Citation: Miao-miao Zhang, Li-yun Zha, Huan-huan Gao, Yi-jing Nie, Wen-bing Hu. How Polydispersity of Network Polymers Influences Strain-induced Crystal Nucleation in a Rubber[J]. Chinese Journal of Polymer Science, ;2014, 32(9): 1218-1223. doi: 10.1007/s10118-014-1495-9
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Network polymers in a rubber or a gel often contain non-uniform chain lengths. By means of dynamic Monte Carlo simulations of polymer mixtures with various compositions of two chain lengths, we investigated how the factor of polydispersity influences their strain-induced crystal nucleation. Under a high temperature and a high strain rate, the stretching of both polymers revealed that crystal nucleation is mainly accelerated by the presence of short-chain polymers; nevertheless, both polymers join together in the nucleation process. Further analysis proved that crystal nucleation is initiated from those highly stretched short segments, which are rich on the short-chain polymers.
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Keywords:
- Crystallization,
- Rubber,
- Polydispersity,
- Molecular simulation
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