✦ LIBER ✦

An investigation on the modification of polypropylene by grafting of maleic anhydride based on the aspect of adhesion

✍ Scribed by Chi-Wen Lin; Wei-Lun Lee

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 128 KB
Volume: 70
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19981003)70:2<383::aid-app19>3.0.co;2-5

No coin nor oath required. For personal study only.

✦ Synopsis

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.

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