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Azobisisobutyronitrile‐Initiated graft copolymerization of methyl methacrylate onto poly(ethylene terephthalate) fibers
Author(s) -
Saçak Mehmet,
Bas̆tuğ Neriman,
Talu Muzaffer
Publication year - 1993
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.1993.070500702
Subject(s) - azobisisobutyronitrile , grafting , monomer , polymer chemistry , methyl methacrylate , copolymer , yield (engineering) , materials science , ethylene , fiber , chemistry , chemical engineering , polymer , composite material , organic chemistry , catalysis , engineering
In this study, the grafting of methyl methacrylate onto poly(ethylene terephthalate) fibers using azobisisobutyronitrile is reported. An increase in temperature and monomer concentration were found to increase the graft yield. The graft yield increased up to an initiator concentration of 0.90 × 10 −2 mol/L and decreased at higher initiator concentrations. The fiber densities decreased, and fiber diameters and intrinsic viscosities increased with increasing graft yield. Moisture regain values showed a slight increase with the grafting. Fiber orientation decreased the graft yield to an important extent. The overall activation energy for grafting was calculated to be 11.9 kcal/mol. © 1993 John Wiley & Sons, Inc.