橡胶技术网

合成橡胶工业
CHINA SYNTHETIC RUBBER INDUSTRY
2009 Vol.32 No.1 P.74

橡胶技术网

溶剂组成对聚氨酯微球形貌的影响

张建安  吴明元  杨建军  吴庆云  王月菊 

摘 要:将天然多元醇(蓖麻油)、聚乙二醇(PEG)和异佛尔酮二异氰酸酯通过缩聚反应制备了聚氨酯(PU)预聚物.在不添加乳化剂和助稳定剂的条件下,采用细乳化工艺得到稳定的PU细乳液.利用二乙烯三胺和异氰酸酯基团之间快速的交联反应进一步得到了PU微球.研究发现,乙酸乙酯和丙酮的配比影响微球的大小和形态,选择蓖麻油和PEG作为多元醇组分使微球具有了生物可降解性和亲水性.
关键词:聚氨酯;微球;细乳化;生物可降解性

Effects of solvent composition on morphology of polyurethane microspheres

Zhang Jian'an(School of Chemistry and Chemical Engineering,Anhui University,Hefei 230039,China)  Wu Mingyuan(School of Chemistry and Chemical Engineering,Anhui University,Hefei 230039,China)  Yang Jianjun(School of Chemistry and Chemical Engineering,Anhui University,Hefei 230039,China)  Wu Qingyun(School of Chemistry and Chemical Engineering,Anhui University,Hefei 230039,China)  Wang Yueju(School of Chemistry and Chemical Engineering,Anhui University,Hefei 230039,China) 

AbstractPolyurethane(PU) microspheres synthesized via miniemulsification technique have attracted considerable attention[1-2]. However, in or-der to obtain stable oil droplets, surfactant and co-stabilizer are essen-tial components in the miniemulsion formulations, and usually such additives are required to be removed before further applications.

基金项目:Supported by Young College Teachers Funded Research Projects of Anhui (2006 jql 031) and Open Projects of Anhui Key Laboratory of the Green Polymer Materials.
作者简介:Zhang Jian'an,lecturer,doctoral student.
作者单位:张建安(安徽大学,化学化工学院,安徽,合肥,230039) 
     吴明元(安徽大学,化学化工学院,安徽,合肥,230039) 
     杨建军(安徽大学,化学化工学院,安徽,合肥,230039) 
     吴庆云(安徽大学,化学化工学院,安徽,合肥,230039) 
     王月菊(安徽大学,化学化工学院,安徽,合肥,230039) 

参考文献:

[1]Sumant P,Ashavani K,Vinod V P.et al.Direct assembly of gold nanoparticle "Shells" on polyurethane microsphere "Cores" and their application as enzyme immobilization templates[J].Chem Mater,2003,15(10):1944-1949.
[2]Daniel C,Michael S,Carola H R,et al.Polymeric nanoreactots for hydrophilic reagents synthesized by interracial polycondensation on miniemulsiou droplets[J].Macromolecules,2007,40(9):3122-3135.
[3]Li M,Daniels E S,Dimonie V,et al.Preparation of polyurethane/ acrylic hybrid uanoparticles via a miniemulsion polymerization process[J].Macromolecules,2005,38 (10):4183-4192.

收稿日期:2008年7月15日

出版日期:2009年1月15日

请看PDF全文