{"title":"Spider Silk-Inspired NIPU Adhesives with High Bonding Strength and Avoidance of Isocyanate Harm Derived from CO2 and Biomass","authors":"Ping Zhang, , , Yu Wang, , , Xiongxiang Wu, , , Yizhong Cao, , , Jin Wang*, , , Zhe Wang*, , and , Chunde Jin*, ","doi":"10.1021/acssuschemeng.5c06979","DOIUrl":null,"url":null,"abstract":"<p >Following the implementation of stricter environmental policies, nonisocyanate polyurethane (NIPU) adhesives are shifting toward renewable biomass and CO<sub>2</sub> utilization. However, their inferior mechanical properties compared to traditional PU hinder widespread application. Inspired by the microphase-separated structure of spider silk, this study introduces lignin as a β-sheet nanocrystal biomimetic into a linear CO<sub>2</sub>-based NIPU matrix. The resultant NIPU composite forms a three-dimensional hydrogen-bonding network formed between the hydroxyl groups of lignin and the NIPU matrix, achieving an enhanced tensile strength (15.07 MPa) and optimal bonding strength (1.52 MPa). This bioinspired strategy provides a novel route for valorizing lignin and CO<sub>2</sub> while establishing foundations for high-performance NIPU adhesives.</p>","PeriodicalId":25,"journal":{"name":"ACS Sustainable Chemistry & Engineering","volume":"13 37","pages":"15726–15737"},"PeriodicalIF":7.3000,"publicationDate":"2025-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Sustainable Chemistry & Engineering","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acssuschemeng.5c06979","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Following the implementation of stricter environmental policies, nonisocyanate polyurethane (NIPU) adhesives are shifting toward renewable biomass and CO2 utilization. However, their inferior mechanical properties compared to traditional PU hinder widespread application. Inspired by the microphase-separated structure of spider silk, this study introduces lignin as a β-sheet nanocrystal biomimetic into a linear CO2-based NIPU matrix. The resultant NIPU composite forms a three-dimensional hydrogen-bonding network formed between the hydroxyl groups of lignin and the NIPU matrix, achieving an enhanced tensile strength (15.07 MPa) and optimal bonding strength (1.52 MPa). This bioinspired strategy provides a novel route for valorizing lignin and CO2 while establishing foundations for high-performance NIPU adhesives.
期刊介绍：
ACS Sustainable Chemistry & Engineering is a prestigious weekly peer-reviewed scientific journal published by the American Chemical Society. Dedicated to advancing the principles of green chemistry and green engineering, it covers a wide array of research topics including green chemistry, green engineering, biomass, alternative energy, and life cycle assessment.
The journal welcomes submissions in various formats, including Letters, Articles, Features, and Perspectives (Reviews), that address the challenges of sustainability in the chemical enterprise and contribute to the advancement of sustainable practices. Join us in shaping the future of sustainable chemistry and engineering.
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