Polymer crystallization |
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Authors: | J A Martins J J C Cruz-Pinto M J Oliveira |
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Institution: | 1. Centro de Quimica Pura e Aplicada, CQPA (Inic), Department of Polymer Engineering, Universidade do Minho, 4719, Braga Codex, Portugal
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Abstract: | Differential scanning calorimetry (dual furnace, null-balance, DSC) and optical microscopy (OM) have been used to study the isothermal crystallization kinetics of poly(oxymethylene)-POM. The non-isothermal crystallization of the same material has also been studied by optical microscopy. A very controversial problem is whether the isothermal kinetic parameters may be applied to describe the non-isothermal crystallization. The results show that the kinetic spherulite growth parameters obtained by non-isothermal optical microscopy are, within the experimental errors involved, the same as those obtained by isothermal optical microscopy or isothermal DSC. The importance of this finding is highlighted. |
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