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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis and adhesion properties of waterborne polyurethane dispersions with long-branched aliphatic chains
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Synthesis and adhesion properties of waterborne polyurethane dispersions with long-branched aliphatic chains

机译：带有长支链脂肪族链的水性聚氨酯分散体的合成和粘合性能

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摘要

In this study, a series of waterborne polyurethanes (WPUs) with different contents of long-branched aliphatic chains were synthesized through variation of the amount of diol chain extender trimethylol propane monooleate (TMPM). The effects of the TMPM content on the adhesion properties of the WPUs were investigated in terms of their surface tension, interfacial tension, contact angle, and adhesion strength. Fourier transform infrared and H-1-NMR spectra demonstrated the successful incorporation of TMPM into the polyurethanes. An increase in the TMPM content produced decreases in the surface tension of the WPUs and the interfacial tension and contact angle between the WPUs and plastic films. This indicated that the wetting properties of the WPUs on the plastic films was improved. The improved wettability enhanced the adhesion strength of the WPUs, and this showed that the long-branched aliphatic chains could effectively improve the adhesion performance of the WPUs on the plastic films. Moreover, TMPM, with its hydrophobic aliphatic chains, increased the hydrophobicity and thermal stability of the WPU films. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41688.
机译：在这项研究中，通过改变二醇扩链剂三羟甲基丙烷单油酸酯（TMPM）的量，合成了一系列具有不同含量的长支链脂肪族链的水性聚氨酯（WPU）。从表面张力，界面张力，接触角和粘合强度方面研究了TMPM含量对WPU粘合性能的影响。傅里叶变换红外光谱和H-1-NMR光谱表明，TMPM已成功掺入聚氨酯中。所产生的TMPM含量的增加降低了WPU的表面张力以及WPU与塑料膜之间的界面张力和接触角。这表明WPU在塑料膜上的润湿性能得到改善。改善的润湿性提高了WPU的粘合强度，这表明长支链脂族链可以有效提高WPU在塑料薄膜上的粘合性能。此外，TMPM及其疏水性脂肪族链增加了WPU膜的疏水性和热稳定性。 （c）2014 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41688。

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