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Polymer blends with modified coupling agent. I. Preparation and thermal properties of LICA 44 grafted styrene–maleic anhydride copolymer
Author(s) -
Chiang WenYen,
Hu ChiaHao
Publication year - 1998
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19980404)68:1<37::aid-app4>3.0.co;2-o
Subject(s) - maleic anhydride , copolymer , polymer chemistry , materials science , imide , styrene , amide , polymer , fourier transform infrared spectroscopy , chemistry , chemical engineering , organic chemistry , composite material , engineering
Neopentyl(diallyl)oxy, tri( N ‐ethyleneamino)ethyl titanate (LICA 44) was grafted to the styrene/maleic anhydride (SMA) copolymer for the purpose of obtaining a new interfacial coupling agent for flame retardant ABS blends. The graft reaction was proceeded in DMSO under 80°C and reduced pressure. Samples were prepared under various amine/anhydride ratios (AAR) in feed and reaction time. The verification of reaction was based on FTIR spectra and the results of elemental analysis. The reaction percentages were high but decreased with the rising AAR. Both combination types, amide acid and imide, of SMA and LICA 44 were found, and the ratio of amide acid and imide is related to the AAR and reaction time. After the graft reaction, both the initial pyrolysis temperature ( T pi ) and the char yield at 800°C of SMA increased significantly. LICA 44 is believed to cause the char promoting effect on SMA‐ g ‐L44. And the dealcohol phenomenon of trimethylolpropane diallyl ether (TMPDE) away from SMA‐ g ‐L44 was observed during the thermal analysis. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 68:37–44, 1998