• 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 >A Qualitative Evaluation of Water and Monomethyl Hydrazine in Ethylcellulose Membrane
【24h】

A Qualitative Evaluation of Water and Monomethyl Hydrazine in Ethylcellulose Membrane

机译：乙基纤维素膜中水和一甲基肼的定性评估

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

Specific interaction sites of ethylcellulose (EC) with water and monomethyl hydrazine (MMH) and its hydrate have been studied by Fourier transform infrared spectra. Measurements of diffusion and sproption coefficients of MMH and water in EC were made from the reduced sorption curves to determine the overall selectivity of the membrane. Flow patterns across the membrane were examined under an optical microscope (OM) equipped with a differential interference contrast (DIC) facility. Correlation of the front velocity and the diffusivity has been used to calculate and compare these values of diffusion coefficient with that obtained from reduced sorption curve. Desorption of MMH hydrate from EC has been attributed to polymer relaxation phenomena. The physical aging process of the membrane has been monitored by FTIR analysis and mechanical strength evalution. These studies showed that the EC membrane can be used for prologed periods in MMH and, as such, is suitable for the separation of MMH-water solutions.
机译：通过傅立叶变换红外光谱研究了乙基纤维素（EC）与水和一甲基肼（MMH）及其水合物的特定相互作用位点。根据减少的吸附曲线对MMH和水在EC中的扩散系数和支撑系数进行测量，以确定膜的总体选择性。在配备有差分干涉对比（DIC）设施的光学显微镜（OM）下检查跨膜的流动模式。前沿速度和扩散率的相关性已被用于计算和比较扩散系数的这些值与从减小的吸附曲线获得的值。 EC中MMH水合物的解吸归因于聚合物松弛现象。膜的物理老化过程已经通过FTIR分析和机械强度评估进行了监控。这些研究表明，EC膜可用于MMH的延长生产期，因此，它适合分离MMH水溶液。

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