Stereocomplex crystallization in cyclic polymer blends studied using dynamic Monte Carlo simulations

Due to the absence of chain ends, cyclic polymers exhibit different crystallization behaviours from linear polymers. In the current work, the dynamic Monte Carlo simulation method was used to explore stereocomplex crystallization in cyclic polymer blends. Compared with linear polymer blends, the cyc...

Full description

Saved in:
Bibliographic Details
Published in:CrystEngComm 2023-02, Vol.25 (9), p.1347-1357
Main Authors: Wu, Haitao, Wang, Xinyu, Zhu, Qian, Yan, Xingjia, Xue, Quyi, Zhou, Zhiping, Hao, Tongfan, Li, Zhaolei, Nie, Yijing
Format: Article
Language:English
Subjects:
Crystallites
Crystallization
High temperature
Lattice sites
Melt temperature
Miscibility
Monte Carlo simulation
Polymer blends
Polymers
Scandium
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Due to the absence of chain ends, cyclic polymers exhibit different crystallization behaviours from linear polymers. In the current work, the dynamic Monte Carlo simulation method was used to explore stereocomplex crystallization in cyclic polymer blends. Compared with linear polymer blends, the cyclic polymer blends have lower final contents of stereocomplex crystallites (SCs). This decline in the stereocomplexation ability can be attributed to the discrepancy in four factors (melting temperature, chain miscibility, segmental mobility and crystallization mode). The cyclic polymer blends exhibit higher melting temperature, lower miscibility, weaker segmental mobility and higher fraction of chain-folding, leading to the formation of less SCs. In addition, the final SC contents decrease with the increase of chain length of the cyclic polymers, except the system with a chain length of 16 lattice sites, which has higher final SC contents compared with the system with a chain length of 8 lattice sites at high temperatures. This abnormal phenomenon is caused by the improvement of segmental mobility in the systems with longer chains that have weaker movement correlations between different segments. Molecular simulation was used to explore the mechanism of the stereocomplex crystallization in cyclic polymer blends.
ISSN:1466-8033
1466-8033
DOI:10.1039/d2ce01043g