頁籤選單縮合
| 題 名 | Diffusion Analysis of Gelatin Solutions by Photocorrelation Spectroscopy |
|---|---|
| 作 者 | Hwang,J. S.; Yang,Z. P.; Dai,S. B.; Tyan,S. L.; Kuo,M. T.; Lin,C. L.; | 書刊名 | Chinese Journal of Physics |
| 卷 期 | 36:5 1998.10[民87.10] |
| 頁 次 | 頁733-745 |
| 分類號 | 336.5 |
| 關鍵詞 | |
| 語 文 | 英文(English) |
| 英文摘要 | The diffusion coefficients and ploydispersities of ploydisperse gelatin solutions are studied by photocoreelation spectroscopy. The method of cumulant analysis is used in analyzing the autocorrelation data the z-average diffusion coefficients and ploydispersities of the gelatin solutions are obtained from the first and second order cumulants, respectively. Gelatin particles are freely dispersed at low concentrations, but form polymer networks at high concentrations. The z-average free diffusion coefficient is independent of concentration and is proportional to q2. The hydrodynamic radii and ploydispersities of the gelatin molecules at different salt concentrations and temperatures are also studied. The results lead to the conclusion that most of the aggregates are covalently linked and that hydrogen-bonded and collagen-folded aggregates do not make significant contributions to the overall aggregate makeup even at temperatures as how as 20℃. |
本系統中英文摘要資訊取自各篇刊載內容。