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Perpendicular lamellar-in-lamellar and other planar morphologies in A-b-(B-b-A)2-b-C and (B-b-A)2-b-C ternary multiblock copolymer meltsстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 26 апреля 2016 г.
- Авторы: Markov V., Kriksin Y., Erukhimovich I., Brinke G.ten
- Журнал: Journal of Chemical Physics
- Том: 139
- Год издания: 2013
- Издательство: AIP Publishing
- Местоположение издательства: United States
- Первая страница: 084906
- DOI: 10.1063/1.4818872
- Аннотация: Ordered planar morphologies in A-b-(B-b-A)2-b-C and (B-b-A)2-b-C terpolymer melts are studied within the framework of the self-consistent field theory for volume fractions of components A, B, and C in the ratio 1:1:2 and the Flory-Huggins interaction parameters satisfying χAB = 2χAC. The stable phases turn out to be the disordered, hexagonal, parallel lamellar-in-lamellar L (including the simple lamellar) as well as non-shifted and shifted (L⊥ and SL⊥) perpendicular lamellar-in-lamellar morphologies. Depending on the value of the ratio r = AB/BC, where is a characteristic temperature of the units involved, different sequences of phase transitions are shown to occur. The hexagonal phase is characteristic for r∼=1. The L⊥ and SL⊥ morphologies occur at weak and intermediate segregations whereas the L morphology appears for stronger degrees of segregation. For (B-b-A)2-b-C a reduction in r favors the shifted SL⊥ phase over the non-shifted L⊥ one, whereas for A-b-(B-b- A)2-b-C we find re-entrant phase transitions SL⊥ − L⊥. The physics determining the particular phase behavior is discussed.
- Добавил в систему: Ерухимович Игорь Яковлевич