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Functionalization and cross‐linking of high‐density polyethylene in the presence of dicumyl peroxide—An FTIR study
Author(s) -
Anbarasan R.,
Babout O.,
Dequiel M.,
Maillard B.
Publication year - 2005
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/app.21343
Subject(s) - surface modification , saponification , grafting , fourier transform infrared spectroscopy , polymer chemistry , peroxide , hydrogen peroxide , chemistry , free radical reaction , hydrolysis , polyethylene , organic peroxide , chemical modification , organic chemistry , chemical engineering , radical , polymer , copolymer , engineering
High‐density polyethylene was thermolysed with short‐chain organic compounds (additives) with an ester functional group in the presence of free radical initiator such as dicumyl peroxide at 160°C. The experimental results inferred that an additive with a hydrogen donor containing a thiol group showed better efficiency toward functionalization and an additive with a methylene bridged group showed better efficiency toward cross‐linking. The FTIR spectral results indicated that the area of the carbonyl peak at 1730 cm −1 increased with the increase in percentage grafting of additives with simultaneous increase of cross‐linking. The ester grafting was further confirmed by saponification reaction. The possibility of acid functionalization via intramolecular hydrogen transfer was also checked through acid hydrolysis of the saponified products. A suitable reaction mechanism was proposed in order to explain the experimental and spectral data obtained. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 766–774, 2005