Abstract
Conformational parameters of some aromatic polyimides–containing naphthalene units have been calculated by Monte Carlo method taking into consideration the hindered rotation produced by voluminous naphthalene units. Several physical properties such as solubility, glass transition temperature (T g), and initial decomposition temperature (T d) have been studied with regard to the rigidity of the chain of these polyimides. It has been shown that T g is well correlated with chain rigidity and with free volume (V fr) of the polymers, while the T d is not influenced by conformational parameters.
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