Synthesis and assessment of the effect of monomer feed ratio and Lewis acids on copolymerization of butyl methacrylate/1-octene

This study was designed to investigate the effect of molar ratio of 1-octene and type as well as concentration of Lewis acids on the free radical copolymerization of butyl methacrylate (BMA) with 1-octene. The synthesized copolymers have been substantially described by FTIR, 1H NMR, GPC and DSC. The...

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Bibliographic Details
Published inPolyolefins journal Vol. 9; no. 2; pp. 85 - 91
Main Authors Mohammad Jozaghkar, Seyed Mehrdad Jalilian, Farshid Ziaee
Format Journal Article
LanguageEnglish
Published Iran Polymer and Petrochemical Institute 01.07.2022
Subjects
1-octene
butyl methacrylate
copolymerization
lewis acid
monomer incorporation
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Summary:This study was designed to investigate the effect of molar ratio of 1-octene and type as well as concentration of Lewis acids on the free radical copolymerization of butyl methacrylate (BMA) with 1-octene. The synthesized copolymers have been substantially described by FTIR, 1H NMR, GPC and DSC. The quantitative 1H NMR and GPC demonstrated that by increase in the molar ratio of 1-octene and Lewis acids to BMA, the incorporation of 1-octene in the copolymer backbone enhanced, Mn reduced and polydispersity became narrower. The maximum incorporation of 1-octene (13.7%) was observed for sample CSC7 having [1-octene/BMA] of 3 mol% and [AlCl3/BMA] of 1.5 mol%. The DSC results confirmed the NMR and GPC outcomes, suggesting a decrease in Tg by increasing 1-octene in the copolymer backbone. Moreover, it is found that temperature has a remarkable influence on the copolymerization behavior. The results also showed that by substituting the acrylate monomer from butyl methacrylate to butyl acrylate, the incorporation of 1-octene increased.
ISSN:2322-2212
2345-6868
DOI:10.22063/poj.2022.3062.1207