期刊
CHINESE JOURNAL OF POLYMER SCIENCE
卷 32, 期 9, 页码 1218-1223出版社
SPRINGER
DOI: 10.1007/s10118-014-1495-9
关键词
Crystallization; Rubber; Polydispersity; Molecular simulation
资金
- National Natural Science Foundation of China [20825415, 21274061]
- National Basic Research Program of China [2011CB606100]
- Program for Changjiang Scholars and Innovative Research Teams in Universities
- Anhui Tong Feng Electronics Corporation
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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