期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Self-diffusion coefficients of organic solvents in linear and branched high density polyethylene particles measured by PFG NMR 被引量:2
1
作者 Xiao Wei Yan Xiao Hong Ren +2 位作者 Siegfried Stap Jing Dai Wang Yong Rong Yang 《Chinese Chemical Letters》 SCIE CAS CSCD 2008年第1期110-114,共5页
Pulsed field gradient nuclear magnetic resonance (PFG NMR) has been performed to study the diffusion of organic solvents into semicrystalline polyethylene particles. Self-diffusion coefficients in different domains ... Pulsed field gradient nuclear magnetic resonance (PFG NMR) has been performed to study the diffusion of organic solvents into semicrystalline polyethylene particles. Self-diffusion coefficients in different domains of the sample can be extracted through a bi- exponential fit to the echo intensity attenuation, which allows the precise determination of the tortuosity of the polyethylene particles. Further exploration comes from the measurements with branched polyethylene particles and it was found that the diffusion in polymer phase contributed significantly to the slow component of the exponential decay curve. 2007 Jing Dai Wang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved. 展开更多
关键词 Self-diffusion coefficients Pulsed field gradient NMR TORTUOSITY polyethylene particle
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部