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Mussel-inspired novel high adhesive UV-curable polyurethane/polysiloxane pressure sensitive adhesive
Progress in Organic Coatings ( IF 6.6 ) Pub Date : 2022-01-20 , DOI: 10.1016/j.porgcoat.2021.106692
Chang-An Xu 1, 2 , Mangeng Lu 1, 1, 2, 3 , Xiaohua Cui 1, 2 , Xiankun Wu 1, 2 , Enxiang Jiao 1, 2 , Ending Zhang 1, 2 , Kun Wu 1, 2, 4 , Jun Shi 1, 2, 5
Affiliation  

Biomaterials provide inspiration for the assembly of preparation molecules into complex structures. There is more catecholic amino acid dihydroxyphenylalanine in mussel's holdfasts, which is beneficial to enhance the interfacial adhesion to the marine surfaces. Although there are numerous scholars on mussel-mimicking polymers, there are still insufficient researches on structure-property relations, especially on the effect of carboxyl structure on polymer properties. Inspired by this, the monomers with different carboxyl functional groups are synthesized in this report. A series of pressure sensitive adhesives (PSAs) are feasibly tailored by introducing the novel monomers (MCA, MCAB, MCAP) into PSAs through photo-polymerization. The effect of benzene monomers with different carboxyl groups on the adhesive properties of the PSAs is further studied. The results show that with the increase of carboxyl groups on the benzene ring, the 180° peel strength and shear strength of PSAs (SPU-8-MCAP) are increased by 180.0% and 46.2%, respectively. Additionally, the heat resistance and carbon residue rate of PSAs have also been improved, mainly due to the introduction of carboxyl groups to strengthen the intermolecular or intramolecular interactions. Density functional theory (DFT) proves that the increase of carboxyl group content is indeed beneficial to strengthen the interaction between molecules. It is anticipated that these studies will contribute to the design of future biomimetic systems and promote the progress of carboxyl monomers in adhesives.



中文翻译:

受贻贝启发的新型高粘合剂 UV 固化聚氨酯/聚硅氧烷压敏粘合剂

生物材料为制备分子组装成复杂结构提供了灵感。贻贝的固持剂中含有较多的儿茶酚氨基酸二羟基苯丙氨酸,有利于增强与海洋表面的界面附着力。尽管关于拟贻贝聚合物的学者众多,但对结构-性能关系,尤其是羧基结构对聚合物性能影响的研究还不够。受此启发,本报告合成了具有不同羧基官能团的单体。通过光聚合将新型单体 (MCA、MCAB、MCAP) 引入 PSA 中,可以定制一系列压敏粘合剂 (PSA)。进一步研究了具有不同羧基的苯单体对压敏胶粘合性能的影响。结果表明,随着苯环上羧基的增加,PSAs(SPU-8-MCAP)的180°剥离强度和剪切强度分别提高了180.0%和46.2%。此外,PSA的耐热性和残炭率也得到了提高,这主要是由于引入了羧基以加强分子间或分子内的相互作用。密度泛函理论(DFT)证明,羧基含量的增加确实有利于加强分子间的相互作用。预计这些研究将有助于未来仿生系统的设计,并促进羧基单体在粘合剂中的进展。结果表明,随着苯环上羧基的增加,PSAs(SPU-8-MCAP)的180°剥离强度和剪切强度分别提高了180.0%和46.2%。此外,PSA的耐热性和残炭率也得到了提高,这主要是由于引入了羧基以加强分子间或分子内的相互作用。密度泛函理论(DFT)证明,羧基含量的增加确实有利于加强分子间的相互作用。预计这些研究将有助于未来仿生系统的设计,并促进羧基单体在粘合剂中的进展。结果表明,随着苯环上羧基的增加,PSAs(SPU-8-MCAP)的180°剥离强度和剪切强度分别提高了180.0%和46.2%。此外,PSA的耐热性和残炭率也得到了提高,这主要是由于引入了羧基以加强分子间或分子内的相互作用。密度泛函理论(DFT)证明,羧基含量的增加确实有利于加强分子间的相互作用。预计这些研究将有助于未来仿生系统的设计,并促进羧基单体在粘合剂中的进展。分别。此外,PSA的耐热性和残炭率也得到了提高,这主要是由于引入了羧基以加强分子间或分子内的相互作用。密度泛函理论(DFT)证明,羧基含量的增加确实有利于加强分子间的相互作用。预计这些研究将有助于未来仿生系统的设计,并促进羧基单体在粘合剂中的进展。分别。此外,PSA的耐热性和残炭率也得到了提高,这主要是由于引入了羧基以加强分子间或分子内的相互作用。密度泛函理论(DFT)证明,羧基含量的增加确实有利于加强分子间的相互作用。预计这些研究将有助于未来仿生系统的设计,并促进羧基单体在粘合剂中的进展。密度泛函理论(DFT)证明,羧基含量的增加确实有利于加强分子间的相互作用。预计这些研究将有助于未来仿生系统的设计,并促进羧基单体在粘合剂中的进展。密度泛函理论(DFT)证明,羧基含量的增加确实有利于加强分子间的相互作用。预计这些研究将有助于未来仿生系统的设计,并促进羧基单体在粘合剂中的进展。

更新日期:2022-01-20
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