CAJ | 학술논문

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.
채용Monte Carlo모의방법연구료다감단취합물재A/B/감단취합물삼조빈체계작위상용제사용적유효성.점총체적19%적A조빈재체계중위분산상.모의결과현시료량감단화다감단취합물재계면상적취집행위,이급여하영향저개불상용체계적상형위.량감단취합물추우직립재상계면상,이다감단취합물경용역횡과재상계면상병점거교대적계면적.종이도치다감단취합물경유효적조지체계상분리적발생.
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.