波谱学杂志2017，Vol.34Issue(4)：408-420,13.DOI:10.11938/cjmr20172571
三种测量橡胶交联密度的核磁共振方法比较
Comparison of Three NMR Methods for Measuring Crosslink Density of Rubbers
摘要
Abstract
NMR is a frequently used technique for measuring crosslink density of rubbers. In this work, three commonly used proton NMR methods for measuring crosslink density of rubbers [i.e., 1H double-quantum (DQ) NMR, 1H Hahn echo and 1H CPMG echo] were compared. Different approaches showed different results, and the origin of such discrepancy was discussed. The echo time dependence of the crosslink density measured with the CPMG echo method was studied. The ways to improve the CPMG echo-based measurements are discussed.关键词
1HCPMG回波/1HHahn回波/1HDQNMR/天然橡胶/交联密度Key words
1H CPMG echo/1H Hahn echo/1H double-quantum (DQ) NMR/natural rubber/crosslink density分类
数理科学引用本文复制引用
高鹏飞,褚琳琳,杨翼,江纪锋,王嘉琛,姚叶锋,周兵..三种测量橡胶交联密度的核磁共振方法比较[J].波谱学杂志,2017,34(4):408-420,13.基金项目
国家自然科学基金资助项目(21574043, 41572103) （21574043, 41572103）
国家重点基础研究发展计划("973"计划)资助项目(2013CB921801) （"973"计划）
上海市科委资助项目(15142200500) （15142200500）
华东师范大学科研创新基金资助项目. （）
