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Graft Polymerization of Methacrylamide onto Poly(ethylene terephthalate) Fibers with Benzoyl Peroxide as Initiator and their Characterization

✍ Scribed by Nalan Ongun; Meral Karakışla; Levent Aksu; Mehmet Saçak

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
166 KB
Volume
205
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Summary: The effects of polymerization temperature and time, initiator and monomer concentrations, ratio of water and solvent employed on the grafting of methacrylamide onto poly(ethylene terephthalate) fibers by the use of benzoyl peroxide initiator were studied. The graft yield was observed to increase with temperature and monomer concentration. The highest graft yield was obtained with an initiator concentration of 1 × 10^−2^ mol/L. The rate of grafting was proportional to the power 0.48 and 1.6 of the methacrylamide and benzoyl peroxide concentrations, respectively. The overall activation energy for grafting calculated was 42.8 kcal/mol. The thermogravimetric data revealed that the thermal stability of poly(ethylene terephthalate) fibers decreased with grafting.

SEM micrographs of ungrafted PET fiber (a) and 44.9% MAAm‐grafted fiber (b).

magnified imageSEM micrographs of ungrafted PET fiber (a) and 44.9% MAAm‐grafted fiber (b).

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