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Graft copolymerization of methacrylic acid onto isotactic polypropylene by radiochemical methods
Author(s) -
Kaur Inderjeet,
Misra B. N.,
Kumar Sunil
Publication year - 1998
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(19980705)69:1<143::aid-app17>3.0.co;2-0
Subject(s) - copolymer , methacrylic acid , grafting , tacticity , polymer chemistry , polypropylene , materials science , irradiation , chemical engineering , polymerization , composite material , polymer , physics , nuclear physics , engineering
Graft copolymerization of methacrylic acid onto isotactic polypropylene has been studied in water–methanol medium using γ‐rays as the source of initiation. Graft copolymerization has been conducted by (1) mutual irradiation, (2) preirradiation, and (3) double irradiation methods. All of the reaction parameters that seem to influence grafting have been studied, and the optimum conditions leading to maximum percentage of grafting have been evaluated. A plausible mechanism for radiation‐induced grafting of methacrylic acid onto polypropylene has been suggested, and the results have been explained on the basis of the proposed mechanism. A comparative study of graft copolymerization by different radiation methods has been made, and it was observed that the preirradiation method affords the best results. Evidence of grafting has been obtained from differential scanning calorimetric analysis and the dyeing behavior of the grafted material. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 69: 143–152, 1998