| 초록 |
The nonisothermal crystallization analysis of HDPE and its nanocomposites with MWCNTs provides some important information about the crystalline structures of these materials. In the present work, a modified version of Ozawa's method proposed by us was successfully applied to the analysis of DSC data for HDPE and its nanocomposites at various low cooling rates. The Avrami exponent, n, can be reasonably well determined from the nonisothermal crystallization exotherm. The POM showed that neat polyethylene possessed a well developed spherullite morphology, whereas the nanocomposites displayed elongated entities that subsequently developed as bundlelike entities. Nonisothermal analysis provides clues about the morphological development history and HDPE molecular ordering around the carbon nanotubes. |
