Grafting of acrylamide on 1,1,2,2-tetrachloroethane preswelled poly(ethylene terephthalate) films using azobisisobutyronitrile initiator


Unal H., Rostamlou M., Sanli O.

JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY, no.9, pp.1541-1560, 1998 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume: Issue: 9
  • Publication Date: 1998
  • Doi Number: 10.1080/10601329808007315
  • Title of Journal : JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY
  • Page Numbers: pp.1541-1560

Abstract

Graft polymerization of acrylamide (AAm) on 1,1,2,2 tetrachloroethane (TCE) preswelled poly(ethylene terephthalate) (PET) films were performed with chemical initiation method using asobisisobutyronitrile (AIBN) initiator. Temperature was found to have a greater effect on the swelling then the swelling time. Variation of the graft yield with polymerization temperature, time, AIBN concentration, AAm concentration, AIBN and AAm inclusion times were investigated. The optimum temperature for grafting was found to be 70 degrees C. The graft yield was observed to increase with polymerization time, AAm concentration, initiator and monomer diffusion time up to a saturation graft yield and then leveled off. An increase in AIBN concentration first enhanced the percent grafting then showed a decrease. The addition of some salts (Ni2+, Cr3+, Co2+, Cu2+) on the rate of grafting was also investigated. From the temperature dependence of the initial rate of grafting, the overall activation energy was found to be 4.1 kcal/mol and relevant rate equation have been derived. The effect of grafting on film properties, such as water absorption capacity, intrinsic viscosity were determined. Grafted films were characterized by FTIR spectroscopy and scanning electron microscopy (SEM).