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Micro‐composite systems by in‐situ formation of liquid crystal polymers in commodity polymers
Author(s) -
An Jeongwoong,
Ichikawa Tsuneko,
Ogata Naoya
Publication year - 1995
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.19950960109
Subject(s) - copolymer , styrene , materials science , polymer , polymer chemistry , polymerization , in situ polymerization , moiety , chemical engineering , composite number , composite material , organic chemistry , chemistry , engineering
In‐situ formation of polyimide was carried out in solution of copolymers derived from styrene and 4‐vinylpyridine. The in‐situ formed polyamic acid formed a strong hydrogen‐bonding with pyridine moiety of the copolymers, resulting in homogeneous solutions. Cast films obtained from the solutions were clear and transparent without phase separations, and mechanical properties of the films were much stronger than those of films from the original copolymers. In‐situ polymerization of acrylamide in poly(styrene) was carried out by anionic polymerization to form Nylon 3 which was dispersed in poly(styrene) as fine particles, and mechanical properties of the poly (styrene) were greatly improved.