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Keywords Schiff base;Chiral vinyl monomer;p-Terphenyl group;Free radical polymerization;Optically active polymer;Helical conformation; 席夫碱;手性烯类单体;对三联苯;自由基聚合;光学活性高分子;螺旋构象;
Chiral vinyl monomer 手性烯类单体
The tacticity of polymers is mainly influenced by the polarity of substituent group of vinyl monomer. 作者认为影响聚合物等规度的因素主要是取代基的极性效应。
Polymer surfactants of poly(vinyl alcohol)(PVA)are used as emulsifier in vinyl monomer emulsion polymerization and dispersent in VC suspension polymerization. 聚乙烯醇(PVA)系高分子表面活性剂,可用作乙烯基单体乳液均聚或共聚的乳化剂和氯乙烯(VC)悬浮聚合的分散稳定剂。
Experiment results show that with increasing content of vinyl monomer,stability of PUA,film and breaking elongation decreased,the hardness and water-resistance increased. 研究了单体含量对共聚乳液性能的影响,结果表明:随着乙烯基单体含量的增加,乳液颜色加深,稳定性下降;胶膜的断裂伸长率降低,硬度和耐水性增加。
N-vinylformamide (NVF) is a functional vinyl monomer which easily forms water soluble or hydrophilic polymers with high molecular weight by radical polymerization. 因此螯合纤维可以用于污水的处理、金属离子及贵金属的分离与富集、痕量元素的回收、分析等方面。
Composite latex consited of polyacrylate-polyurethane was prepared with aqueous polyurethane emulsion,methyl methacrylate and butyl acrylate as vinyl monomer by soap-free seed emulsion polymerization. 以水性聚氨酯为种子乳液,甲基丙烯酸丁酯和甲基丙烯甲酯为单体,采用乳液聚合法制备丙烯酸酯-聚氨酯乳液。
When suspention polymerization was used in the preparation of the toner which is used in electrophotography,carbon black remarkablly inhibited the polymerization of vinyl monomer in the system. 用悬浮聚合法制备静电复印用增色剂时，着色剂炭黑在反应体系中具有明显的阻聚作用。
With many polymers the molecular weight of the structural unit is equal to the molecular weight of the monomer, e.g. with all vinyl monomers. 对许多聚合物，例如对所有的乙烯基单体的聚合物来说，结构单元的分子量等于单体的分子量。
Vinyl monomer as coupling agent for SSBR 乙烯基化合物偶联溶聚丁苯橡胶的研究
A reactive microgel emulsion has been developed by polymerization unsaturated polyester and/or vinyl monomers and tetrapropylene glycol diacrylate as cross - linkable monomer. 采用三缩丙二醇二丙烯酸酯作为交联单体,与不饱和聚酯和/或乙烯系不饱和单体乳液聚合,合成了反应性微凝胶乳液。
The development of novel materials continuously demands vinyl monomers that are synthetically accessible and easy to derivatize. 新型材料的不断发展;要求乙烯单体综合无障碍、易于衍生物.
The kinetic equation of photopolymerization of vinyl monomers with this photoinitiator,molecular weight and distribution have been measured. 测定了光聚合的动力学方程以及聚合物的分子量和分子量分布。
The RAFT radical polymerization of non-conjugated vinyl monomers and conjugated vinyl monomers mediated by xanthate are reviewed in this paper. 本文综述了以黄原酸酯为链转移剂进行的共轭乙烯基单体与非共轭乙烯基单体的RAFT自由基聚合研究进展。
Abstract: The RAFT radical polymerization of non-conjugated vinyl monomers and conjugated vinyl monomers mediated by xanthate are reviewed in this paper. 摘要: 本文综述了以黄原酸酯为链转移剂进行的共轭乙烯基单体与非共轭乙烯基单体的RAFT自由基聚合研究进展。
Study on Vinyl Monomer Modified Waterborne polyurethane 乙烯基单体改性水性聚氨酯的研究
GRAFTING COPOLYMERIZATION OF VINYL MONOMER ONTO MODIFIED STARCH 改性淀粉与乙烯基单体的接枝共聚反应
E.D.T.A.;Vinyl monomer;chelate;acrylic acid;methyl acrylate 关键词:乙二胺四乙酸;乙烯系单体;螯合;丙烯酸;丙烯酸甲酯
In this article by copolymerization of VAc and other vinyl monomers, the effects of PVA on the properties of the PVAc emulsion were discussed through many tests such as TEM, DSC and so on. 研究利用醋酸乙烯酯与其它烯类单体共聚,并在此基础上通过TEM、DSC等多种表征手段分析了不同醇解度的聚乙烯醇对聚醋酸乙烯乳液性能产生的影响。
Normal initiators used for graft polymerization of vinyl monomers on starch are reviewed with 21 references. The characterization, initiating mechanism and the application of initiators are discussed. 总结了近年来淀粉与乙烯基单体接枝共聚的常用引发剂，对引发剂的性质、优缺点、引发机理及应用作了评述，引用最新文献21篇。