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An investigation on the modification of polypropylene by grafting of maleic anhydride based on the aspect of adhesion
Author(s) -
Lin ChiWen,
Lee WeiLun
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(19981003)70:2<383::aid-app19>3.0.co;2-5
Subject(s) - maleic anhydride , grafting , polypropylene , materials science , tacticity , adhesive , composite material , polymer chemistry , chemical modification , polymer science , polymer , copolymer , polymerization , layer (electronics)
Isotactic polypropylene was modified by a chemical grafting of maleic anhydride in a molten state. The degree of grafting, ranged from 0.078–0.368%, was determined by a titration method. Isotactic polypropylene modified by chemical grafting of maleic anhydride was used as an adhesive in bonding the cold‐rolled steel sheets for the correlation of its bondability. It was found that the maximum adhesive strength 159 kg/cm 2 was obtained from a degree of grafting 0.217%. A higher degree of grafting was detrimental not only to the initial adhesive strength, but also to the durability aged in a wet environment. Electron spectroscopy for chemical analysis was used to analyze the failure loci, because the joint was separated by shearing. © 1998 John Wiley & Sons, Inc. J. Appl. Polym. Sci. 70: 383–387, 1998