The effect of orientation of global chain on crystallization behavior of amorphous polyethylene terephthalate
文献类型：期刊论文
| 作者 | Song, R; Chen, J; Lin, X; Gao, JG; Fan, QR |
| 刊名 | ACTA POLYMERICA SINICA
 |
| 出版日期 | 1998-10-01 |
| 期号 | 5页码:586-590 |
| 关键词 | Polyethylene Terephthalate Solvent Induced Crystallization Differential Scanning Calorimetry |
| ISSN号 | 1000-3304 |
| 英文摘要 | In the rubbery state of amorphous polymers under uni-axial drawing, the glolal chain orientation will relax in orders of magnitude slower than the relaxation of local segmental orientation. When this state of hot drawn sample is frozen at temperatures lower than its glass transition, T-g, an amorphous state with high global chain orientation but nearly random segmental orientation(GOLR) would result. The characteristic features of GOLF state are large recovery of the elastic deformation beta' of global chain on being heated to temperatures above T-g (beta' = 70% similar to 90%) and very small birefringence (Delta n similar to 10(-4)). The effect of global chain orientation (GCO) on crystallization behavior of amorphous polyethylene terephthalate (PET) fibres is studied by differential scanning calorimetry (DSC) performed at different heating rates and solvent induced crystallization (SINC) method by comparing the crystallization behavior of PET as-spun fiber in GOLR state (beta' = 34.3%, Delta n =1 x 10(-3), rho = 1.3362g/cm(3) with that of its thermally relaxed(l05 degrees C, 3 min in the air) PET sample (beta' = 5.4%, rho = 1.3362g/cm(3)). The results indicate that the cold crystallization temperature, T-cc, is effectively depressed by the GCO. That means the global chain orientation accelerates the development of crystallization. |
| 语种 | 英语 |
| WOS记录号 | WOS:000076850500013 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/74703]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Song, R |
| 作者单位 | Chinese Acad Sci, Inst Chem, Polymer Phys Lab, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song, R,Chen, J,Lin, X,et al. The effect of orientation of global chain on crystallization behavior of amorphous polyethylene terephthalate[J]. ACTA POLYMERICA SINICA,1998(5):586-590. |
| APA | Song, R,Chen, J,Lin, X,Gao, JG,&Fan, QR.(1998).The effect of orientation of global chain on crystallization behavior of amorphous polyethylene terephthalate.ACTA POLYMERICA SINICA(5),586-590. |
| MLA | Song, R,et al."The effect of orientation of global chain on crystallization behavior of amorphous polyethylene terephthalate".ACTA POLYMERICA SINICA .5(1998):586-590. |
入库方式： OAI收割
来源：化学研究所
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