Effect of gamma-Ray Irradiation on Chain Structure and Crystallization Behavior of Isotactic Polypropylene
文献类型：期刊论文
| 作者 | Zhou Li-Juan; Zhang Xiu-Qin; Li Rong-Bo; Su Yun-Lan; Zhao Ying; Wang Du-Jin; Xu Duan-Fu |
| 刊名 | CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
 |
| 出版日期 | 2012-04-10 |
| 卷号 | 33期号:4页码:850-855 |
| 关键词 | Isotactic Polypropylene(Ipp) Gamma-irradiation Chain Structure Crystallization Behavior |
| ISSN号 | 0251-0790 |
| DOI | 10.3969/j.issn.0251-0790.2012.04.036 |
| 英文摘要 | The structure and crystallization behavior of isotactic polypropylene(iPP) irradiated by gamma-ray, were investigated by a combination of gel permeation chromatography(GPC), Fourier transform infrared spectroscopy(FTIR) and differential scanning calorimetry(DSC). The results indicated that gamma-ray irradiation led to the formation of hydoxyl and carbonyl groups on iPP main chains as well as the degradation of iPP macromolecules. As the irradiation dose was lower than 50 kGy, the crystallization temperature(T-e) of irradiated iPP increased slightly with the increase of irradiation dose. However, the T-e of irradiated iPP decreased obviously, when the irradiation dose is above 50 kGy, and the melting peak of iPP moved to lower temperature and split into two peaks. The overall isothermal crystallization kinetics of unirradiated and irradiated iPP were analyzed by the Avrami equation. The values of Avrami exponent n are close to 3, indicating that iPP nucleates in the heterogeneous manner regardless of the crystallization temperature and the irradiation dose. The DSC data indicated that the overall crystallization rates decrease with the increase of crystallization temperature and radiation dose. The relationship between chain structure change and crystallization rate was discussed. |
| 语种 | 英语 |
| WOS记录号 | WOS:000303691300036 |
| 出版者 | HIGHER EDUCATION PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/49201]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang Du-Jin |
| 作者单位 | Chinese Acad Sci, Inst Chem, Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou Li-Juan,Zhang Xiu-Qin,Li Rong-Bo,et al. Effect of gamma-Ray Irradiation on Chain Structure and Crystallization Behavior of Isotactic Polypropylene[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2012,33(4):850-855. |
| APA | Zhou Li-Juan.,Zhang Xiu-Qin.,Li Rong-Bo.,Su Yun-Lan.,Zhao Ying.,...&Xu Duan-Fu.(2012).Effect of gamma-Ray Irradiation on Chain Structure and Crystallization Behavior of Isotactic Polypropylene.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,33(4),850-855. |
| MLA | Zhou Li-Juan,et al."Effect of gamma-Ray Irradiation on Chain Structure and Crystallization Behavior of Isotactic Polypropylene".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 33.4(2012):850-855. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。