Annealing of melt‐crystallized polyethylene and its influence on microstructure and mechanical properties: A comparative study on branched and linear polyethylenes
Annealing of melt‐crystallized polyethylene and its influence on microstructure and mechanical properties: A comparative study on branched and linear polyethylenes
复制标题
DOI：
10.1002/polb.22304
复制
发表时间：
2011-10
期刊：
影响因子：
--
通讯作者：
Shijie Song;Jiachun Feng;Peiyi Wu
中科院分区：
文献类型：
--
作者：
Shijie Song;Jiachun Feng;Peiyi Wu
对两种不同拓扑结构的熔融结晶聚乙烯（PE），即高支化聚乙烯和线性聚乙烯进行了退火处理，比较研究了其显微组织演变和相应力学性能的变化。结果表明，退火对两种pe的片层后排列有不同程度的影响。支化聚乙烯，其包含共聚单体的骨干，显示出更通用的退火效果时，与线性对应物。对于pe，这是第一次将退火引起的微观结构变化与一种重要但鲜为人知的特性联系起来
Annealing treatments have been performed on two melt-crystallized polyethylenes (PE) with different topolo- gies, namely highly branched and linear PE, to comparatively investigate the microstructural evolution and corresponding changes of mechanical property. It shows that annealing induced different degrees of variation in the lamellar rear- rangement of the two PEs. Branched PE, which incorporates comonomers on the backbones, shows a more versatile annealing effect when compared with the linear counterpart. With respect to PEs, it is for the first time a connection was made between the annealing-induced microstructural changes and an important but less understood property known as