• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>St. Petersburg Polytechnic University Journal: Physics and Mathematics >A dipole moment and conformations of poly-N-vinylpyrrolidone and of its complex with C60 fullerene in aqueous solutions
【24h】

A dipole moment and conformations of poly-N-vinylpyrrolidone and of its complex with C60 fullerene in aqueous solutions

机译：聚烯乙烯基吡咯烷酮与水溶液中C60富勒烯的偶极矩和综合

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The study of temperature dependences of dipole moments and conformational properties of poly-n-vinylpyrrolidone (PVP) and polymer complex of PVP with c60 fullerene (PVP + fc60) was carried out in dilute aqueous solutions at 293-313 K. It was shown that dipole moment values for PVP and PVP + fc60 were 24-32 d and 18 d, correspondingly. The presence of the molecular group -n-c=o in each monomer unit near the macromolecule backbone promotes the formation of helical blocks in macromolecular coils. In external electric field, the non-alternating projections on the direction of this field and on the vectors connecting the neighboring segments of the macromolecule appear. It was demonstrated that the changes in the characteristics of the dielectric polarization could be explained by structuring in the coils of PVP and PVP + fc60 in aqueous solutions.
机译：在293-313K的稀水溶液中对稀氢吡咯烷酮（PVP）和PVP聚合物复合物的偶极子矩（PVP）和聚合物复合物的温度依赖性的研究在稀水溶液中进行稀释水溶液。显示PVP和PVP + FC60的偶极矩值为24-32d和18d，相应地。在大分子骨架附近的每种单体单元中的分子基-N-C = O的存在促进了大分子线圈中螺旋块的形成。在外部电场中，在该字段的方向上和连接大分子的相邻段的向量上的非交替突起出现。结果证明，介电偏振的特性的变化可以通过在水溶液中的PVP和PVP + FC60的线圈中构建来解释。

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