| 明胶酯化及酞酰化对于沉降性能的影响 |
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| 引用本文： | 陈砥,彭必先.明胶酯化及酞酰化对于沉降性能的影响[J].影像科学与光化学,1985,3(4):55-56. |
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| 作者姓名： | 陈砥 彭必先 |
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| 作者单位： | 1. 青岛明胶厂;2. 中国科学院感光化学研究所 |
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| 摘 要： | 酞酰化明胶作为中、低感光乳剂的沉降剂已经得到了广泛的应用。这个沉降剂的优点是沉降pH范围较窄,沉降速度较快,有增感作用,复溶容剔。它的主要缺点就是不适用于氨法高感乳剂。究其原因,主要是由于PA改性明胶的等电点比较低。
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| 收稿时间： | 1985-05-04 |
THE INFLUENCE OF ESTERIFICATION AND PHTHALATION ON THE COAGULATING PROPERTY OF PHOTOGRAPHIC GELATIN |
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| CHEN DI,PENG BI-XIAN.THE INFLUENCE OF ESTERIFICATION AND PHTHALATION ON THE COAGULATING PROPERTY OF PHOTOGRAPHIC GELATIN[J].Imaging Science and Photochemistry,1985,3(4):55-56. |
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| Authors: | CHEN DI PENG BI-XIAN |
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| Institution: | 1. Qingdao Gelatin Factory;2. Institute of Photographic Chemistry, Academia Sinica |
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| Abstract: | The combined modification (phthalation followed esterification) of gelatin and the effect of esterification on the isoelectric point of phthalated gelatin were studied. The experimental results showed. 1. The isoeleetric point of the parent alkali-processed gelatin is 4.57. 2. After the carboxy groups of gelatin were esterified with ethanol, the isoeleetric point of esterified gelatin may be raised up to 5.78 even to 9.60 depending on the degree of esterification. 3. The isoeleetric point of esterified and then phthalated gelatin (PEA gelatin) was 0.48 pH unit higher than that of phthalated gelatin (PA gelatin). 4. The coagulating property of PA and PEA gelatin differs greatly. |
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