• 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 >Complexation of macroporous amphoteric cryogels based on N,N-dimethylaminoethyl methacrylate and methacrylic acid with dyes, surfactant, and protein
【24h】

Complexation of macroporous amphoteric cryogels based on N,N-dimethylaminoethyl methacrylate and methacrylic acid with dyes, surfactant, and protein

机译：基于N，N-二甲基氨基乙基甲基丙烯酸酯和甲基丙烯酸的大孔两性冰晶与染料，表面活性剂和蛋白质的络合

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

Macroporous amphoteric cryogels based on N,N-dimethylaminoethylmethacrylate and methacrylic acid p(DMAEM-co-MAA) crosslinked by N,N-methylenebisacrylamide (MBAA) were synthesized by radical copolymerization of monomer mixtures in cryoconditions. The structure and morphology of cryogels were evaluated by FTIR and SEM. Cryogels exhibited interconnected porous structure with pore size ranging from 40 to 80 mm, which depended on their crosslinking degree. The value of the isoelectric point (IEP) of equimolar amphoteric cryogel determined from the water flux was equal to 4.4, while the IEP of cryogel with the excess of DMAEM units was equal to 7.1. The mechanical strength of equimolar amphoteric cryogels increases with increasing amount of crosslinking agent. The complexation ability of amphoteric cryogels with respect to surfactant, dyes, and protein was demonstrated. The adsorption isotherms with respect to anionic surfactant-sodium dodecylbenzene sulfonate (SDBS) and protein-lysozyme correspond to Langmuir equation, while adsorption isotherms of anionic and cationic dyes-methylene blue (MB) and methyl orange (MO) are well described by Freundlich equation. It was found that the binding ability of p(DMAEM-co-MAA) with respect to various low-and high-molecular weight compounds changes in the following order: SDBS > lysozyme MO > MB. The preferential adsorption of MB from the mixture of protein and MB was shown. The quantitative release of protein, surfactant and dye molecules from the matrix of cryogels takes place at the IEP of cryogel. (C) 2016 Wiley Periodicals, Inc.
机译：通过在低温条件下单体混合物的自由基共聚反应，合成了基于N，N-二甲基氨基丙烯酸甲基酯和N，N-亚甲基双丙烯酰胺（MBAA）交联的甲基丙烯酸p（DMAEM-co-MAA）的大孔两性冰晶。用FTIR和SEM评价了冰晶的结构和形貌。冰晶石表现出相互连接的多孔结构，其孔径范围为40至80 mm，这取决于它们的交联度。由水通量确定的等摩尔两性冷冻凝胶的等电点（IEP）值等于4.4，而带有过量DMAEM单元的冷冻凝胶的IEP等于7.1。等摩尔两性冰晶的机械强度随交联剂用量的增加而增加。证明了两性冰晶相对于表面活性剂，染料和蛋白质的络合能力。阴离子表面活性剂-十二烷基苯磺酸钠（SDBS）和蛋白质-溶菌酶的吸附等温线对应于Langmuir方程，而阴离子和阳离子染料-亚甲基蓝（MB）和甲基橙（MO）的吸附等温线由Freundlich方程很好地描述。发现p（DMAEM-co-MAA）对各种低分子量和高分子量化合物的结合能力按以下顺序变化：SDBS>溶菌酶 MO> MB。显示了从蛋白质和MB的混合物中优先吸附MB。蛋白质，表面活性剂和染料分子从冷冻凝胶的定量释放发生在冷冻凝胶的IEP处。 （C）2016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