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Abstract <p>An optically transparent copolymer based on methyl 2-(4-vinylphenyl)cyclopropane-1 carboxylate and butyl methacrylate has been synthesized. The copolymerization of these monomers has been carried out in the presence of a radical initiator in the mass and solution. The copolymerization constants (<i>r</i><sub>1</sub> = 0.68, <i>r</i><sub>2</sub> = 0.32) and activity parameters according to <i>Q</i>–<i>e</i> scheme (<i>Q</i><sub>1</sub> = 1.06; <i>e</i><sub>1</sub> = –1.0) have been calculated. The microstructure of the copolymer has been studied; at a ratio of the initial compounds equal to 0.25 : 0.25 (molar fractions), the blockiness parameter has a maximum value of <i>R</i> = 66.66%. The indices of the average molecular weights of the copolymer samples obtained under various copolymerization conditions vary in the ranges <i>M</i><sub>w</sub> = 97000–127500 and <i>M</i><sub>n</sub> = 64500–95200. The identification of the obtained compound by a method of IR and <sup>1</sup>H NMR spectroscopy has been carried out, and the physical-mechanical properties have been evaluated. The degree of optical transparency <i>n</i><sub><i>D</i></sub><sup>20</sup> = 1.5792 and light transmission of the copolymer has been determined (88–90%).</p>

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Synthesis and Study of the Properties of an Optically Transparent Copolymer Based on Methyl 2-(4-Vinylphenyl)cyclopropane-1 Carboxylate and Butyl Methacrylate

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • S. B. Mamedli,
  • M. M. Mustafayev,
  • A. G. Rahimli,
  • D. R. Nurullayeva,
  • R. V. Asadov

摘要

Abstract

An optically transparent copolymer based on methyl 2-(4-vinylphenyl)cyclopropane-1 carboxylate and butyl methacrylate has been synthesized. The copolymerization of these monomers has been carried out in the presence of a radical initiator in the mass and solution. The copolymerization constants (r1 = 0.68, r2 = 0.32) and activity parameters according to Q–e scheme (Q1 = 1.06; e1 = –1.0) have been calculated. The microstructure of the copolymer has been studied; at a ratio of the initial compounds equal to 0.25 : 0.25 (molar fractions), the blockiness parameter has a maximum value of R = 66.66%. The indices of the average molecular weights of the copolymer samples obtained under various copolymerization conditions vary in the ranges Mw = 97000–127500 and Mn = 64500–95200. The identification of the obtained compound by a method of IR and 1H NMR spectroscopy has been carried out, and the physical-mechanical properties have been evaluated. The degree of optical transparency nD20 = 1.5792 and light transmission of the copolymer has been determined (88–90%).