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?GRAFT COPOLYMERISATION OF ACRYLONITRILE ON TO POLYVINYL ALCOHOL

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Title: ?GRAFT COPOLYMERISATION OF ACRYLONITRILE ON TO POLYVINYL ALCOHOL

Authors: A. RASHEED KHAN, SHABlH-UL HASAN, A.F.K. IFRAHIM, A.H.K. YOUSUFZAI

Journal: Pakistan Journal of Scientific and Industrial Research (Series B: Biological Sciences)

HEC Recognition History
Category From To
Y 2023-07-01 2024-09-30
Y 2022-07-01 2023-06-30
Y 2021-07-01 2022-06-30
Y 2020-07-01 2021-06-30
Y 1900-01-01 2005-06-30

Publisher: PCSIR Scientific Information Centre

Country: Pakistan

Year: 1995

Volume: 38

Issue: 5-6

Language: English

Keywords: Grafting efficiency,Mutualterminationof radicals. Highenergy irradiation.

Categories
Physical Chemistry (230) Chemical Engineering (4680) Radiation Chemistry (21) Materials Science (8025) Polymer Chemistry (300)

Abstract

Acrylonitrile (AN) has been graft polymerised on to polyvinyl alcohol (PYA) in aqueous medium using potassium persulfate as an initiator.The grafting wascharacterisedby elemental analysis,solubility,I.R.and intrinsic viscosity measurements. The rate of conversion of monomer.rateof graftcopolymerisation (Rg), grafting ratio (GR) increased with increasing concentration of AN and decreased with increasing toncentration of PYA. Increase in catalytic concentration was foundtoincreaserateofconversionofmonomer RgandGr.SomePYAisleftunturned by growing polymer chain of PANwhich increases with increasing concentration of AN PYAor potassium persulfate. TheeffectsofconcentrationofAN. PYAandpotassiumpersulfateonGR.Rg,rateofconversionof monomerand PYA used in grafting (PG) were studied.

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