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Swelling‐assisted graft copolymerization of 4‐vinyl pyridine on poly(ethylene terephthalate) films using a benzoyl peroxide initiator
Author(s) -
Ünal Halil Ibrahim,
Şanli Oya
Publication year - 1996
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(19961121)62:8<1161::aid-app4>3.0.co;2-g
Subject(s) - benzoyl peroxide , monomer , polymer chemistry , copolymer , grafting , polymerization , dimethyl sulfoxide , materials science , ethylene , pyridine , chemistry , polymer , catalysis , organic chemistry , composite material
Graft copolymerization of 4‐vinyl pyridine (4‐VP) on poly(ethylene terephthalate) (PET) films using a benzoyl peroxide (Bz 2 O 2 ) initiator was investigated under different conditions including polymerization time, temperature, monomer concentration, and initiator concentration. Dimethyl sulfoxide (DMSO) was used as swelling agent to promote the incorporation and the subsequent polymerization of 4‐VP to PET films. Maximum percent grafting was obtained when the polymerization was carried for a period of two hours at 65°C. Increasing the monomer concentration from 0.2 M to 0.8 M and Bz 2 O 2 concentration from 1.0×10 −3 M to 2.5×10 −3 M was accompanied by a significant enhancement in percent grafting. Monomer diffusion on PET films and its effect on the grafting yield were studied and intrinsic viscosities of grafted films were also measured. © 1996 John Wiley & Sons, Inc.