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Polypropylene functionalization with vinyltriethoxysilane
Author(s) -
Nachtigall S. M. B.,
Stedile F. C.,
Felix A. H. O.,
Mauler R. S.
Publication year - 1999
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(19990606)72:10<1313::aid-app11>3.0.co;2-d
Subject(s) - vinyltriethoxysilane , silane , peroxide , surface modification , polypropylene , fourier transform infrared spectroscopy , gel permeation chromatography , polymer chemistry , permeation , chemistry , materials science , oligomer , chemical engineering , organic chemistry , membrane , polymer , biochemistry , engineering
Polypropylene (PP) functionalization with vinyltriethoxysilane (VTES) was accomplished via a free radical process in a melt‐mixer chamber, using dicumyl peroxide as the initiator. Fourier‐Transform Infrared Spectroscopy (FTIR), Rutherford Backscattering Spectrometry (RBS), and gel permeation chromatography (GPC) were used to follow silane incorporation and product molecular weights. The influence of silane (0–10.0 wt %) and peroxide (0–1.0 wt %) concentrations on the functionalization degree and molecular weight of products was investigated. Chain‐breaking reactions were present in all experiments, evidenced by smaller product molecular weights. This decrease was more pronounced for higher peroxide concentrations. Silane incorporation occurred even in peroxide absence, and it was seen to increase with increasing silane concentration. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 72: 1313–1319, 1999