影像科学与光化学 ›› 2005, Vol. 23 ›› Issue (1): 6-13.DOI: 10.7517/j.issn.1674-0475.2005.01.6

• 研究论文 • 上一篇    下一篇

AgBr的尺寸及含量对PVA为粘合剂的光敏热成像材料的光敏性的影响

曹静, 林海莉, 姚林辉, 智欣, 李金培, 夏培杰   

  1. 1. 中国科学院, 理化技术研究所, 北京, 100101;
    2. 中国科学院, 研究生院, 北京, 100039
  • 收稿日期:2004-07-10 修回日期:2004-10-25 出版日期:2005-01-23 发布日期:2005-01-23
  • 通讯作者: 夏培杰,研究员,E-mail:xpj@mail.ipc.ac.cn.
  • 基金资助:
    国家自然科学青年基金资助项目(20303025).

Effects of Grain Size and Content of AgBr on Sensitivity of PTG Materials Using PVA as a Hydrophilic Binder

CAO Jing, LIN Hai-li, YAO Lin-hui, ZHI Xin, LI Jin-pei, XIA Pei-jie   

  1. 1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, P. R. China;
    2. Graduate School of Chinese Academy of Sciences, Beijing 100039, P. R. China
  • Received:2004-07-10 Revised:2004-10-25 Online:2005-01-23 Published:2005-01-23

摘要: 本文以水溶性聚乙烯醇(PVA)为粘合剂,采用异位法合成不同尺寸的立方体AgBr乳剂为光敏元,考察了以硬脂酸银/溴化银为主体的光敏热成像材料体系在可见光区的光敏性与立方体AgBr颗粒尺寸以及含量之间的关系.实验结果表明:在体系中AgBr含银量确定的条件下,AgBr颗粒尺寸在100—200nm范围内,体系的光敏性最大;AgBr与AgSt的银量比在40%左右,体系的光敏性出现最大值;而AgBr乳剂中本身存在的少量明胶对体系的光敏性影响很小.

关键词: 光敏热成像材料, 光敏性, 卤化银, 热化学

Abstract: The effects of different sizes and contents of the cubic AgBr grains on the sensitivity of PTG materials were studied, in which hydrophilic polyvinyl alcohol (PVA) was used as a binder and the cubic AgBr emulsions were obtained from an ex-situ preparation. The results showed that the sensitivity of PTG reached a maximum when AgBr grain sizes were about 100—200 nm or in the ratio of 4 to 10 AgBr mol/AgSt mol. In addition, it was shown that a little gelatin introduced from the AgBr emulsion would not bring about any significant effect on the sensitivity of PTG system.

Key words: photothermographic materials, light-sensitivity, silver halide, thermochemistry

中图分类号: