Control of thermal cross-linking reactions and the degree of crystallinity of syndiotactic 1,2-polybutadiene
文献类型：期刊论文
| 作者 | Cai, JL; Yu, Q; Zhang, XQ; Lin, JP; Jiang, LS |
| 刊名 | JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
 |
| 出版日期 | 2005-10-15 |
| 卷号 | 43期号:20页码:2885-2897 |
| 关键词 | Crystallization Kinetics Differential Scanning Calorimetry Polarized Optical Microscopy Tmdsc Waxd Syndiotactic 1 2-polybutadiene |
| ISSN号 | 0887-6266 |
| DOI | 10.1002/polb.20571 |
| 英文摘要 | Thermal stability, crystallization, morphological development, subsequently melting, and crystallinity control of a syndiotactic 1,2-polybutadiene sample were carefully carried out by thermogravimetry (TGA), polarized optical microscopy (POM), differential scanning calorimetry (DSC), temperature-modulated differential scanning calorimetry (TMDSC), and wide-angle X-ray diffraction (WAXD), respectively. The experiments indicate that thermal cross-linking reaction rates under nitrogen protection and in air are different for this polymer at temperature above 155 degrees C. Under nitrogen protection, the thermal cross-linking reaction rate is delayed and the mechanism of melt crystallization obtained from the DSC results is in good accordance with that from POM observation. TMDSC results indicate that melting-recrystallization-melting model is more proper to explain the double melting events of this sample. At the same time, the evolution of the degree of crystallinity as the function of the time was investigated by WAY-D profiles for the samples firstly crystallized at 145 degrees C for 1 h and then kept at 163 degrees C mediated between the temperatures of the double peaks. It shows that as prolonging the annealing time at 163 degrees C thermal cross-linking reactions possibly occur, leading to gradual reduction of the apparent crystallite sizes, evaluated by Scherrer equation and the degree of crystallinity. The changing sequence of the relative intensity of the stronger four diffraction peaks with time due to thermal cross-linking reactions is (111)/(201) > (210) > (010) > (200)/(110). (c) 2005 Wiley Periodicals, Inc. |
| 语种 | 英语 |
| WOS记录号 | WOS:000232406800006 |
| 出版者 | JOHN WILEY & SONS INC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/55977]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Cai, JL |
| 作者单位 | 1.E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China 2.Nanjing Univ, Dept Chem & Chem Engn, Key Lab Mesoscop Mat Sci, Nanjing 210093, Peoples R China 3.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, JL,Yu, Q,Zhang, XQ,et al. Control of thermal cross-linking reactions and the degree of crystallinity of syndiotactic 1,2-polybutadiene[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,2005,43(20):2885-2897. |
| APA | Cai, JL,Yu, Q,Zhang, XQ,Lin, JP,&Jiang, LS.(2005).Control of thermal cross-linking reactions and the degree of crystallinity of syndiotactic 1,2-polybutadiene.JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,43(20),2885-2897. |
| MLA | Cai, JL,et al."Control of thermal cross-linking reactions and the degree of crystallinity of syndiotactic 1,2-polybutadiene".JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 43.20(2005):2885-2897. |
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。