| 60Co的γ辐照对SB的自由体积和微结构的影响的PALS和FT-IR的研究 |
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| 引用本文： | 蒋中英,郁伟中,赵永富,蒋锡群,夏元复.60Co的γ辐照对SB的自由体积和微结构的影响的PALS和FT-IR的研究[J].物理学报,2006,55(7):3743-3747. |
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| 作者姓名： | 蒋中英 郁伟中 赵永富 蒋锡群 夏元复 |
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| 作者单位： | (1)江苏农科院原子能所，南京 210014; (2)南京大学化工学院高分子科学与工程系，南京 210093; (3)南京大学物理系，南京 210093; (4)南京大学物理系，南京 210093;伊犁师范学院物理系，伊宁 835000; (5)清华大学物理系，北京 100084 |
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| 摘 要： | 利用正电子湮没技术和傅里叶红外分析研究手段，基于Eldrup的自由体积孔经典模型，分别研究了60Co的γ辐照剂量对聚苯乙烯-丁二烯二嵌段共聚物(SB)的自由体积和微结构变化的影响，并关联两种测试结果，确定了60Co的γ辐照对SB的辐照交联和降解模型.而后用热重分析(TGA)研究了辐照前后的SB的热稳定，给出了自由体积参数变化与热稳定的关联.
关键词：
正电子湮没技术
正电子素
嵌段共聚物
γ辐射
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| 关 键 词： | 正电子湮没技术 正电子素 嵌段共聚物 γ辐射 |
| 文章编号： | 1000-3290/2006/55（07）/3743-05 |
| 收稿时间： | 06 19 2005 12:00AM |
| 修稿时间： | 8/3/2005 12:00:00 AM |
Influence of irradiation dose on free volume and microstructure of SB biblock copolymer study by PALS and FT-IR |
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| Jiang Zhong-Ying,Yu Wei-Zhong,Zhao Yong-Fu,Jiang Xi-Qun,Xia Yuan-Fu.Influence of irradiation dose on free volume and microstructure of SB biblock copolymer study by PALS and FT-IR[J].Acta Physica Sinica,2006,55(7):3743-3747. |
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| Authors: | Jiang Zhong-Ying Yu Wei-Zhong Zhao Yong-Fu Jiang Xi-Qun Xia Yuan-Fu |
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| Institution: | 1 Department of Physics, Nanjing University, Nanjing 210093,China; 2 Department of Physics , Yili Normal lnstitute , Yining 835000, China; 3 Department of Physics , Tsinghua University, Beijing 100084,China; 4 Institute of Atomic Energy, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China;5 Department of Polymer Science and Engineering, College of Chemistry and Chemical Enginering , Nanjing University, Nanjing 210093,China |
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| Abstract: | Positron annihilation lifetime spectroscopy and Fourier transform Infrared spectrometer were used to study the effect of γ irradiation dose on free volume and microstructure of polystyrene-block-butadiene diblock copolymer, respectively. Based on the free volume classic model of Eldrup and examonation of the correlation between their results, the model of γ irradiation effect on cross-linking and degradation of SB is established. Thermal gravity analysis was used to study thermal stability of SB at various irradiation doses to reveal the relationship between thermal stability and micro-structure changes. |
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| Keywords: | positron annihilation technique positronium block copolymer γ irradiation |
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