Premium
Graft Polymerization of Methacrylamide onto Poly(ethylene terephthalate) Fibers with Benzoyl Peroxide as Initiator and their Characterization
Author(s) -
Ongun Nalan,
Karakışla Meral,
Aksu Levent,
Saçak Mehmet
Publication year - 2004
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200400178
Subject(s) - benzoyl peroxide , methacrylamide , polymer chemistry , grafting , monomer , polymerization , fiber , thermogravimetric analysis , materials science , thermal stability , chemistry , polymer , organic chemistry , composite material , acrylamide
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).