...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of industrial and engineering chemistry >Metachromatic behavior: Influence of the molecular weights of chitosan in thionine-sodium dodecyl sulfate system
【24h】

Metachromatic behavior: Influence of the molecular weights of chitosan in thionine-sodium dodecyl sulfate system

机译：变色行为：壳聚糖分子量在硫氨酸-十二烷基硫酸钠体系中的影响

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

Chitosans having three molecular weights (4.0 x 10~4,8.0 x 10~4, and 16.0 x 10~4 Da) were isolated by an ultrasonic degradation of chitin obtained from crab shell wastes and used to determine a metachromic behavior from the effect of aggregation characteristics. The metachromatic behaviors of thionine (Th)-sodium dodecyl sulfate (SDS), Th-SDS-chitosan system were investigated by the absorption and fluorescence spectroscopy.For SDS/Th < 40, the order of decrease of fluorescence intensity in Th-SDS-chitosan system was found to be 40k > 80k > 160k of molecular weight of chitosan. In spite of adding small amount of chitosan to Th-SDS system, a reversal of metachromatic behavior in the Th-SDS-chitosan system occurs. From the measurement of the solvent effect by adding ethanol to Th-SDS-chitosan system, the order of increase of the disaggregation was determined to be 40k < 80k < 160k of molecular weights of chitosan.
机译：通过对蟹壳废物中的几丁质进行超声波降解，分离出具有三种分子量（4.0 x 10〜4、8.0 x 10〜4和16.0 x 10〜4 Da）的壳聚糖，并根据其作用确定变色行为。聚集特征。通过吸收和荧光光谱研究了亚硫氨酸（Th）-十二烷基硫酸钠（SDS），Th-SDS-壳聚糖系统的变色行为。对于SDS / Th <40，Th-SDS-S中荧光强度的降低顺序为：壳聚糖系统的分子量为40k> 80k> 160k。尽管向Th-SDS系统中添加了少量的壳聚糖，但在Th-SDS-壳聚糖系统中发生了变色行为的逆转。通过向Th-SDS-壳聚糖体系中添加乙醇来测量溶剂效果，确定了解聚增加的顺序为：壳聚糖分子量为40k <80k <160k。

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