Confinement effects on glass transition temperature, transition breadth, and linear expansivity: An ultraslow X-ray reflectivity study on supported ultrathin polystyrene films
文献类型：期刊论文
| 作者 | Yang, Chunming ; Onitsuka, Rena ; Takahashi, Isao |
| 刊名 | EUROPEAN PHYSICAL JOURNAL E
 |
| 出版日期 | 2013 |
| 卷号 | 36期号:6 |
| ISSN号 | 1292-8941 |
| 英文摘要 | X-ray reflectivity measurements of the glass transition in thin polystyrene films supported on Si substrates were performed at slow cooling rates ranging from 0.62 to 0.01 degrees C/min. At a cooling rate of 0.14 degrees C/min, a depression in the glass transition temperature T-g was clearly observed with decreasing thickness. However, at a cooling rate of 0.62 degrees C/min, only a slight decrease in T-g for a 12-nm-thick film was observed, while at an ultraslow cooling rate of 0.01 degrees C/min, a significant reduction in the T-g of ultrathin films (12 and 6 nm) was observed. As the thickness decreased, a broadening in the width of the glass transition, w, was found at higher cooling rates (0.62 degrees C/min and 0.14 degrees C/min), while narrowing of w was observed at ultraslow cooling rates of 0.01 degrees C/min and 0.04 degrees C/min. A narrow distribution of relaxation time in the ultrathin films indicates that most segments are able to relax under the ultraslow cooling process, thus showing an inherent reduction in the T-g of the confined thin polymer films. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000321428200010 |
| 公开日期 | 2014-06-13 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/13695]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Yang, Chunming,Onitsuka, Rena,Takahashi, Isao. Confinement effects on glass transition temperature, transition breadth, and linear expansivity: An ultraslow X-ray reflectivity study on supported ultrathin polystyrene films[J]. EUROPEAN PHYSICAL JOURNAL E,2013,36(6). |
| APA | Yang, Chunming,Onitsuka, Rena,&Takahashi, Isao.(2013).Confinement effects on glass transition temperature, transition breadth, and linear expansivity: An ultraslow X-ray reflectivity study on supported ultrathin polystyrene films.EUROPEAN PHYSICAL JOURNAL E,36(6). |
| MLA | Yang, Chunming,et al."Confinement effects on glass transition temperature, transition breadth, and linear expansivity: An ultraslow X-ray reflectivity study on supported ultrathin polystyrene films".EUROPEAN PHYSICAL JOURNAL E 36.6(2013). |
入库方式： OAI收割
来源：上海应用物理研究所
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