High molecular weight polyurethane and polymer hybrid particles in aqueous miniemulsion

被引：154
作者：
Barrère, M [1 ]
Landfester, K [1 ]
机构：
[1] Max Planck Inst Colloids & Interfaces, D-14424 Potsdam, Germany
来源：
MACROMOLECULES | 2003年 / 36卷 / 14期
关键词：
D O I：
10.1021/ma025981+
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The polycondensation of isophorone diisocyanate (IPDI) with dodecanediol has been performed in aqueous miniemulsion in order to obtain hydrophobic polyurethane dispersions. The influence of several factors, such as temperature, surfactant, and catalyst, on the molecular weight has been studied in detail. It has been found that the use of hydrophobic organo-tin catalysts, a solvent of the polyaddition medium, or an off-stoichiometric ratio of the isocyanate and the diol component permits to considerably increase the molecular weight of the polymer. It is also shown that hybrid polymer nanoparticles based on polystyrene/polyurethane (PS/PU) or poly(butyl acrylate)/polyurethane (PBA/PU) can been synthesized using a one-pot procedure.
引用
收藏
页码：5119 / 5125
页数：7
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