| 辐照接枝氟塑料的正电子寿命谱研究 |
| |
| 引用本文： | 嘉祯,刘宝钧,杨文英,李莹.辐照接枝氟塑料的正电子寿命谱研究[J].核技术,2000,23(6):384-388. |
| |
| 作者姓名： | 嘉祯 刘宝钧 杨文英 李莹 |
| |
| 作者单位： | 1. 天津师范大学 天津300074
2. 天津技术物理研究所 天津300080 |
| |
| 基金项目： | 天津市自然科学基金，963604011， |
| |
| 摘 要： | 用正电子湮没寿命谱研究了对聚四氟乙烯和聚合氟乙丙烯进入γ辐照接枝的反应机理。结果表明：γ辐照和辐照接枝使聚合物的凝聚态结构发生了变化。随着辐剂量的增加，接枝率不断提高，而正电子湮没长寿命产生明显改变。说明了辐照接枝主要发生在非晶区以及非晶区和晶区的交界处，将实验结果与红外光谱进行了比较。
|
| 关 键 词： | 正电子湮没寿命谱 辐照枝 氟塑料 聚四氟乙烯 |
| 修稿时间： | 2000年1月7日 |
Study of irradiation induced grafting of fluoride polymerby positron lifetime spectra |
| |
| FENG Jiazhen,Liu Baojun,Yang Wenying,LI Ying.Study of irradiation induced grafting of fluoride polymerby positron lifetime spectra[J].Nuclear Techniques,2000,23(6):384-388. |
| |
| Authors: | FENG Jiazhen Liu Baojun Yang Wenying LI Ying |
| |
| Abstract: | The reaction mechanism of irradiation induced grafting co-polymerization of fluoride polymer is investigated by positron annihilation lifetime technique. The results indicated that γ-irradiation induced grafting changed the structure of condensed state of polymer. With increasing irradiation dose, graft rate raised and the long lifetime of positron annihilation changed significantly. It show that irradiation-grafted reaction is mainly localized in non-crystallite as well as interface between non-crystallite and crystallite. |
| |
| Keywords: | Positron annihilation lifetime Irradiation Irradiation induced grafting |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
