In vitro synthesis of nearly ultra high molecular weight (NUHMW) polymers using solvent-water suspension method

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• 作者：Nadeem Bashir Ganaie ; Ghulam Mustafa Peerzada ; Usma Gull
• 关键词：Solvent ; water suspension polymerization ; Acrylonitrile ; Ultra high molecular weight polymers ; Radical polymerization ; Blended co ; polymer
• 刊名：Colloid and Polymer Science
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：295
• 期：1
• 页码：89-97
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Polymer Sciences; Soft and Granular Matter, Complex Fluids and Microfluidics; Characterization and Evaluation of Materials; Physical Chemistry; Food Science; Nanotechnology and Microengineering;
• 出版者：Springer Berlin Heidelberg
• ISSN：1435-1536
• 卷排序：295

文摘

An easy method for the synthesis of nearly ultra high molecular weight (NUHMW) polymers has been reported in the present investigation for the first time. The method involves the interaction of some suitable reagents of appropriate concentrations and stoichiometry through solvent-water suspension polymerization in addition to radical polymerization, leading to the formation of polymers with optimal yield and high percentage purity. The molecular weight of these polymers can be tailored by varying the acrylonitrile-water and acrylonitrile-DMF ratios, and it is found that presence/absence of sulfuric acid kept in closed conditions has some significant effect on the molecular weight of these polymers. The initiation has been found very slow under ambient conditions, but once a small amount of the material is formed, it takes only a few hours for the conversion of the bulk reaction mixture into the product and sunlight (visible region of spectrum only) shows a positive effect on the synthesis of such polymers. These polymers are of molecular weight greater than 340,000 Da and are soluble in DMSO and DMF solvents only.