Synthesis and assessment of the effect of monomer feed ratio and Lewis acids on copolymerization of butyl methacrylate/1-octene
| Autor: | Mohammad Jozaghkar, Seyed Mehrdad Jalilian, Farshid Ziaee |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Polyolefins Journal, Vol 9, Iss 2, Pp 85-91 (2022) |
| Druh dokumentu: | article |
| ISSN: | 2322-2212 2345-6868 |
| DOI: | 10.22063/poj.2022.3062.1207 |
| Popis: | 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. |
| Databáze: | Directory of Open Access Journals |
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