• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Starch-poly(acrylamide-co-2-acrylamido-2-methylpropanesulfonic acid) graft copolymers prepared by reactive extrusion
【24h】

Starch-poly(acrylamide-co-2-acrylamido-2-methylpropanesulfonic acid) graft copolymers prepared by reactive extrusion

机译：反应挤出制备的淀粉-聚（丙烯酰胺-co-2-丙烯酰胺基-2-甲基丙烷磺酸）接枝共聚物

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Graft copolymers of starch with acrylamide and 2-acrylamido-2-methylpropanesulfonic acid (AMPS) were prepared by reactive extrusion in a twin-screw extruder. The weight ratio of total monomer to starch was fixed at 1 : 3, while the molar fraction of AMPS in the monomer feed ranged from 0 to 0.119. Monomer to polymer conversions were 85% or greater, with grafting efficiencies of 68% (highest AMPS content) to 85% (no AMPS). Absorbency in distilled water at pH 7 increased linearly with the mole fraction AMPS in the grafted polymer, while absorbencies in 0.9% NaCl were independent of AMPS content. When swollen in water/ethanol mixtures, swelling decreased gradually with increasing ethanol volume fraction, followed by a large decrease over a narrow ethanol concentration. This behavior is similar to that observed for AMPS-acrylamide gels. The swelling properties suggest these graft copolymers may have applications as responsive materials. (C) 2015 Wiley Periodicals, Inc.
机译：淀粉与丙烯酰胺和2-丙烯酰胺基-2-甲基丙烷磺酸（AMPS）的接枝共聚物是通过在双螺杆挤出机中反应性挤出制备的。总单体与淀粉的重量比固定为1：3，而单体进料中AMPS的摩尔分数为0至0.119。单体到聚合物的转化率为85％或更高，接枝效率为68％（最高AMPS含量）至85％（无AMPS）。 pH 7的蒸馏水中的吸收度随接枝聚合物中AMPS的摩尔分数线性增加，而0.9％NaCl的吸收度与AMPS含量无关。当在水/乙醇混合物中溶胀时，溶胀随着乙醇体积分数的增加而逐渐降低，随后在狭窄的乙醇浓度下大幅降低。此行为类似于AMPS-丙烯酰胺凝胶的行为。溶胀性能表明这些接枝共聚物可以作为响应材料应用。 （C）2015威利期刊公司

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号