期刊
HIGH PERFORMANCE POLYMERS
卷 13, 期 2, 页码 S275-S292出版社
SAGE PUBLICATIONS LTD
DOI: 10.1088/0954-0083/13/2/324
关键词
-
The phase separation behaviour of block copolymers of the type (A-B), (segmented block copolymers, multiblock copolymers) containing segments with different degrees of flexibility was investigated using a stepwise variation of the incorporated blocks A and B, Amorphous/rigid blocks (polysulfone segments) were systematically combined with amorphous/flexible blocks (poly(tetramethylene glycol), semiflexible/nematic blocks (different kinds of aromatic polyesters and poly(ester imides) as well as semicrystalline fluorinated polyester blocks). All multiblock copolymers were synthesized using a conventional transesterification polycondensation in the melt and the polycondensation results are discussed. The phase separation in the synthesized block copolymers was investigated both experimentally and theoretically. Flory-Huggins interaction parameters of the block copolymers were calculated and used together with mean field calculations in order to understand the phase separation behaviour of all block copolymers correlated to their chemical structure, On the other hand, the onset of phase separation in a series of block copolymers with a systematic variation of block molecular weights was examined experimentally, mainly by DSC and SAXS, Finally, the question is discussed whether or not the degree of phase separation in the investigated systems determines the properties of the polymers or not, This is for example outlined for the mechanical properties and, in particular, the surface properties of fluorinated block copolymers.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据