稳定剂和防灰雾剂对溴碘化银T-颗粒乳剂微晶体电性能的影响

利用Wagner极化法研究稳定剂和防灰雾剂对溴碘化银T-颗粒乳剂微晶体的电子电导率和空穴电导率的影响。实验结果表明:将乙基巯基四氮唑、吗啡啉-4-甲酸硫代-(1-苯基四氮唑-5)酯、苯并三氮唑甲酸苯酯、2-甲基巯基-4-羟基-6-甲基-1,3,3a,7-四氮茚等4种稳定剂和防灰雾剂用在溴碘化银T-颗粒乳剂中,对乳剂电性能都有一定的影响。其中,乙基巯基四氮唑防灰雾剂的影响最为显著。研究表明:添加了稳定剂和防灰雾剂的溴碘化银T-颗粒乳剂微晶体的电性能与其防灰雾性能具有较好的相关性。当稳定剂和防灰雾剂使溴碘化银T-颗粒乳剂微晶体的电子电导率和空穴电导率增大时,乳剂的稳定性和防灰雾性能就增强。

Effect of Stabilizer and Antifoggant on the Electric Properties of Silver Bromide Iodide T-Grain Emulsion

By applying Wagner polarization measurement,the effect of antifoggants on electron conductivity and hole conductivity of silver bromide iodide T-grain emulsions was studied.Results showed that,when used as doponts,four kinds of antifoggants,1-ethyl-1H-tetrazole-5-thiol,morpholine-4-carbothioic acid S-(1-phenyl-1-tetrazole-5-yl) ester,1H-benzotriazole-carboxylic acid phenyl ester and(2-(methylthio))-4-ol-6-methyl- triazolo pyrimidine all possessed a certain effect on the electric property of silver bromide iodide T-grain emulsion,with 1-ethyl-1H-tetrazole-5-thiol antifoggant(indicating) the strongest effect.There was a close relationship between the electric property of silver bromide iodide T-grain emulsion added with stabilizer and antifoggant and anti-fog property of the emulsion,i.e.,when the electron conductivity and hole conductivity of silver bromide iodide T-grain emulsions(increased) due to stabilizer and antifoggant,the stability and anti-fog property of the emulsions would be(enhanced.)