影像科学与光化学 ›› 1996, Vol. 14 ›› Issue (1): 14-19.DOI: 10.7517/j.issn.1674-0475.1996.01.14

• 研究论文 • 上一篇    下一篇

热处理对照相明胶溶液粘度和分子量分布的影响

傅延勋, 阎天堂, 饶秀芝   

  1. 中国科学技术大学化学物理系, 合肥230026
  • 收稿日期:1995-03-14 修回日期:1995-05-25 出版日期:1996-02-20 发布日期:1996-02-20
  • 通讯作者: 傅延勋
  • 基金资助:
    国家自然科学基金

THE EFFECT OF HEAT TREATMENT ON THE VISCOSITY AND THE MOLECULAE WEIGHT DISTRIBUTION OF PHOTOGRAPHIC GELATINS

FU Yanxun, YANTiantang, RAO Xiuzhi   

  1. Department of Chemical physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
  • Received:1995-03-14 Revised:1995-05-25 Online:1996-02-20 Published:1996-02-20

摘要: 本文以四种照相明胶为研究对象,探讨热处理对照相明胶溶液粘度和分子量分布的影响。实验结果表明,随着加热温度上升,照相明胶溶液粘度下降,数均分子量下降。照相明胶溶液粘度和数均分子量密切相关,照相明胶溶液粘度下降发生的内在原因是数均分子量下降。在本实验条件下,惰胶、活性胶的加热温度不超过75℃,PA胶的加热温度不超过60℃。

关键词: 照相明胶, 粘度, 分子量分布, 热处理

Abstract: Thepaper presents a study on the effect of heat treatment on the viscosity and the molecular weight distribtuon of the four photographic gelatins.The experimental results indicate that the viscosity and the number average molecular weight of photographic gelatins are decreased when the heating temperature is increased.The viscosity and the number average molecular weight of photographic gelatins are closely related.Caused by decreasing of the number average molecular weight,the viscosity of photographic gelatins is decreased.Under our experimental condition,the critical heating temperature of inert gelatin and active gelatin is proposed less than 75℃ and less than 60℃ respectively for modified gelatin.

Key words: photographic gelatins, viscosity, molecular weight distribution, heat treatment