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徐卫兵, Xu Weibing a, b, He Pingsheng a, *, Chen Dazhu a
W.B. Xu et al./European Polymer Journal 39(2003)617-625,-0001,():
-1年11月30日
at lower temperature (<90℃) and decreases to 2 as the temperature increases. The addition of Org-MMT has no obvious effect on the apparent activation energy of the cure reaction. There is no special curing process required for the formation of an epoxy resin/Org-MMT/imidazole intercalated nanocomposite.
Epoxy resin, Montmorillonite, Nanocomposite, Cure, Gel time, Avrami equation
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【期刊论文】Preparation and characterization of PE and PE-g-MAH/montmorillonite nanocomposites
徐卫兵, Hongbo Zhai a, Weibing Xu a, b, *, Hanyang Guo a, Zhengfa Zhou a, Shijun Shen a, Qiusheng Song a
H. Zhai et al./European Polymer Journal 40(2004)2539-2545,-0001,():
-1年11月30日
Polyethylene (PE) was chemically modified with grafting maleic anhydride (MAH) monomer on its backbone at first. Then the melt-direct intercalation method was employed to prepare two kinds of nanocomposites, polyethylene (PE)/organic montmorillonite (Org-MMT) and maleic anhydride grafted polyethylene (PE-g-MAH)/Org-MMT nanocomposites. X-ray diffractometery (XRD) was used to investigate the intercalation effect and transmission electron microscopy (TEM) to observe the dispersion of Org-MMT interlayers in matrixes. The results show that an intercalated structure would be acquired on mixing the PE and Org-MMT; and an almost exfoliated system would be obtained by mixing the PE-g-MAH and Org-MMT. Moreover, further measurements via thermogravimetric (TGA) and differential scanning calorimetry (DSC) showed that both of the nanocomposites had a higher thermal decomposition temperature and a higher crystallization temperature when compared to the original matrix. At the same time, the thermal and crystal properties for the PE-g-MAH prepared in this experiment are also discussed.
Polyethylene, Graft, Montmorillonite, Nanocomposites
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