期刊
JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS
卷 49, 期 6, 页码 1094-1104出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/00222341003641651
关键词
multiwalled carbon nanotubes; nonisothermal crystallization kinetics; polypropylene
资金
- Scientific Research Foundation for the Returned Overseas Chinese Scholars
- State Education Ministry
- Shanghai Leading Academic Discipline Project [B603]
- Programme of Introducing Talents of Discipline to Universities [111-2-04]
- Natural Science Foundation of Shanghai, China [09ZR1401500]
Polypropylene/multiwalled carbon nanotubes (PP/MWNTs) nanocomposites were prepared by a melt compounding process. The morphology and nonisothermal crystallization of these nanocomposites were investigated by means of optical microscopy, scanning electron microscopy, and differential scanning calorimetry. Scanning electron microscope micrographs of PP/MWNTs composite showed that the MWNTs were well dispersed in the PP matrix and displayed a clear nucleating effect on PP crystallization. Avrami theory, modified by Jeziorny and Mo's method, was used to analyze the kinetics of the nonisothermal crystallization process. It was found that the addition of MWNTs improved the crystallization rate and increased the peak crystallization temperature of the PP/MWNTs nanocomposites as compared with PP. The results show that the Jeziorny theory and Mo's method successfully describe the nonisothermal crystallization process of PP and PP/MWNTs nanocomposites.
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