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Characterization and free radical polymerization of liquid crystalline acrylic acid/cellulose diacetate and N ‐vinyl‐2‐pyrrolidinone/cellulose diacetate solutions
Author(s) -
Kozakiewicz Joseph J.,
Magniess Jane E.
Publication year - 1987
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1987.070340319
Subject(s) - cellulose , polymerization , materials science , polymer chemistry , acrylic acid , polymer , radical polymerization , liquid crystal , phase (matter) , chemical engineering , monomer , chemistry , organic chemistry , composite material , optoelectronics , engineering
Polymerizations of liquid crystalline solutions of cellulose diacetate (CDA) in acrylic acid (AA) and N ‐vinyl‐2‐pyrrolidinone (NVP) were conducted in an attempt to prepare molecular composites (polymer blends) processing a rigid rod polymer with liquid crystalline orientation. CDA was found to form liquid crystalline solutions in both AA and NVP at concentrations avove 40 wt% CDA. Polymerization of anisotropic 50 wt% CDA‐AA and CDA‐NVP solutions occurred with considerable retention of the starting solution anisotropy and yielded homogeneous blends (1 T g ) when the rate of polymerization was fast relative to the phase separation of the free radically polymerizing AA or NVP with CDA. Slow polymerizations lead to phase separated blends (2 T g ).