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化学学报
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化学学报 ›› 2007, Vol. 65 ›› Issue (12): 1161-1164. 上一篇    下一篇

研究论文

界面法合成聚糠醛纳米球

苏碧桃*, 佟永纯, 王克, 白洁, 董娜, 慕红梅, 敏世雄, 佘世雄, 雷自强   

  1. (西北师范大学化学化工学院 省部共建生态环境相关高分子材料教育部重点实验室
    甘肃省高分子材料重点实验室 兰州 730070)
  • 投稿日期:2006-06-23 修回日期:2007-01-06 发布日期:2007-06-28
  • 通讯作者: 苏碧桃

Preparation of Polyfurfural Nanospheres by Interfacial Polymerization

SU Bi-Tao*; TONG Yong-Chun; WANG Ke; BAI Jie; DONG Na; MU Hong-Mei; MIN Shi-Xiong; SHE Shi-Xiong; LEI Zi-Qiang   

  1. (Key Laboratory of Eco-Environment-Related Polymer Materials, Key Labortory of Gansu Polymer Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070)
  • Received:2006-06-23 Revised:2007-01-06 Published:2007-06-28
  • Contact: SU Bi-Tao

PDF

951

被引次数

25 | 4

采用界面自组装聚合的方法, 成功地制备出聚糠醛纳米球, 利用TEM, FT-IR, XRD, GPC及TG-DTA等技术对其形貌、结构等进行了表征, 并考查了单体浓度、催化剂用量以及乳化剂的存在与否对聚糠醛形貌等的影响. 结果表明, 由该方法合成的聚糠醛为不规则的结晶结构, 当乳化剂浓度在临界胶束浓度cmc附近、单体浓度在3～5 mol•L－1、催化剂的用量在10 mol•L－1左右时, 能够得到成球性好、粒径分布范围窄、平均尺寸在100 nm左右的聚糠醛纳米球结构材料. 利用该法在上述优化条件下合成的聚糠醛的Mw＝2451, Mw/Mn＝1.14, 且分子量分布窄. 聚糠醛分子链的柔韧性较强, 具有很好的加工性能. 该法具有合成条件温和、易于控制、纯化简单等众多优点, 而且省去了使用模板/消除模板的过程, 能够一步合成出大量聚糠醛纳米球.

关键词: 聚糠醛, 纳米球, 界面聚合, 自组装, 表征

Polyfurfural (PF) nanospheres have been successfully synthesized by interfacial polymerization (IP). TEM, FT-IR, GPC, XRD and TG-DTA are used to characterize the nanospheres with regard to their morphologies and structures. The effects of the concentrations of monomer, catalyst and emulsifier on the polymer nanosphere are investigated. The results show that PF has the irregular crystalline structure and the distribution of the nanospheres size is narrow and uniform with the diameter 100 nm when emulsifier concentration is round critical micellization concentration, monomer concentration 3～5 mol/L and catalyst concentration around 10 mol/L. At the optimum conditions, with Mw＝2451 and the narrow molecular weight distribution, PF nanosphere material has been obtained. PF has a very good flexibility which entrust the processibility to the polymer. For the interfacial self-assembly polymerization, its conditions are mild and it is easy to handle and purify the products without employing/removing template approach and the yield is also high.

Key words: polyfurfural, nanosphere, interfacial polymerization, self-assemble, characterization