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化学学报
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化学学报 ›› 2008, Vol. 66 ›› Issue (11): 1293-1300. 上一篇    下一篇

研究论文

新颖表面结构的脲醛树脂-聚丙烯酰胺复合微球的制备研究

孙莉峰，张颖*，吴华涛，房喻，胡道道   

  1. (应用表面与胶体化学教育部重点实验室 陕西师范大学化学与材料科学学院 西安 710062)
  • 投稿日期:2007-10-26 修回日期:2008-01-27 发布日期:2008-06-14
  • 通讯作者: 张颖

Preparation of Urea-formaldehyde Resin/Polyacrylamide Composite Microspheres with Novel Surface Structures

SUN, Li-Feng; ZHANG, Ying*; WU, Hua-Tao; FANG, Yu; HU, Dao-Dao   

  1. (Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062)
  • Received:2007-10-26 Revised:2008-01-27 Published:2008-06-14
  • Contact: ZHANG, Ying

PDF

1045

被引次数

7 | 2

将高分子微凝胶模板法应用于制备脲醛树脂[Urea-formaldehyde resin (UF Resin)]-聚丙烯酰胺[Polyacrylamide (PAM)]有机-有机复合微球材料. 以PAM高分子微凝胶为模板, 通过控制甲醛和尿素的缩聚反应在反相悬浮体系中进行, 制备得到了具有新颖表面形貌的脲醛树脂-聚丙烯酰胺[UF Resin/PAM]有机-有机复合微球, 利用扫描电子显微镜(SEM)、热重分析(TGA)、红外(FT-IR)等手段对复合微球进行了表征. 实验结果表明, 复合微球的表面形貌与甲醛和尿素溶液的pH值、甲醛和尿素溶液的浓度、甲醛和尿素的摩尔比、模板的组成等因素有关. 可以预期, 本研究方法将为制备具有特异表面形貌的有机-有机复合微球材料提供了一条有效的途径.

关键词: 微凝胶, 脲醛树脂, 复合微球, 模板法

The application of a polymer microgel template method was extended for the preparation of urea-formaldehyde resin and polyacrylamide organic/organic composite microspheres. The UF Resin/PAM composite microspheres with novel surface morphology were prepared via polycondensation between form- aldehyde and urea in the inverse suspension system using PAM microgels as a template. The prepared composite microspheres were characterized by scanning electron microscopy, thermogravimetric analysis, and Fourier transform infrared spectrometer techniques. It was demonstrated that the surface morphologies of the composite microspheres could be controlled by varying the pH value and concentrations of the formaldehyde and urea solutions, the molar ratio of formaldehyde to urea and the composition of the used template. It was expected that the proposed methodology could provide an effective path to synthesis of organic-organic composite microspheres with special surface morphologies.

Key words: microgel, urea-formaldehyde resin, composite microsphere, template method