Premium
Kinetically Controlled Phase Transitions in Side Chain Liquid Crystalline Polymers
Author(s) -
Kozlovsky M. V.
Publication year - 2001
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/1521-4079(200110)36:8/10<1083::aid-crat1083>3.0.co;2-o
Subject(s) - differential scanning calorimetry , mesophase , phase transition , polymer , side chain , materials science , copolymer , kinetics , annealing (glass) , thermodynamics , polymorphism (computer science) , polymer chemistry , phase (matter) , crystallography , chemistry , organic chemistry , physics , composite material , biochemistry , quantum mechanics , gene , genotype
The kinetics of phase transitions in side chain liquid crystalline homo‐ and copolymers is studied using differential scanning calorimetry. For the most cases, the Avrami treatment of kinetic curves gives evidence of diffusion‐controlled mesophase formation while a crossover to free two‐dimensional phase growth has been observed for a smectic copolysiloxane. All the polymers show a linear increase in transition temperatures upon annealing temperature but a corresponding decrease in transition enthalpies. Application of the “slow” phase transitions to the photorecording in dyed copolymers is discussed.