Polymer crystallization diffusion-controlled mechanism

C02-induced crystallization of polymers presents a unique, tunable degree of morphological control of the polymeric matrix, as revealed by CRM. Control over the operating conditions enables control of the diffusivity of CO2 combined with control over the kinetics of crystalhzation. This degree of control enables the distribution of morphological changes in the polymer to be tailored, which may facilitate the formation of novel materials with a skin-core morphology with possible unique mechanical properties. 

Crystallization plays a major role in determining the thermal and mechanical behavior of polymers as it permits polymers to retain rigidity at temperatures exceeding the Tg. Crystallization also enhances the barrier properties and solvent resistance, as small molecules cannot diffuse through crystalline domains. Crystallization of polymers can be tuned, and thus can provide very usefiil control over... 

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