关于结冷胶与N，N-二甲基丙烯酰胺通过氧化还原体系进行接枝共聚反应的研究。
Studies on graft copolymerization of gellan gum with N,N-dimethylacrylamide by the redox system.
作者信息
Pandey Vijay Shankar, Verma Shiv Kumar, Yadav Mithilesh, Behari Kunj
机构信息
Polymer Science Research Laboratory, Department of Chemistry, University of Allahabad, Allahabad 211002, India.
Polymer Science Research Laboratory, Department of Chemistry, University of Allahabad, Allahabad 211002, India.
出版信息
Int J Biol Macromol. 2014 Sep;70:108-15. doi: 10.1016/j.ijbiomac.2014.06.043. Epub 2014 Jun 28.
The present paper reports the graft copolymerization of N,N-dimethylacrylamide onto gellan gumby free radical polymerization using potassium peroxymonosulphate/sarbose redox system in an inert atmosphere. The reaction conditions for maximum grafting have been optimized by varying the reaction variables, including the concentration of N,N-dimethylacrylamide(4.0×10(-2)-20×10(-2) mol dm(-3)), potassium peroxymonosulphate (0.6×10(-2)-1.4×10(-2)mol dm(-3)), sarbose (0.4×10(-3)-3.6×10(-3) mol dm(-3)), sulphuric acid (2.0×10(-3)-10×10(-3) mol dm(-3)), gellan gum (0.6-1.4 g dm(-3)) along with time duration (60-180 min) and temperature (25-45°C).Water-swelling capacity, metal ion sorption and flocculation studies of synthesized graft copolymer have been performed with respect to the parent polymer. The graft copolymer has been characterized by FTIR spectroscopy and thermogravimetric analysis.
本文报道了在惰性气氛中，使用过氧单硫酸钾/山梨糖氧化还原体系，通过自由基聚合将N，N-二甲基丙烯酰胺接枝到结冷胶上的反应。通过改变反应变量，包括N，N-二甲基丙烯酰胺的浓度（4.0×10⁻² - 20×10⁻² mol dm⁻³）、过氧单硫酸钾（0.6×10⁻² - 1.4×10⁻² mol dm⁻³）、山梨糖（0.4×10⁻³ - 3.6×10⁻³ mol dm⁻³）、硫酸（2.0×10⁻³ - 10×10⁻³ mol dm⁻³）、结冷胶（0.6 - 1.4 g dm⁻³）以及反应时间（60 - 180分钟）和温度（25 - 45°C），对最大接枝反应条件进行了优化。针对母体聚合物，对合成的接枝共聚物进行了水溶胀能力、金属离子吸附和絮凝研究。通过傅里叶变换红外光谱（FTIR）和热重分析对接枝共聚物进行了表征。
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