Rheological characterization of lightly sulfonated polystyrene ionomers and its blends with precursor polystyrene
文献类型：期刊论文
| 作者 | Wang, J; Zheng, XJ; Liu, CY; Cheng, XG; He, JS |
| 刊名 | CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
 |
| 出版日期 | 2002-07-01 |
| 卷号 | 23期号:7页码:1437-1443 |
| 关键词 | Rheological Properties Sulfonated Polystyrene Ionomers Yield Stress Blends |
| ISSN号 | 0251-0790 |
| 英文摘要 | The rheological properties of 0.98% (molar fraction) lightly sulfonated polystyrene ionomer (SPS), zinc neutralized SPS (ZnSPS) and their blends with precursor polystyrene (PS) are reported. It is found that the rheological properties of ionomers and-their blends are quite different with PS, due to the ionic aggregates acting as physical cross-links in ionomers. Using linear viscoelasticity data, the time-temperature superposition can be conducted to all samples. Differences are also found in the low frequency region of linear viscoelasticity data. Correlated with the relaxation of polymer chains, the moduli of ionomers are higher than those of PS due to the effect of ionic aggregates. In the steady shear test, typical yield phenomena can be found in the apparent viscosity curves of ionomers, which are also resulted from the ionic aggregates. Utracki's formula for yield stress fits the apparent viscosity data properly and the yield stress and zero shear viscosity of ionomers are obtained. It is also found that the yield phenomena of ionomers are disappeared above certain temperature. The Cox-Merz rule is invalid for ionomers, due to the complex viscosity and apparent viscosity characterizes at different state of ionomer fluid, with ionic aggregates and breakdown of ionic aggregates, respectively. Finally, the different relationship between blends composition and rheological properties indicate that different ionic aggregate structure:or ionic association exists in the PS/SPS and PS/ZnSPS blends. |
| 语种 | 英语 |
| WOS记录号 | WOS:000176908400056 |
| 出版者 | HIGHER EDUCATION PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/78161]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | He, JS |
| 作者单位 | Chinese Acad Sci, Inst Chem, State Key Lab Engn Plast, Ctr Mol Sci, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, J,Zheng, XJ,Liu, CY,et al. Rheological characterization of lightly sulfonated polystyrene ionomers and its blends with precursor polystyrene[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2002,23(7):1437-1443. |
| APA | Wang, J,Zheng, XJ,Liu, CY,Cheng, XG,&He, JS.(2002).Rheological characterization of lightly sulfonated polystyrene ionomers and its blends with precursor polystyrene.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,23(7),1437-1443. |
| MLA | Wang, J,et al."Rheological characterization of lightly sulfonated polystyrene ionomers and its blends with precursor polystyrene".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 23.7(2002):1437-1443. |
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。