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The structure and mechemism of PPB-g-MAH
Author(s): 
Pages: 65-68
Year: Issue:  2
Journal: CHINA SYNTHETIC RESIN AND PLASTICS

Keyword:  聚丙烯丙烯-丁二烯共聚物马来酸酐接枝结构机理;
Abstract: 用溶液接枝方法将马来酸酐接枝于丙烯-丁二烯共聚物(PPB),制得聚丙烯改性产物.采用傅里叶变换红外光谱、核磁共振波谱、差示扫描量热法、凝胶渗透色谱等表征接枝产物的结构及性能.研究发现,接枝反应主要发生在PPB的丁二烯链段,少量发生在聚丙烯链段;马来酸酐的接枝率随着PPB中丁二烯含量的增加而增加,在接枝率为0~11.7%时,接枝产物的结晶温度从93.0℃升高到97.4℃,而结晶焓从61.8 J/g降低到44.9 J/g.
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