| 改性明胶沉降剂的等电点及其分布的研究 |
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| 引用本文： | 陈丽娟,彭必先.改性明胶沉降剂的等电点及其分布的研究[J].影像科学与光化学,1984,2(4):13-19. |
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| 作者姓名： | 陈丽娟 彭必先 |
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| 作者单位： | 中国科学院感光化学研究所 |
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| 摘 要： | 改性明胶已经被广泛地用作感光乳剂的沉降剂。然而对其沉降作用的机理,人们却还了解得很少。改性明胶的等电点,是影响改性明胶沉降的重要因素之一。我们采用等电聚焦的新技术,经过适当的改变,成功地测定了改性明胶的等电点及其分布。所得等电点分布的数值,能较好地说明改性胶为什么只有在确定的pH范围内才能进行沉降。
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| 收稿时间： | 1983-10-06 |
THE ISOELECTRIC POINT DISTRIBUTION OF MODIFIED GELATINS |
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| CHEN LI-JUAN,PENG BI-XIAN.THE ISOELECTRIC POINT DISTRIBUTION OF MODIFIED GELATINS[J].Imaging Science and Photochemistry,1984,2(4):13-19. |
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| Authors: | CHEN LI-JUAN PENG BI-XIAN |
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| Affiliation: | Institute of Photographic Chemistry, Academia Sinica |
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| Abstract: | Modified gelatin is widely used as coagulating agent in photographic emulsion-making, but the coagulation mechanism is still obscure. The isoelectric point distribution is one of the most important factors affecting the coagulating property of modified gelatin. In the present work the new technique of isoelectric focusing with some modifications is used in the determination of the isoelectric points of parent and modified gelatins. The experimental data can be used to account for the reason why modified gelatin and the photographic emulsion prepared with it can be coagulated only within a definite range of pH. |
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