Amplifying (Im)perfection: The Impact of Crystallinity in Discrete and Disperse Block Co-oligomers

被引：49

作者：

van Genabeek, Bas

Lamers, Brigitte A. G.

de Waal, Bas F. M.

van Son, Martin H. C.

Palmans, Anja R. A.

Meijer, E. W. ^{[1
]}

机构：

[1] Eindhoven Univ Technol, Inst Complex Mol Syst, POB 513, NL-5600 MB Eindhoven, Netherlands

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2017年 / 139卷 / 42期

关键词：

MOLECULAR-WEIGHT ALPHA; ANGLE X-RAY; DIBLOCK COPOLYMERS; ETHYLENE-OXIDE; ROTATOR PHASES; POLYMERS; BEHAVIOR; OCTADECOXY; FUSION; PEP;

D O I：

10.1021/jacs.7b08627

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Crystallinity is seldomly utilized as part of the microphase segregation process in ultralow-molecular-weight block copolymers. Here, we show the preparation of two types of discrete, semicrystalline block co-oligomers, comprising an amorphous oligodimethyl-siloxane block and a crystalline oligo-L-lactic acid or oligomethylene block. The self-assembly of these discrete materials results in lamellar structures with unforeseen uniformity in the domain spacing. A systematic introduction of dispersity reveals the extreme sensitivity of the microphase segregation process toward chain length dispersity in the crystalline block.

引用

页码：14869 / 14872

页数：4

共 32 条

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