聚乙烯吡咯烷酮与十二烷基甜菜碱相互作用的NMR研究  

Study on the Interaction between PVP and C_(12)BE by NMR

作　　者：黄梦雅 张红[1] 邹其超[1] 柴仕淦[1] 张金枝[1] HUANG Meng-Ya;ZHANG Hong;ZOU Qi-Chao;CHAI Shi-Gan;ZHANG Jin-Zhi(Hubei Collaborative Innovation Center for Advanced Organic Chemical Material,Key Laboratory for the Synthesis and Application of Organic Functional Molecules,Ministry of Educatio,College of Chemistry and Chemical Engineerin,Hubei University,Wuhan 430062)

机构地区：[1]有机化工新材料湖北省协同创新中心,有机功能高分子合成和应用教育部重点实验室,湖北大学化学化工学院,武汉43006

出　　处：《胶体与聚合物》2018年第3期131-133,共3页Chinese Journal of Colloid & Polymer

摘　　要：通过~1H NMR化学位移法测定十二烷基甜菜碱(C_(12)BE)与不同浓度的聚乙烯吡咯烷酮(PVP)混合体系的临界聚集浓度(cac)与聚集饱和浓度(C2)值;通过弛豫时间研究了PVP对C_(12)BE分子运动的影响。结果表明;随PVP的含量增加,cac与C2值增大,C_(12)BE分子运动受限越严重。从而推断PVP与C_(12)BE发生了一定的相互作用导致C_(12)BE的分子运动性发生改变,其主要驱动力为静电效应。The critical aggregation concentration（cac） and the adsorption reached saturated concentration（C2） values of Dodecyl Dimethyl Betaine（C（12）BE） with different concentration of Polyvinylpyrrolidone（PVP） had been studied by 1H NMR.The measurements of relaxation time showed that different content of PVP had different influences on the motion of C（12）BE molecular.The more content of PVP is,the more limited of C（12）BE molecular motion is.It can be seen that the change of the C（12）BE molecular motion because of the interaction between PVP and C（12）BE,and the electrostatic interaction was considered to be the leading driving force.

关 键 词：NMR 聚乙烯吡咯烷酮 十二烷基甜菜碱 弛豫时间 相互作用 

分 类 号：O631[理学—高分子化学]