Microphase separation at two length scales
Microphase separation at two length scales
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DOI：
10.1007/s101890170106
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发表时间：
2001-04
期刊：
影响因子：
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通讯作者：
Rikkert J. Nap;C. Kok;G. Brinke;S. Kuchanov
中科院分区：
文献类型：
--
作者：
Rikkert J. Nap;C. Kok;G. Brinke;S. Kuchanov
The possibility of microphase separation at two different length scales in monodisperseABblock copolymer melts consisting of a homopolymerAblock and either a linear alternatingABcopolymer block (poly(A)m-block-poly(B-alt-A)n) or anABcomb copolymer block poly(A)m-block-poly(A-graft-B)n, is investigated. An analysis of the structure factor reveals that in the parameter space ofnandmthree different cases can be distinguished: I) The structure factor has only one minimum corresponding to the short length scale (i.e.the characteristic length of the repeating unit of the alternating or comb block). II) The structure factor has only one minimum corresponding to the long length scale (the characteristic length of the blocks). III) Two minima are present leading to a competition between microphase separation at the short and the long length scale. Depending on the choice ofnandm, one of these three possibilities will occur.
