GGC型高感乳剂沉降剂的研制

doi:10.7517/j.issn.1674-0475.1993.02.49

影像科学与光化学 ›› 1993, Vol. 11 ›› Issue (2): 49-55.DOI: 10.7517/j.issn.1674-0475.1993.02.49

GGC型高感乳剂沉降剂的研制

刘宣亚, 彭必先

中国科学院感光化学研究所, 北京 100101

收稿日期:1992-04-30 修回日期:1992-11-22 出版日期:1993-05-20 发布日期:1993-05-20
通讯作者: 彭必先

MODIFIED GELATIN (TYPE GGC) AS COAGULATING AGENT IN HIGH SPEED EMULSION

LIU XUAN-YA, PENG BI-XIAN

Institute of Photographic Chemistry, Academia Sinica, Beijing 100101, China

Received:1992-04-30 Revised:1992-11-22 Online:1993-05-20 Published:1993-05-20

摘要/Abstract

摘要： 氨法乳剂在微粒高感中起着重要的作用,PA改性胶只能适用于中性法高感乳剂沉降。寻求适用于氨法乳剂制备时所用的改性明胶(GGC型)具有重要的意义。本文研究了多种改性明胶的合成。取代度的测定,沉降条件和复溶性能,沉降过程中明胶及卤化银的回收率以及改性明胶卤化银乳剂的感光性能等。研究结果表明,GGC型改性明胶具有以下的优点:取代度高。沉降诱发期短,沉降的pH范围窄,卤化银的回收率高。在用作氨法乳剂沉降剂时,GGC改性胶远比PA胶优异,表现在:耗酸量少和感光度高。

关键词: 沉降剂, 改性明胶, 乳剂制备

Abstract: The problem how to raise the isoelectric point and salt effect of modified gelatin for coagulating emulsions of ammonical metnod has been attracting the attention of gelatin researchers. The present study is devoted to the following items:1) Synthesis of different modified gelatin with higher isoelectric point and better salt effect.2) Substitution degree evaluation.3) Iso-electric point determination with iso-electric focusing method.4) Coagulating and re-dispersing performances.5) Evaluation of recovery of silver halide and gelatin after coagulating.6) Sensitometric characteristics of emulsions prepared with GGC modified gelatin.Being as a coagulating agent of emulsion of ammonical method, GGC gelatin is superior to PA gelatin due to much less amount of acid required to start coagulation and higher sensitivity of the emulsion.

Key words: coagulating agent, modified gelatin, emulsion preparation

刘宣亚, 彭必先. GGC型高感乳剂沉降剂的研制[J]. 影像科学与光化学, 1993, 11(2): 49-55.

LIU XUAN-YA, PENG BI-XIAN. MODIFIED GELATIN (TYPE GGC) AS COAGULATING AGENT IN HIGH SPEED EMULSION[J]. Imaging Science and Photochemistry, 1993, 11(2): 49-55.

[1]	卢翌, 姜磊, 王素娥. 新型中空卤化银颗粒乳剂的制备和性能研究 Ⅰ.中空卤化银颗粒乳剂的制备与观察[J]. 影像科学与光化学, 1997, 15(4): 297-302.
[2]	彭必先, 林洛. 卤化银成像体系乳剂与有机物的研究进展[J]. 影像科学与光化学, 1995, 13(3): 258-272.
[3]	段培成, 王宗云, 周本茂. 乳剂敏化过程中的某些因素对低照度互易律失效的影响[J]. 影像科学与光化学, 1988, 6(1): 23-27.

GGC型高感乳剂沉降剂的研制

MODIFIED GELATIN (TYPE GGC) AS COAGULATING AGENT IN HIGH SPEED EMULSION

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