| 单体慢加入技术对超支化聚合物分子参数的影响 |
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| 引用本文： | 周志平,贾正伟,颜德岳.单体慢加入技术对超支化聚合物分子参数的影响[J].中国科学:化学,2010,40(4):336-343. |
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| 作者姓名： | 周志平 贾正伟 颜德岳 |
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| 作者单位： | ① 江苏大学材料科学与工程学院, 镇江212013
② 上海交通大学金属基复合材料国家重点实验室, 上海200240 |
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| 基金项目： | 本文得到国家自然科学基金(20774038, 50633010)资助 |
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| 摘 要： | 详细分析了单体慢加入到多官能度核分子中制备超支化聚合物的动力学过程,以单体转化率为参数导出了产物的聚合度分布函数、平均聚合度、多分散性指标和支化度等分子参数的解析式,计算结果与文献报道的实验数据十分一致.分子参数依赖于核的官能度(f)、核分数(α)和单体转化率(x),这为通过聚合反应条件来进行分子结构的设计提供了理论依据.与一步聚合方法的产物相比,单体慢加入技术能够改进产物的分子量分布,提高其支化度.
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| 关 键 词： | 超支化聚合物 动力学 分子量分布 多分散性 支化度 |
| 收稿时间： | 2009-04-17 |
| 修稿时间： | 2009-09-14 |
Effect of slow monomer addition on molecular parameters of hyperbranched polymers synthesized in the presence of multifunctional core molecules |
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| ZHOU ZhiPing,JIA ZhengWei & YAN DeYue School of Materials Science , Engineering,Jiangsu University,Zhenjiang ,China, The State Key Laboratory of Metal Matrix Composites,Shanghai Jiao Tong University,Shanghai.Effect of slow monomer addition on molecular parameters of hyperbranched polymers synthesized in the presence of multifunctional core molecules[J].Scientia Sinica Chimica,2010,40(4):336-343. |
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| Authors: | ZHOU ZhiPing JIA ZhengWei & YAN DeYue School of Materials Science Engineering Jiangsu University Zhenjiang China The State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai |
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| Institution: | ZHOU ZhiPing1,JIA ZhengWei1 & YAN DeYue2 1 School of Materials Science , Engineering,Jiangsu University,Zhenjiang 212013,China,2 The State Key Laboratory of Metal Matrix Composites,Shanghai Jiao Tong University,Shanghai 200240 |
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| Abstract: | The kinetics of slow monomer addition to multifunctional core-forming molecules in the synthesis of hyperbranched polymers was developed.Taking the conversion of monomer(x) as variable,the analytic expressions of molecular size distribution function,average degree of polymerization,polydispersity index and degree of branching were derived.These expressions are not only amenable to the polymerization with high monomer conversion,but also appropriate to describe the whole polymerization process.Comparison wit... |
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| Keywords: | hyperbranched polymer kinetics molecular weight distribution polydispersity degree of branching |
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