Transamidation in the in situ blending of polyamide 1212 with polyamide 6 through anionic polymerization of caprolactam
文献类型：期刊论文
| 作者 | Wang, Xiao-Chun; Yang, Gui-Sheng; Zheng, Qiang |
| 刊名 | CHINESE JOURNAL OF POLYMER SCIENCE
 |
| 出版日期 | 2007-09-01 |
| 卷号 | 25期号:5页码:473-481 |
| 关键词 | Transamidation Polyamide Anionic Ring-opening Polymerization Nmr |
| ISSN号 | 0256-7679 |
| 英文摘要 | 20 wt% polyamide 12 (PA1212) pellets were dissolved in molten caprolactam. The caprolactam was then catalyzed at 180 degrees C and polymerized by means of anionic ring-opening polymerization to produce in situ blends of the resultant polyamide 6 (PA6) and PA1212. Mechanical blends with same ingredient were prepared through melt blending on a twin-screw extruder. Scanning electron microscopy (SEM) observation revealed that contrary to the mechanical blends with small spherulites embedded in the matrix, no phase- separation existed in the in situ blends. The results of thermal analysis by differential scanning calorimetry (DSC) showed that single melting peak and crystallization peak existed for the in situ blends, while two melting and crystallization peaks appeared for the mechanical blends. The in situ blend film and the mixed blend film, both cast from a dilute formic acid solution with a concentration of 0.5 g/L, remained similar crystallization and melting behavior as above. It is proved by solution C-13-NMR analysis that transamidation took place during the in situ blending, and it is suggested that the combination of temperature increasing and the basic surrounding derived from NaOH during polymerization resulted in the occurrence of transamidation. Furthermore, it is proposed that the interchange reaction between PA1212 and PA6 also resulted from the degradative reaction during the anionic polymerization. |
| 语种 | 英语 |
| WOS记录号 | WOS:000250834100006 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/62779]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yang, Gui-Sheng |
| 作者单位 | 1.Zhejiang Univ, Dept Polymer Sci & Engn, Hangzhou 310027, Peoples R China 2.Minist Educ, Key Lab Macromol Synth & Functionalizat, Hangzhou 310027, Peoples R China 3.Chinese Acad Sci, Inst Chem, Key Lab Engn Plast, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xiao-Chun,Yang, Gui-Sheng,Zheng, Qiang. Transamidation in the in situ blending of polyamide 1212 with polyamide 6 through anionic polymerization of caprolactam[J]. CHINESE JOURNAL OF POLYMER SCIENCE,2007,25(5):473-481. |
| APA | Wang, Xiao-Chun,Yang, Gui-Sheng,&Zheng, Qiang.(2007).Transamidation in the in situ blending of polyamide 1212 with polyamide 6 through anionic polymerization of caprolactam.CHINESE JOURNAL OF POLYMER SCIENCE,25(5),473-481. |
| MLA | Wang, Xiao-Chun,et al."Transamidation in the in situ blending of polyamide 1212 with polyamide 6 through anionic polymerization of caprolactam".CHINESE JOURNAL OF POLYMER SCIENCE 25.5(2007):473-481. |
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。