Citation: LI Guizhi, SHI Lianghe, YE Meiling, ZHAO Chuntian, XU Mao. TRANSESTERIFICATION IN POLYPHENYLSILSISQUIOXANE (PPSQ)/POLY ETHYLENE TEREPHTHALATE (PET) BLENDS*[J]. Chinese Journal of Polymer Science, ;1995, 13(4): 366-374. shu

TRANSESTERIFICATION IN POLYPHENYLSILSISQUIOXANE (PPSQ)/POLY ETHYLENE TEREPHTHALATE (PET) BLENDS*

LI Guizhi ^{**，施良和} ,
SHI Lianghe ,
YE Meiling ,
ZHAO Chuntian ,
XU Mao

Received Date: 12 January 1994

The chemical structure of copolymer formed in the transesterification of PPSQ/PET blendsduring melt-processing is deduced from the 1H-NMR spectra. The transesterification extent ofthis blend is interpreted by the changes of crystalline melting peak in DSC thermograms of the in-soluble products containing unreacted PET and some block PPSQ segments. Effects of composi-tion of blend ladderlike regularity of PPSQ on the reaction extent have also been discussed.Inclusion of some block PPSQ segments in PET has no influence on the crystalline morphology of PET.
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