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Crystallization of irradiated polyethylene |
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| Authors: | B. W. Hutzler, L. D. B. Machado, A. -L. C. H. Villavicencio,A. B. Lug o |
| Affiliation: | a EMBRARAD, R. Agostinho Togneri, 399, Jurubatuba, Sao Paulo, Brazil b Institute for Energy and Nuclear Research, c. univ. rua do Matao, trav R, 400, Sao Paulo, Brazil |
| Abstract: | This study compares the effects of radiation dose on the isothermal and non-isothermal crystallization of LLDPE, LDPE and HDPE by differential scanning calorimetry (DSC). It includes qualitative comparison of the non-isothermal data and quantitative calculations of Avrami parameters for crystallization rate and nucleation mode. The isothermal crystallization allowed the observation of the changes in the crystallization rate, related to the decrease in the crystallization temperature caused by the crosslinking of the polymer. It was also observed by the non-isothermal crystallization, the development of crystallites of very different sizes in the polymer. |
| Keywords: | Polyethylene Crystallization Irradiation Thermal analysis |
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