| 核磁共振法测定苯乙烯和甲基丙烯酸正丁酯竞聚率的研究 |
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| 引用本文： | 陆志豹 朱清仁. 核磁共振法测定苯乙烯和甲基丙烯酸正丁酯竞聚率的研究[J]. 高分子学报, 1996, 0(1): 47-53 |
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| 作者姓名： | 陆志豹 朱清仁 |
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| 作者单位： | 华东理工大学高分子材料系，中国科技大学结构分析开放实验室 |
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| 摘 要： | 以苯乙烯（Ｓｔ）－甲基丙烯酸正丁酯（ＢＭＡ）共聚体系为研究对象，在共聚单体组成敏感点附近做重复实验，进行了４０、６０、８０、１００，１２０、１４０℃下的共聚合，用ＮＭＲ方法测定共聚物的组成，用Ｍａｙｏ－Ｌｅｗｉｓ微分组成方程的误差变量法计算竞聚率，同时给出竞聚率的９５％可信椭圆区间．并根据竟聚率对温度的依赖关系得到一组合理的竞聚率值．
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| 关 键 词： | 竞聚率，核磁共振法，苯乙烯，甲基丙烯酸正丁酯，自由基共聚合 |
STUDY ON MEASUREMENT OF RELATIVE REACTIVITY RATIOS OF STYRENE AND BMA BY NUCLEAR MAGNETIC RESONANCE SPECTROMETRY |
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| LU Zhibao,WU Pingping,HAN Zhewen. STUDY ON MEASUREMENT OF RELATIVE REACTIVITY RATIOS OF STYRENE AND BMA BY NUCLEAR MAGNETIC RESONANCE SPECTROMETRY[J]. Acta Polymerica Sinica, 1996, 0(1): 47-53 |
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| Authors: | LU Zhibao WU Pingping HAN Zhewen |
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| Abstract: | For the system of Styrene/n-butyl methacrylate/AIBN,copolymeizations were carried out at two sensitive feed monomer composition points by duplicate experiments at 40.60.80.100.120.140℃ respectively,The compositions of copolymer wereanalysized by NMR.The relative reactivity ratios of styrene and BMA were calculated by the error-in-variables method(EVM) of Mayo-Lowis equation,and 95% joint confidence intervals of the reactivity ratios were also given.The results were in according with the the FTIR results.The suggested reactivity ratios of St-BMA system at differenttemperature were obtained from the linear relation of measured reactivity ratios and temperatures by regression treatment |
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| Keywords: | Relativity ratios NMR Styrene BMA Radical copolymerization |
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