Linear polyurethanes with excellent comprehensive properties from poly(ethylene carbonate) diol

IF 9.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chinese Chemical Letters Pub Date : 2024-07-10 DOI:10.1016/j.cclet.2024.110236

Xinyu Liu, Jialin Yang, Zonglin He, Jiaoyan Ai, Lina Song, Baohua Liu

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Abstract

The synthesis of polyurethanes (PUs) from the reaction of low molecular weight poly(ethylene carbonate) diol (PECD) is rarely investigated. This work reports a novel PU with excellent mechanical properties from the solution polymerization of 4,4′-diphenylmethane diisocyanate (MDI) with PECD that was derived from the copolymerization of carbon dioxide (CO₂) and ethylene oxide (EO). The tensile strength, the elongation at break and 300 % constant tensile strength of the PECD-PU were up to 66 ± 2 MPa, 880 % ± 50 % and 13 MPa, respectively, higher than the control PUs from the reaction of MDI with commercial polyethers or polyesters. The PECD-PU with high CO₂ carbonate content exhibited good solvent resistance and chemical stability. Of importance, the mechanical properties and chemical resistance of PECD-PU were significantly enhanced with the increasing content of CO₂, i.e., the carbonate unit in PECD. This work provides comprehensive properties of PECD-derived PUs, indicating that PECD is a competitive precursor for the preparation of PU and has broad application prospects.

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具有优异综合性能的聚碳酸乙二醇线型聚氨酯

由低分子量聚（碳酸乙烯）二元醇（PECD）反应合成聚氨酯（PUs）的研究很少。这项工作报告了一种新型聚氨酯，它具有优异的机械性能，由 4,4′-二苯基甲烷二异氰酸酯（MDI）与 PECD 溶液聚合而成，PECD 由二氧化碳（CO2）和环氧乙烷（EO）共聚而成。PECD-PU 的拉伸强度、断裂伸长率和 300 % 恒定拉伸强度分别高达 66 ± 2 兆帕、880 % ± 50 % 和 13 兆帕，高于 MDI 与商用聚醚或聚酯反应生成的对照 PU。二氧化碳碳酸盐含量高的 PECD-PU 具有良好的耐溶剂性和化学稳定性。重要的是，PECD-PU 的机械性能和耐化学性随着 CO2（即 PECD 中的碳酸单元）含量的增加而显著提高。这项研究提供了 PECD 衍生聚氨酯的全面特性，表明 PECD 是制备聚氨酯的一种有竞争力的前驱体，具有广阔的应用前景。

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来源期刊

Chinese Chemical Letters 化学-化学综合

CiteScore

14.10

自引率

15.40%

发文量

8969

审稿时长

1.6 months

期刊介绍： Chinese Chemical Letters (CCL) (ISSN 1001-8417) was founded in July 1990. The journal publishes preliminary accounts in the whole field of chemistry, including inorganic chemistry, organic chemistry, analytical chemistry, physical chemistry, polymer chemistry, applied chemistry, etc.Chinese Chemical Letters does not accept articles previously published or scheduled to be published. To verify originality, your article may be checked by the originality detection service CrossCheck.