Bio-Based Polyurethane-Urea with Self-Healing and Closed-Loop Recyclability Synthesized from Renewable Carbon Dioxide and Vanillin

作者全名："Han, Tianyi; Tian, Tongshuai; Jiang, Shan; Lu, Bo"

作者地址："[Han, Tianyi] Chongqing Med Univ, Sch Med Informat, Chongqing 400016, Peoples R China; [Tian, Tongshuai; Jiang, Shan; Lu, Bo] Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200444, Peoples R China"

通信作者："Lu, B (通讯作者)，Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200444, Peoples R China."

来源：POLYMERS

ESI学科分类：CHEMISTRY

WOS号：WOS:001305335300001

JCR分区：Q1

影响因子：5

年份：2024

卷号：16

期号：16

开始页：　

结束页：　

文献类型：Article

关键词：vanillin; carbon dioxide; polyurethane-urea; self healing; closed-loop recyclability

摘要："Developing recyclable and self-healing non-isocyanate polyurethane (NIPU) from renewable resources to replace traditional petroleum-based polyurethane (PU) is crucial for advancing green chemistry and sustainable development. Herein, a series of innovative cross-linked Poly(hydroxyurethane-urea)s (PHUUs) were prepared using renewable carbon dioxide (CO2) and vanillin, which displayed excellent thermal stability properties and solvent resistance. These PHUUs were constructed through the introduction of reversible hydrogen and imine bonds into cross-linked polymer networks, resulting in the cross-linked PHUUs exhibiting thermoplastic-like reprocessability, self healing, and closed-loop recyclability. Notably, the results indicated that the VL-TTD*-50 with remarkable hot-pressed remolding efficiency (nearly 98.0%) and self-healing efficiency (exceeding 95.0%) of tensile strength at 60 degrees C. Furthermore, they can be degraded in the 1M HCl and THF (v:v = 2:8) solution at room temperature, followed by regeneration without altering their original chemical structure and mechanical properties. This study presents a novel strategy for preparing cross-linked PHUUs with self-healing and closed-loop recyclability from renewable resources as sustainable alternatives for traditional petroleum-based PUs."

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