Citation:
YU Feng-Yuan, XIAO Han-Wen, XU Bing, HUANG Shi-Qiang. Modification of LDPE by Grafting[J]. Chinese Journal of Applied Chemistry,
;2005, 22(7): 796-799.
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Via the melt-grafted reaction of low density polyethylene (LDPE) with multimonomer,we successfully introduced Glycidyl methylacrylate and Styrene onto the macromolecular chain of LDPE.The grafting degree of gLDPE reached to 3% approximately.Two analytic methods were employed to study the different processes of the non-isothermal crystallization for LDPE and gLDPE.Crystal of the grafted LDPE was observed by means of a polarized optical microscope.The investigation showed that compared to that of LDPE,the crysallization temperature (Tc) of gLDPE has shifted to higher temperature slightly and the range of crystallization temperature has become wider.The exponent n of Avrami equation was about 4,indicating that gLDPE and LDPE have a similar model of non-isothermal crystallization.
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Keywords:
- LDPE,
- GMA,
- non-isothermal crystallization
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