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无机材料学报

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以PSA-A乳胶粒为模板批量制备TiO2空心球

韩春蕊; 吕伟丽; 吴秀勇; 傅洵; 胡正水   

  1. 岛科技大学化学与分子工程学院, 青岛 266042
  • 收稿日期:2004-10-26 修回日期:2005-01-18 出版日期:2005-11-20 网络出版日期:2005-11-20

Batch Preparation of TiO2 Hollow Spheres by Templating Against PSA-A Latex

HAN Chun-Rui; LU Wei-Li; WU Xiu-Yong; FU Xun; HU Zheng-Shui   

  1. Academy of Chemistry and Molecular Engineering; Qingdao University of Science and Technology; Qingdao 266042, China
  • Received:2004-10-26 Revised:2005-01-18 Published:2005-11-20 Online:2005-11-20

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摘要： 以表面富载马来酸羧基的聚(苯乙烯-丙烯酸酯)阴离子(PSA-A)乳胶粒为模板,硫酸钛为原料,水为分散介质,制备了PSA-A/钛水解产物核壳微球,然后在空气中适当温度下煅烧得到粒径约为450nm的TiO2空心球壳,用TG、SEM、TEM、IR和XRD对样品进行了分析表征,并研究了核壳结构形成的过程和各实验条件对陈化过程中体系pH值变化速率的影响.得出影响核壳结构的关键因素为体系的pH值变化速率,以此依据设计出钛盐浓度为1mol/L,乳胶粒浓度为230g/L的高浓度条件下批量制备TiO2空心球壳的新实验方案,最终产物保持良好的空心球结构.

关键词: TiO2, 空心球, PSA-A, 批量, pH值

Abstract: With Ti(SO4)2 as raw material, and water as dispersion medium, the PSA-A latex/titanium hydrolysis compounds core-shell microspheres were prepared by templating against PSA-A latex with carboxyl. The TiO2 hollow spheres of 450nm were obtained by calcining the as-prepared core-shell microspheres. TG-DSC, SEM, TEM, IR and XRD measurements were used to characterize the samples. The investigations of the core-shell formatting process and the effect of experimental conditions on pH value changes indicated that the varing rate of pH value was the determining factor for a successful coating. The optimum varing rate of pH value for core-shell microspheres formation was obtained and TiO2 hollow spheres were prepared in batches under the conditions of 230g/L PSA-A latex and 1mol/L Ti(SO4)2.

Key words: TiO2, hollow spheres, PSA-A, patch, pH value

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