摘要
纤维素是具有生物可降解、来源丰富和环境友好等优点的可再生生物质资源。然而由于分子间的氢键的存在,导致了纤维素不溶于水和常见的有机溶剂,溶解性差的缺点限制了纤维素在诸多领域的应用。利用天然棉浆纤维素作为原料与2-溴-2-甲基丙酰溴反应提供活性位点合成大分子引发剂,通过原子转移自由基聚合(ATRP)的方法接枝上柔性链长短不同的乙烯基类单体来制备纤维素接枝改性共聚物。通过溶解性能测试表明所制备的产物相比于纯的纤维素具有较好的溶解性,可以在常见的有机溶剂中溶解。
Cellulose is the most abundant biological organic raw material on earth,with the rich sources,biodegradable and environmentally friendly advantages.However,due to the existence of intramolecular and intermolecular hydrogen bonds,cellulose is insoluble in water and common organic solvents.The poor solubility limits the application of cellulose in many fields.cellulose was used as raw material to react with 2-bromo-2-methylpropionyl bromide to prepare macromolecular initiator,and cellulose graft copolymers with different branched chain structures were prepared by the method of atomic transfer radical polymerization technique(ATRP).The solubility tests show that the sampes have good solubility than pure cellulose and can dissolve in common organic solvents.
作者
李葱葱
Li Congcong(Tianjin Key Laboratory of Advanced Fiber and Energy Storage,State Key Laboratory of Separation Membranes and Membranes Processes,School of Material Science and Engineering,Tianjin Polytechnic University,Tianjin 300387,China)
出处
《山东化工》
CAS
2019年第9期6-9,共4页
Shandong Chemical Industry
基金
国家自然科学基金资助项目(51373118)
天津市自然基金重点项目(18JCZDJC38300)
