| SPEK-C膜的正电子湮灭寿命谱学研究 |
| |
| 引用本文： | 马卫涛,张永明,朱大鸣,阴泽杰,徐铜文,图图英.SPEK-C膜的正电子湮灭寿命谱学研究[J].中国科学技术大学学报,2005,35(3):434-439. |
| |
| 作者姓名： | 马卫涛 张永明 朱大鸣 阴泽杰 徐铜文 图图英 |
| |
| 作者单位： | 1. 中国科技大学近代物理系,安徽,合肥,230026
2. 中国科技大学化学系,安徽,合肥,230026 |
| |
| 摘 要： | 利用正电子湮灭寿命谱(PALS)法及原子力显微镜(AFM)，研究了磺化及溶剂蒸发对(磺化)酚酞侧基聚芳醚硐(SPEK-C)膜制备的影响．结果表明：磺化基团的引入，降低了分子间的作用力，使得分子间排列不紧密，导致聚合物的自由体积大小与强度同时增加；铸膜液溶剂挥发，聚合物浓度增加，胶束聚集体的相互聚集产生较大的胶束聚集体孔，使自由体积减小而强度增大，聚合物的自由体积较好地反映了胶束聚集体的聚集特征．
|
| 关 键 词： | 正电子湮灭寿命谱 酚酞侧基聚芳醚硐 原子力显微镜 自由体积 相转化 |
| 文章编号： | 0253-2778(2005)03-0434-06 |
| 修稿时间： | 2004年11月10 |
Positron Annihilation on SPEK-C Films |
| |
| MA Wei-tao,ZHANG Yong-ming,ZHU Da-ming,YIN Ze-jie,XU Tong-wen,Htwe Htwe yin.Positron Annihilation on SPEK-C Films[J].Journal of University of Science and Technology of China,2005,35(3):434-439. |
| |
| Authors: | MA Wei-tao ZHANG Yong-ming ZHU Da-ming YIN Ze-jie XU Tong-wen Htwe Htwe yin |
| |
| Institution: | MA Wei-tao~ |
| |
| Abstract: | The sulfonated polyetherketone with cardo group(SPEK-C) films made by different sulfonation degrees and solvent evaporation shows the different microstructure by positron annihilation lifetime spectroscopy(PALS) and atomic force microscopy(AFM). The sulfonating of polymer decreases the interaction between molecules, and forms an unbending array, so that both free volume radius and intensity increase. With the solvent evaporating, the consistency of polymer increases, the congeries of mucus bundles shapes the bigger hole due to their conglomeration. As a result, the free volume radius decreases and intensity increases. So the free volume can well explain the conglomeration characters of the congeries of mucus bundles. |
| |
| Keywords: | positron annihilation lifetime spectroscopy atomic force microscopy SPEK-C free volume phase inversion |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
