影像科学与光化学 ›› 2008, Vol. 26 ›› Issue (4): 265-270.DOI: 10.7517/j.issn.1674-0475.2008.04.265

• 研究论文 • 上一篇    下一篇

AgSt/AgBr复合物的制备及其热行为研究

曹静1, 林海莉1, 刘春萍2, 王俊恩1, 邵新1   

  1. 1. 淮北煤炭师范学院, 化学系, 安徽, 淮北, 235000;
    2. 鲁东大学, 化学与材料科学学院, 山东, 烟台, 264025
  • 收稿日期:2007-11-28 修回日期:2008-02-17 出版日期:2008-07-23 发布日期:2008-07-23
  • 通讯作者: 曹静(1979-), 男, 副教授, 博士, 从事成像材料以及绿色材料研究.
  • 基金资助:
    安徽省教育厅自然科学基金(KJ2008864ZC,KJ20088100ZC);安徽省高校青年教师资助计划项目(2007JQ1157,2008JQ1073).

Study on the Synthesis and Thermal Behavior of AgSt/AgBr Composite

CAO Jing1, LIN Hai-li1, LIU Chun-ping2, WANG Jun-en1, SHAO Xin1   

  1. 1. Department of Chemistry, Huaibei Coal Industry Teachers College, Huaibei 235000, Anhui, P.R.China;
    2. College of Chemistry and Materials Science, Ludong University, Yantai 264025, Shandong, P.R.China
  • Received:2007-11-28 Revised:2008-02-17 Online:2008-07-23 Published:2008-07-23

摘要: 分别以溴化钠(NaBr)为溴源、硬脂酸银(AgSt)为底物,用原位法合成了复合物AgSt/AgBr.利用红外光谱(FTIR)、扫描电子显微镜(SEM)、X射线衍射(XRD)与热重-差示扫描量热(TG-DSC)技术对复合物的结构、尺寸、形貌、晶型以及热行为进行了表征.结果表明,1)复合物由底物AgSt与尺寸为30—50nm的外延立方体AgBr粒子构成;2)AgSt/AgBr复合物在较低的温度下出现两个新的吸热相变峰,分别对应于97.8℃和108.8℃;3)AgSt/AgBr复合物的起始分解温度较AgSt也有所降低.

关键词: 硬脂酸银, 溴化银, 复合物, 相变, 光敏热成像材料

Abstract: AgSt/AgBr composite was synthesized by in situ method,which NaBr and silver stearate(AgSt) was respectively used as bromide source and substrate.The structure,size,morphology and crystal form of AgSt/AgBr composite was respectively measured by FTIR,SEM,XRD,as well as the thermal behavior investigated by TG-DSC.The results showed:(1) that AgSt/AgBr composite was composed of substrate AgSt and epitaxial cubic AgBr particles with sizes ranging from 30 to 50 nm;(2) that two new phase transition peaks appeared at 97.8 ℃ and 108.8 ℃ respectively for AgSt/AgBr composite;(3) the start decomposition temperature of AgSt/AgBr composite decreased a little than that of AgSt.

Key words: silver stearate, silver bromide, composite, phase transition, photothermographic materials

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