文献类型：期刊文献

中文题名：正电子湮没技术在聚合物中的应用

英文题名：APPLICATION OF POSITRON ANNIHILATION TECHNIQUE IN THE FIELD OF POLYMER

作者：姚献东[1];赵益汝[1];季根忠[1];孙旭东[1];王天民[2];齐陈泽[1]

机构：[1]绍兴文理学院应用化学研究所;[2]北京航空航天大学理学院

年份：2003

卷号：31

期号：11

起止页码：39

中文期刊名：工程塑料应用

外文期刊名：Engineering Plastics Application

收录：CSTPCD、、北大核心2000、CSCD2011_2012、北大核心、CSCD

基金：浙江省自然科学基金 RC01050;501066

语种：中文

中文关键词：正电子湮没寿命谱;正电子素;自由体积;聚合物

外文关键词：positron annihilation lifetime spectrum (PALS) , positronium, free-volume, polymer

中文摘要：介绍正电子湮没技术的实验方法、谱图解析方法,概述近几年该技术在聚合物领域的应用和研究进展。实验结果证明,正电子湮没技术是一种先进的材料微观结构—自由体积的探测和表征技术。同时,提出该技术在聚合物研究中使用测量参数o—ps强度I_3计算自由体积分数所存在的问题。

外文摘要：The analysis of data from the lifetime spectra on basics of the principle and the experimental method of this technique were introduced respectively. The application and the development of this technique in the field of polymers are reviewed in recent years. Many experimental results have shown that the positron annihilation technique is an advanced technique for the test and characterization of the polymer microstructure, such as the free-volume of polymers. In addition, it is suggested that the measuring parameter o-ps and intensity I, do not always appropriated to be calculated as a measure of the fraction free volume.