g-GMA was used to prepare binary blends of polyamide 1010 (PA1010) and PP-g-GMA. Different blend morphologies were observed by scanning electron microscopy (SEM) according to the nature and content of PA1010 used. Comparing the PA1010/PP-g-GMA and PA1010/PP binary blends, the size of the domains of PP-g-GMA were much smaller than that of PP at the same compositions. It was found that mechanical properties of PA1010/PP-g-GMA blends were obviously better than that of PA1010/PP blends, and the mechanical properties were significantly influenced by wetting conditions for uncompatibilized and compatibilized blends. A different dependence of the flexural modulus on water was found for PA1010/PP and PA1010/PP-g-GMA. These behaviors could be attributed to the chemical interactions between the two components and good dispersion in PA1010/PP-g-GMA blends. Thermal and rheological analyses were performed to confirm the possible chemical reactions taking place during the blending process. (C) 1997 John Wiley & Sons, Inc.