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首页> 外文期刊>Journal of Applied Polymer Science >Water-soluble grafted polysaccharides containing sulfobetaine groups: Synthesis and characterization of graft copolymers of hydroxyethyl cellulose with 3-dimethyl(methacryloyloxyethyl)ammonium propane sulfonate
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Water-soluble grafted polysaccharides containing sulfobetaine groups: Synthesis and characterization of graft copolymers of hydroxyethyl cellulose with 3-dimethyl(methacryloyloxyethyl)ammonium propane sulfonate

机译：含磺基甜菜碱基团的水溶性接枝多糖：羟乙基纤维素与3-二甲基（甲基丙烯酰氧基乙基）丙烷磺酸铵的接枝共聚物的合成与表征

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摘要

New water-soluble grafted polysaccharides containing sulfobetaine groups were synthesized by the grafting of the sulfobetaine-type zwitterionic monomer 3-dimethyl-(methacryloyloxyethyl)ammonium propane sulfonate (DMAPS) onto hydroxyethyl cellulose (HEC) in the presence of a ceric ammonium nitrate (CAN)/ethylenediaminetetraacetic acid (EDTA) initiation system. The effects of the concentrations of CAN, EDTA, DMAPS, and HEC, as well as the polymerization time and temperature, on the grafting reactions were investigated in terms of the grafting percentage (%GP) and grafting conversion (%GC) of the monomer. The %GP and %GC increased and then decreased with increasing concentrations of CAN, EDTA, and HEC. The %GP and %GC increased with increasing DMAPS concentration up to a certain value, beyond which the %GP did not significantly increase and the %GC decreased. The appropriate polymerization time and temperature were favorable for the grafting reactions. With infrared, thermogravimetric analysis, and viscosity measurements, the resulting grafted polysaccharides were characterized. (C) 2002 John Wiley Sons, Inc. [References: 23]
机译：通过在硝酸铈铵（CAN）存在下将磺基甜菜碱型两性离子单体3-二甲基-（甲基丙烯酰氧基乙基）丙烷磺酸铵（DMAPS）接枝到羟乙基纤维素（HEC）上，合成了含有磺基甜菜碱基团的新型水溶性接枝多糖。 ）/乙二胺四乙酸（EDTA）引发系统。根据单体的接枝率（％GP）和接枝转化率（％GC），研究了CAN，EDTA，DMAPS和HEC的浓度以及聚合时间和温度对接枝反应的影响。 。随着CAN，EDTA和HEC浓度的增加，％GP和％GC会升高然后降低。 ％GP和％GC随着DMAPS浓度的增加而增加，直至达到某个值，超过此值，％GP不会显着增加，而％GC则下降。合适的聚合时间和温度对于接枝反应是有利的。通过红外，热重分析和粘度测量，对所得接枝多糖进行了表征。 （C）2002 John Wiley Sons，Inc. [参考：23]

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