Functionalized multi-walled carbon nanotubes improve nonisothermal crystallization of poly(ethylene terephthalate)
- 作者：Yao Gao ; Yong Wang ; Jing Shi ; Hongwei Bai ; Bo Song
- 关键词：Functionalized MWCNTs ; Poly(ethylene terephthalate) ; Nonisothermal crystallization
- 刊名：Polymer Testing
- 出版年：2008
- 期刊代码：143_01429418
- 类别：et
- 出版时间：April 2008
- 卷：27
- 期：2
- 页码：179-188
- 文件大小：610 K
摘要
In this work, multi-walled carbon nanotubes were successfully chemically modified by maleic anhydride (f-MWCNTs), and the f-MWCNTs were melt compounded with poly(ethylene terephthalate) (PET) by using a twin-screw extruder to prepare nanocomposites. The effects of f-MWCNTs on the crystallization behavior of PET nanocomposites were studied via DSC and POM. The results show the apparent nucleation effect of f-MWCNTs in PET crystallization. The cold-crystallization peak temperature decreases with the increase of f-MWCNTs during the heating process. On the other hand, the addition of f-MWCNTs can greatly enhance the melt-crystallization peak temperature of PET when it is cooled from the melt. The nonisothermal crystallization kinetics of PET with f-MWCNTs was analyzed by different methods and the results also prove that the f-MWCNTs clearly accelerate the crystallization process of PET.