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A “ladder” Morphology in an ABC Triblock Copolymer
Author(s) -
Kaneko Takeshi,
Suda Kazuya,
Satoh Kotaro,
Kamigaito Masami,
Kato Toshinori,
Ono Tomohiro,
Nakamura Eiji,
Nishi Toshio,
Jinnai Hiroshi
Publication year - 2006
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200651013
Subject(s) - copolymer , morphology (biology) , materials science , polymer chemistry , styrene , transmission electron microscopy , chemical engineering , composite material , nanotechnology , polymer , genetics , engineering , biology
ABC triblock copolymers are known to exhibit a wide variety of unique types of morphologies compared to AB diblock copolymers. In the present study, poly(styrene‐block‐(ethylene‐alt‐propylene)‐block‐(methyl methacrylate)) (SEPM) triblock copolymers were synthesized and their morphologies were extensively studied by transmission electron microtomography (TEMT). In the SEPM triblock copolymer, two kinds of morphologies coexist: One was the well‐known knitting morphology, and the other was a novel morphology called the “ladder morphology”. The ladder morphology was a major morphology in the SEPM copolymer, the stability of which was discussed in terms of the interfacial area and the solubility parameters between the three components.