Synthesis and modification of waterborne polyurethane derived from hybrid CO2-based polyols

IF 2.6 4区化学 Q3 POLYMER SCIENCE

Journal of Polymer Research Pub Date : 2024-09-30 DOI:10.1007/s10965-024-04139-5

Yueqing Chen, Zhenhong Huang, Haijian Chen, Jiaoyan Ai, Lina Song, Baohua Liu

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Abstract

Waterborne polyurethanes emulsions (WPU) based on polyethylene carbonate diol (PECD) were synthesized, characterized and modified by polypropylene carbonate diol (PPCD) and organosilicon KH-792. The mechanical, thermal and hydrolysis resistance properties of waterborne polyurethanes were comprehensively investigated. The results show that PECD based WPU has very excellent mechanical properties. The tensile strength and the elongation at break the PU was up to 73 MPa and 1040%, which was much higher than that reported for similar types of PPCD-based WPU. It was found that water absorption of PECD based WPU can be decreased dramatically, from 40.9% to 21.1%, after 50% PECD was replaced by PPCD, while tensile strength only decreased from 73.0 MPa to 63.4 MPa. The addition of KH-792 has great influence on PECD based WPU, when 1% KH-792 was added, the water absorption rate decreased from 21.1% to 11.88%, the mechanical strength remained at 63.3 MPa, the WPU film remained transparent after soaking in 80 ℃ hot water for 4 h.

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二氧化碳基混合多元醇衍生水性聚氨酯的合成和改性

对基于聚碳酸酯二元醇（PECD）的水性聚氨酯乳液（WPU）进行了合成、表征以及聚碳酸酯二元醇（PPCD）和有机硅 KH-792 的改性。对水性聚氨酯的机械性能、热性能和耐水解性能进行了全面研究。结果表明，基于 PECD 的水性聚氨酯具有非常优异的机械性能。聚氨酯的拉伸强度和断裂伸长率分别高达 73 兆帕和 1040%，远高于同类 PPCD 水性聚氨酯。研究发现，用 PPCD 取代 50% PECD 后，PECD 基 WPU 的吸水率可从 40.9% 大幅降至 21.1%，而拉伸强度仅从 73.0 MPa 降至 63.4 MPa。KH-792 的添加对基于 PECD 的 WPU 有很大影响，当添加 1% 的 KH-792 时，吸水率从 21.1% 降至 11.88%，机械强度保持在 63.3 MPa，WPU 薄膜在 80 ℃ 热水中浸泡 4 小时后仍保持透明。

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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.