基于表面引发的原子转移自由基聚合和贻贝启发的化学方法对 MWCNTs 进行表面工程处理及其在自修复纳米复合水凝胶中的应用。
Surface-initiated PET-ATRP and mussel-inspired chemistry for surface engineering of MWCNTs and application in self-healing nanocomposite hydrogels.
机构信息
School of Chemistry and Materials Science, Ludong University, Key Laboratory of High Performance and Functional Polymers in the Universities of Shandong Province, Collaborative Innovation Center of Shandong Province for High Performance Fibers and Their Composites, Yantai 264025, China.
School of Chemistry and Materials Science, Ludong University, Key Laboratory of High Performance and Functional Polymers in the Universities of Shandong Province, Collaborative Innovation Center of Shandong Province for High Performance Fibers and Their Composites, Yantai 264025, China.
出版信息
Mater Sci Eng C Mater Biol Appl. 2020 Apr;109:110553. doi: 10.1016/j.msec.2019.110553. Epub 2019 Dec 13.
A green strategy by integrating surface-initiated metal-free photoinduced electron transfer-atom transfer radical polymerization (PET-ATRP) with mussel-inspired polydopamine (PDA) chemistry, was used to fabricate multi-walled carbon nanotubes (MWCNTs)/poly(4-vinylpyridine) (P4VP) nanocomposites. Self-healing nanocomposite hydrogels were facilely designed with these nanocomposites through dynamic supramolecular interactions. Using mussel-inspired PDA chemistry from MWCNTs, nanocomposites (MWCNTs@PDA-P4VP) were successfully prepared by metal-free PET-ATRP with MWCNTs@PDA-Br as an initiator, rhodamine B as photocatalyst, 4-vinylpyridine (4VP) as monomer, respectively. Importantly, the obtained nanocomposite hydrogels had high mechanical strength (2.9 MPa), prior fracture strain (633.8%) and excellent self-healing property (90.6%). These methodologies will provide opportunities for the design of eco-functional materials or flexible biosensors.
通过将表面引发的无金属光诱导电子转移-原子转移自由基聚合（PET-ATRP）与贻贝启发的聚多巴胺（PDA）化学相结合，采用绿色策略，制备了多壁碳纳米管（MWCNTs）/聚（4-乙烯基吡啶）（P4VP）纳米复合材料。通过动态超分子相互作用，这些纳米复合材料很容易设计成自修复纳米复合水凝胶。使用从 MWCNTs 中提取的贻贝启发的 PDA 化学，通过无金属 PET-ATRP 将 MWCNTs@PDA-Br 作为引发剂、罗丹明 B 作为光催化剂、4-乙烯基吡啶（4VP）作为单体，成功制备了纳米复合材料（MWCNTs@PDA-P4VP）。重要的是，所得到的纳米复合水凝胶具有高机械强度（2.9 MPa）、高初始断裂应变（633.8%）和优异的自修复性能（90.6%）。这些方法为设计生态功能材料或柔性生物传感器提供了机会。
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