The absorption behavior and crystallization of poly(aryl ether ketone) films
文献类型：期刊论文
| 作者 | Ke, YC; Wu, ZW |
| 刊名 | JOURNAL OF APPLIED POLYMER SCIENCE
 |
| 出版日期 | 1998-03-21 |
| 卷号 | 67期号:12页码:2065-2075 |
| 关键词 | Absorption Desorption Poly(Aryl Ether Ketone) Films Molecular Polarization Chain Rigidity |
| ISSN号 | 0021-8995 |
| 英文摘要 | The absorption and subsequent desorption behaviors of amorphous polymer films of PEEK poly(ether ether ketone), PEEKK poly(ether ether ketone ketone), and PEKK poly(ether ketone ketone) in solvent of 1,2-dichloroethane (C2H4Cl2) are investigated and compared. The equilibrium absorption weight (M-infinity) of these polymers is related to their molecular ketone content or molecular chain rigidity and also to the experimental conditions. Especially, at a certain temperature, the molecular chains in the solvent can be polarized, which leads to producing greater M-infinity for polymer films; for example, at 60 degrees C, M-infinity = 46% for PEEK and M-infinity = 65% for PEKK. The pseudodiffusion coefficients for PEEK, PEEKK, and PEKK all surpass the 6.0 x 10(-12) m(2) s(-1). The polymer's molecular polarization has been proved in concentrated sulfur acid. Results also show that amorphous resin's films become white and creeped in dichloroethane, which is more serious when metaphenyl links are introduced into PEEKK or PEKK molecular main chains. The residual solvent of 1% or so often exists in the films, even though a long desorption time (over 100 h) has been proceeded. Absorption has induced crystallization of amorphous polymer films, but this crystallization process is slightly different from that of the films crystallized from both the glassy state and the melting state in the solvent, which makes the amorphous interlayers grow progressively and more condensely; thus, the crystallized films will have higher T-g's than these crystallized under annealing condition. The morphology results have shown that the solvent-crystallized films are less toughened than the amorphous ones because of the intermediate layer between the induced crystallized area and the amorphous area in the core. (C) 1998 John Wiley & Sons, Inc. |
| 语种 | 英语 |
| WOS记录号 | WOS:000072120900012 |
| 出版者 | JOHN WILEY & SONS INC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/74305]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Ke, YC |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China 2.Jilin Univ, Dept Chem, Changchun 130023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ke, YC,Wu, ZW. The absorption behavior and crystallization of poly(aryl ether ketone) films[J]. JOURNAL OF APPLIED POLYMER SCIENCE,1998,67(12):2065-2075. |
| APA | Ke, YC,&Wu, ZW.(1998).The absorption behavior and crystallization of poly(aryl ether ketone) films.JOURNAL OF APPLIED POLYMER SCIENCE,67(12),2065-2075. |
| MLA | Ke, YC,et al."The absorption behavior and crystallization of poly(aryl ether ketone) films".JOURNAL OF APPLIED POLYMER SCIENCE 67.12(1998):2065-2075. |
入库方式： OAI收割
来源：化学研究所
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