Imaging Science and Photochemistry ›› 2019, Vol. 37 ›› Issue (5): 428-437.DOI: 10.7517/issn.1674-0475.190602

• Review and Articles • Previous Articles     Next Articles

Effect of Monomers Structures on Properties of Self-healing Photocured Materials Based on Ion Interaction

HAN Jiwei1, GONG Haoran1, YUE Dewei1, JIANG Shengling2,3, SUN Fang1   

  1. 1. College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China;
    2. Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education(Beijing University of Chemical Technology), Beijing 100029, P. R. China;
    3. College of Material Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
  • Received:2019-06-10 Online:2019-09-15 Published:2019-09-15

Abstract: In this paper, the effects of soft and hard monomer structures and their proportions on photopolymerization behaviour, and mechanical and self-healable properties of self-healing photocured materials were investigated. The results show that changing the structures and proportions of hard and soft monomers did not change the photopolymerization behaviour of the photocurable self-healing system. Increasing the content of the soft monomer and decreasing the content of the hard monomer can increase the tensile strain and healing efficiency of materials, and decrease the tensile stress. The rigid rings of the hard monomer can increase the internal friction between the polymer chains, thereby increasing the tensile stress of the materials, while the soft monomer containing flexible ether chains can reduce the van der Waals force between the chains and enhance the chain mobility, thereby improving the tensile strain and healing efficiency of the materials. Sample IB7-BA3 with butyl acrylate (BA) and isobornyl acrylate (IBOA) shows good comprehensive performance and its tensile stress, tensile strain and healing efficiency are 1.42 MPa, 295% and over 90%, respectively.

Key words: photocuring, self-healing, imidazolium ion interaction, soft and hard monomer