Novel waterborne polyurethanes extended by glycerol monostearate: their synthesis and application to water repellency

IF 2.6 4区化学 Q3 POLYMER SCIENCE Journal of Polymer Research Pub Date : 2025-01-14 DOI:10.1007/s10965-025-04256-9

Haitao Zhou, Yan Liu, Tianhao Lu, Wulin Xia, Ying Qin, Guankun Kuang, Binjie Xin

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Abstract

In this paper, a string of waterborne polyurethane (WPU) emulsions synergistically modified with PDMS and GMS were successfully prepared by incorporating Polydimethylsiloxane (PDMS) into the soft segments of waterborne polyurethanes, and using glycerol monostearate (GMS) as a chain extender. FTIR, TGA, SEM, particle size test, water contact angle and other tests were used to characterize the effects of variable GMS contents on the structure and function of WPUs. The experimental tests showed that the WPUs synthesised with 30% PDMS-8% GMS synergism had better overall performance. The water contact angle could reach 115.4°, and the water absorption was reduced to 10.52% at 72 h. Furthermore, this innovative WPU film had excellent thermal stabilization, and this study provided a new approach to improve waterproofing performance, hydrophobicity and thermal stability of waterborne polyurethanes, which is expected to be applied in coatings, adhesives and water-resistant agents.

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由单硬脂酸甘油扩展的新型水性聚氨酯：它们的合成和防水应用

本文通过在水性聚氨酯的软段中加入聚二甲基硅氧烷（PDMS），以单硬脂酸甘油（GMS）为扩链剂，成功制备了PDMS和GMS协同改性的水性聚氨酯（WPU）乳液。通过FTIR、TGA、SEM、粒度测试、水接触角等测试表征不同GMS含量对wpu结构和功能的影响。实验结果表明，30% PDMS-8% GMS协同合成的wpu具有较好的综合性能。水接触角可达115.4°，72 h吸水率降至10.52%。此外，该创新WPU膜具有优异的热稳定性，为提高水性聚氨酯的防水性能、疏水性和热稳定性提供了新的途径，有望应用于涂料、胶粘剂和防水剂中。

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来源期刊

Journal of Polymer Research 化学-高分子科学

CiteScore

4.70

自引率

7.10%

发文量

472

审稿时长

3.6 months

期刊介绍： Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology, including: polymer synthesis; polymer reactions; polymerization kinetics; polymer physics; morphology; structure-property relationships; polymer analysis and characterization; physical and mechanical properties; electrical and optical properties; polymer processing and rheology; application of polymers; supramolecular science of polymers; polymer composites.