| Self-Healing and Thermoreversible Self-Assembled Hydrogen-Bonding Supramolecular Rubber (National Level，in 2008) |
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Title: Self-Healing and Thermoreversible Self-Assembled Hydrogen-Bonding Supramolecular Rubber (National Level Participants: Jiawei Wang, Huang Jiang, Yongping Gao, Yue Wan Superviser: Prof. Wei Wu Introduction: In this project, new thermorebersible multiple hydrogen-bonding supramolecualr polymers are designed and synthesized from the concept that multiple hydrogen- bonding supramolecular elastomers with physical network structure are assembled from small molecules or oligomers associated by hydrogen bonds. Hydrogen-bonding supramolecular polymers are successfully prepared by one-pot synthesis from a series of amide and end-capped amide oligomer assembled by multiple hydrogen bonds between chains. The products have good thermoreversible, mechanical and viscoelastic properties at room temperature. The mode for phase transition, chain dynamics, hydrogen-bonding thermodynamics and assembling mechanism of multiple hydrogen-bonding supramolecular polymers are proposed and discussed in this thesis. This hydrogen-bonding system has good potential in self-healing materials which we are investigating further. Achievements: [1] Yujie Chen, Wei Wu*, Tobias Himmel, Manfred H. Wagner. Synthesis andRhological Behavior of Thermoreversible Supramolecular Polymers with Multiple Hydrogen Bonds. Macromolecular Materials and Engineering, Accepted. [2] Yujie Chen, Wei Wu*, Jiawei Wang, Huang Jiang, Yongping Gao. Synthesis and Properties of Thermoreversible Crosslinking Supramolecular Polymer Containing Weak Multiple-hydrogen Bonds and Small Chemical Networks Sites from Dimer Acid, Diamine and Sulfonyl Isocyanate. Journal of Polymer Research, 2011, 18(6): 2325-2333. [3] Wei Wu *, Yujie Chen, Jiawei Wang, Mingchang Liu. Synthesis and Characterization of Multiple Hydrogen-bonding Supramolecular Network Polymer. Journal of Functional Polymer (Chinese), 2011, 24 (4): 411-415. [4] Wei Wu, Yujie Chen, Jiawei Wang. Preparation of Thermo-reversible and elastic Cross-linking Supramolecular Polymers. (Chinese Patent NO: CN 102040734 A). [5] Wei Wu, Yujie Chen, Manfred. H. Wagner. Chain Dynamics and Aggregation of Thermoreversible Crosslinking Supramolecular Polymers with Multiple Hydrogen-bonding. Materials Science and Engineering Congress 2012, Darmstadt,Germany, Sept 25-27, 2012.
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