基于新型力色团的力致变色智能涂层材料的研究

Based on our previous studies on polymer mechanochromism, we are planning to design novel multiple color mechanophore (SP-STP), attach mechanically sensitive moiety to polymer chain and then make novel mechano-sensitive polymer materials (polyester/polyurethane) in this project. In addition, we prepare multiple color mechanophore coatings by investigating the multiple color mechanophore mechanism at the molecular level and blending polymer materials and business coatings (polyurethane coatings). We then research the mechanochromic, merocyanine stability, fatigue resistance , in order to obtain the best mechanochromic smart coating materials. According to the literature report, it is the first study of mechanically sensitive moiety derived from multiple color mechanophore for polymer mechanochemistry and propose the polymer mechanochromism concept in the application of coating materials which lay fundamental research for mechanochromism smart costings.

基于申请人在高分子力致变色方面的研究基础，本项目拟设计新型的多重变色力色团（螺吡喃并螺噻喃），并以此类力敏感单元连接到高分子链中，制备新型力响应性高分子材料（聚酯/聚氨酯），研究其力致变色，在分子水平上阐述多重变色力色团的变色机理，并且将该聚合物和商业涂料（如聚氨酯涂料）共混，制备含有多重变色力色团的涂层材料，研究涂层的力致变色性能、开环体的稳定、抗疲劳性等，以期获得优越的力致变色涂层材料。根据文献报道发现，本申请是首次提出基于多重变色力色团的力响应性，将高分子力致变色概念运用于涂层材料中，为高分子力致变色智能涂料的研究奠定基础。

合成了新型的螺吡喃力色团，并将引入到聚合物中，研究涂层的力致变色情况；同时将生物基进行改性，制备新型的Knoevenagel加成和Michael加成涂层材料，研究涂层的性能；最后制备了新型的生物基智能涂层材料，研究了涂层材料的性能。课题研究过程中，有以下几个方面的成果课题组认为有应用前景：新型螺吡喃力色团的制备及力致变色的应用；新型的Knoevenagel加成和Michael加成涂层材料以及新型的智能涂层的研究。三年内共计发表SCI 论文22 篇；中文论文3 篇；申请4项中国发明专利，有一些成果仍在整理中。