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以棉纱和粘胶丝为试料,研究了利用硝酸铵铈为引发剂的纤维素与丙烯腈的接枝共聚。研究各种影响反应的主要参数的结果说明所研究的接聚反应比较容易进行,同时可以选择适当条件使过程中的均聚反应受到抑制。可以认为,接聚反应的发生主要是通过铈离子与纤维素作用在纤维素上生成活性中心。所研究的接聚反应受着反应溶液向纤维素渗透的影响。反应开始进行甚快,但随着接聚或均聚的聚丙烯腈在纤维素表面上生成,使渗透受到阻碍,不同纤维素材料因其精细结构的不同,其接聚反应亦分别达到不同限度。此外,尚曾对所得产品的性能作了初步鉴定。
Taking cotton yarn and viscose filament as samples, the graft copolymerization of cellulose and acrylonitrile using cerium ammonium nitrate as initiator was studied. The results of studying various main parameters affecting the reaction indicate that the polyaddition reaction studied is relatively easy to carry out and the homopolymerization reaction in the process can be suppressed by selecting appropriate conditions. It is believed that the polyaddition reaction occurs mainly by the action of cerium ions and cellulose on the cellulose to form an active center. The polyaddition reaction studied was influenced by the reaction solution to cellulose infiltration. The reaction started very rapidly, but with the polyacrylonitrile that is polycondensed or homopolymerized to form on the surface of the cellulose, the permeation is hindered. Because of the difference in the fine structure, the polyacrylonitrile has different polymerization reactions . In addition, the performance of the resulting product was initially identified.