Crystal structure and thermal behavior of cold-crystallized poly(trimethylene terephthalate)
文献类型：期刊论文
| 作者 | Chen, Zhen; Luo, Jun; Yan, Shouke |
| 刊名 | COLLOID AND POLYMER SCIENCE
 |
| 出版日期 | 2013-04-01 |
| 卷号 | 291期号:4页码:757-766 |
| 关键词 | Poly(Trimethylene Terephthalate) Cold Crystallization Structure Thermal Behavior |
| ISSN号 | 0303-402X |
| DOI | 10.1007/s00396-012-2786-8 |
| 英文摘要 | The structure and thermal behavior of cold-crystallized poly(trimethylene terephthalate) (PTT) are revealed in detail by DSC, AFM, TEM, and WAXD as well as in situ FTIR and SAXS techniques. There is no effect of crystallization temperature and initial state on the crystal modification, yet the morphology is strongly affected by these two factors. First, the small rod-like lamellae for PTT are obtained during the cold crystallization instead of the spherulites formed in the melt crystallization. Second, the edge-on lamellar orientation in thin films is identified during the cold crystallization. The thickness and the lateral width of rod-like lamellae get larger and larger with increasing crystallization temperature. Thin lamellar crystals assemble randomly when the cold-crystallization temperature is lower, while lamellar stacks composed of thicker lamellae are observed when the PTT was annealed at elevated temperature. Moreover, for the cold-crystallized PTT, the final melting temperature does not vary with the crystallization temperature. This phenomenon is explained by the structural improvement during the heating process. For the cold-crystallized PTT sample at lower temperature, three transitions occur when it is heated again: the relaxation of the rigid amorphous phase, the reorganization of molecules in the intermediate phase, and then the melt-recrystallization behavior. Those transitions finally lead to thicker lamellae besides a higher crystallinity before the final fusion. Therefore, the final melting peak of these lamellae is at the same temperature. |
| 语种 | 英语 |
| WOS记录号 | WOS:000316491300001 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/42117]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yan, Shouke |
| 作者单位 | Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Inst Chem, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Zhen,Luo, Jun,Yan, Shouke. Crystal structure and thermal behavior of cold-crystallized poly(trimethylene terephthalate)[J]. COLLOID AND POLYMER SCIENCE,2013,291(4):757-766. |
| APA | Chen, Zhen,Luo, Jun,&Yan, Shouke.(2013).Crystal structure and thermal behavior of cold-crystallized poly(trimethylene terephthalate).COLLOID AND POLYMER SCIENCE,291(4),757-766. |
| MLA | Chen, Zhen,et al."Crystal structure and thermal behavior of cold-crystallized poly(trimethylene terephthalate)".COLLOID AND POLYMER SCIENCE 291.4(2013):757-766. |
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。