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利用Maxwell-Wagner效应,采用介电损耗测定法,在10kHz—3MHz的频率范围内,研究了苯亚磺酸钠(sodium benzosulfinate,简称BSI),1-苯基-5-巯基四氮唑(1-phenyl-5-mercaptotrazole,简称PMT)和5-甲基-7-羟基-1,3,4-三氮吲(口乃木)利嗪(5-methyl-7-hydroxyl-1,3,4-triazaindolizine,简称TAI)对卤化银乳剂微晶体的离子电导率的影响。加入BSI(4.76—19.07g/M AgBr)并不引起离子电导率的降低,而加入PMT和TAI(只是0.93g/M AgBr)却使离子电导率降低2个对数单位,升高了卤化银乳剂微晶体的离子电导活化能△E和表面电位eφ_s(约升高0.12eV)。进一步的研究表明:在乳剂微晶体中所含的碘,对于TAI吸附在微晶体上所引起的离子电导率的降低具有很强的抑制作用。文中对稳定剂对于离子电导性质影响的根据进行了讨论。
Using the Maxwell-Wagner effect and the dielectric loss method, the effects of sodium benzosulfinate (BSI), 1-phenyl-5-mercaptotetrazole -phenyl-5-mercaptotrazole (PMT) and 5-methyl-7-hydroxyl-1,3,4- triazaindolizine (TAI) on the ionic conductivity of silver halide emulsion microcrystals. The addition of BSI (4.76-19.07 g / M AgBr) did not cause a decrease in ionic conductivity, whereas the addition of PMT and TAI (just 0.93 g / M AgBr) decreased ionic conductivity by 2 log units, raising the silver halide The ionic conductivity activation energy △ E and surface potential eφ_s (about 0.12eV increase) of the emulsion microcrystal. Further studies show that the iodine contained in the emulsion microcrystals has a strong inhibitory effect on the decrease of the ionic conductivity caused by the adsorption of TAI on the microcrystals. The basis of the influence of stabilizer on ionic conductivity is discussed in this paper.