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Which is More Efficient as Compatibilizer: Di-block or Multiblock Copolymer?
Da-chun Sun,Hao-jun Liang*
Author NameAffiliationE-mail
Da-chun Sun Department of Educational Technology, Baicheng Normal College, Baicheng 137000, China  
Hao-jun Liang* Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China hjliang@ustc.edu.cn 
Abstract:
Monte Carlo simulations were used to investigate the compatibilizing behaviors of multi-block copolymers with different architectures in A/B/(block copolymer) ternary blends. The volume fraction of homopolymer A, employed as the dispersed phase, was 19%. The simulations illustrate how a di- or multi-block copolymer aggregates at the interfaces and influences the phase behaviour of such incompatible polymer blends. The di-block copolymer chains tend to "stand" on the interface whereas the multi-block chains lie on the interface.In comparison with the dj-block copolymer, the block copolymers with 4, or 10 blocks can occupy more areas on the interface, and thus the multi-block copolymers have higher efficiency for the retardation of the phase separation.
Key words:  Monte Carlo simulation, Compatibilizer, Phase interface
FundProject:
最有效的相容剂是两嵌段还是多嵌段聚合物?
孙大春,梁好均*
摘要:
采用Monte Carlo模拟方法研究了多嵌段聚合物在A/B/嵌段聚合物三组份体系作为相容剂使用的有效性.占总体积19%的A组份在体系中为分散相.模拟结果显示了两嵌段和多嵌段聚合物在界面上的聚集行为,以及如何影响这个不相容体系的相形为.两嵌段聚合物趋于直立在相界面上,而多嵌段聚合物更容易横跨在相界面上并占据较大的界面积.从而导致多嵌段聚合物更有效的阻止体系相分离的发生.
关键词:  Monte Carlo模拟, 相容剂, 相界面
DOI:10.1360/cjcp2006.19(3).265.4
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