Synthesis and characterization of polyurethane dispersions based on diaminocarboxylate

LI Jiefeng; SUN Dongcheng

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Synthesis and characterization of polyurethane dispersions based on diaminocarboxylate

更新时间：2025-12-10

- Synthesis and characterization of polyurethane dispersions based on diaminocarboxylate
- CIESC Journal Issue 10, Pages: 2726-2730(2010)
- 作者机构：
  
  华南理工大学化学与化工学院
- 作者简介：
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- Online First：05 October 2010，
  
  Published：05 October 2010
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LI Jiefeng, SUN Dongcheng. Synthesis and characterization of polyurethane dispersions based on diaminocarboxylate[J]. CIESC Journal, 2010, (10): 2726-2730.
DOI：

LI Jiefeng, SUN Dongcheng. Synthesis and characterization of polyurethane dispersions based on diaminocarboxylate[J]. CIESC Journal, 2010, (10): 2726-2730. DOI：

摘要

以乙二胺和丙烯酸甲酯为原料，采用Michael加成反应合成了新型亲水单体N-（2-氨基乙基）-氨基丙酸钠（AAA-Na）。研究表明，得到了预期结构的AAA-Na。以AAA-Na作为亲水单体，以聚己二酸1〖DK〗

4-丁二醇酯(PBA)、异佛尔酮二异氰酸酯（IPDI）、乙二胺(EDA)和二乙醇胺(DEA)为原料，采用丙酮法合成了固含量40%以上的聚氨酯分散体（PUD）。PUD的ζ电位处于-40～-60 mV之间，具有良好的稳定性。亲水基团含量（HGC）的增加使PUD胶粒平均粒径变小，黏度增加。透射电镜（TEM）显示，PUD胶粒多为大小不一的球形结构，呈二元分布。PUD胶膜的拉伸强度都超过17 MPa，伸长率在1400%左右;邵氏硬度都超过80; 吸水率不超过10%。TGA测试显示PUD胶膜的起始分解温度约为270℃，至500℃时基本分解完毕。

Abstract

A new type of hydrophilic monomer N-(2-aminoethyl)-aminopropionate sodium (AAA-Na) was synthesized by the Michael addition reaction using ethylene diamine and methyl acrylate as raw materials.Polyurethane dispersions (PUDs) with solid content above 40% were synthesized by the acetone process using N-(2-aminoethyl)-aminopropionate sodium(AAA-Na) as hydrophilic monomer

poly(1

4- butanediol adipate) (PBA)

isophorone diisocyanate (IPDI)

ethylene diamine (EDA) and diethanolamine (DEA) as raw materials.The zeta potentials of PUDs were between -40 mV and -60 mV and displayed excellent stabilization.When hydrophilic group content (HGC) increased

average particle size decreased

particle size distributions narrowed and viscosity increased.TEM analysis showed spherical shapes of the particles with different sizes and multivariate distribution.Tensile stress of PUD films all exceeded 17 MPa

tensile strain was about 1400%

Shore hardness all exceeded 80 and water absorption was all under 10%.TGA showed that initial decomposition temperature of PUD films was about 270℃

and decomposition completed basically at 500℃.

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