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Compatibilizing effect of isocyanate functional group on polyethylene terephthalate/low density polyethylene blends

✍ Scribed by Seong Ho Park; Kang Yeol Park; Kyung Do Suh

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
382 KB
Volume
36
Category
Article
ISSN
0887-6266

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✦ Synopsis

To evaluate the compatibilizing effects of isocyanate (NCO) functional group on the polyethylene terephthalate/low density polyethylene (PET/LDPE) blends, LDPE grafted with 2-hydroxyethyl methacrylate-isophorone diisocyanate (LDPE-g-HI) was prepared and blended with PET. The chemical reaction occurred during the melt blending in the PET/LDPE-g-HI blends was confirmed by the result of IR spectra. In the light of the blend morphology, the dispersions of the PET/LDPE-g-HI blends were very fine over the PET/LDPE blends. DSC thermograms indicated that PET microdispersions produced by the slow cooling of the PET/LDPE-g-HI blends were largely amorphous, with low crystallinity, due to the chemical bonding. The tensile strengths of the PET/LDPE-g-HI blends were higher than those of the PET/LDPE blends having a poor adhesion.

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