Influence of a long‐side‐chain‐containing reactive diluent on the structure and mechanical properties of UV‐cured films. Issue 10 (15th June 2016)

• Record Type: Journal Article
• Authors: Shen, Lu; Wang, Ying; Zhao, Qiang; Luo, Fubin; Chen, Junhua; Lu, Mangeng; Liang, Liyan; Wu, Kun; Shi, Jun
• Is Part Of: Polymer international. Volume 65:Issue 10(2016:Oct.)
• Page Start: 1150
• Page End: 1156
• Publication Date: 2016-06-15
• Subjects: reactive diluent -- UV curable -- crosslinking -- epoxy acrylate; Plastics -- Periodicals; Polymers -- Periodicals; Polymerization -- Periodicals; 547.7
• DOI: 10.1002/pi.5163
• Languages: English
• ISSNs: 0959-8103

Abstract

Abstract: The dimethacrylate reactive diluent (HEMA‐DDSA), a long‐side‐chain‐containing reactive diluent, was prepared by reacting 2‐dodecen‐1‐ylsuccinic anhydride with two equivalents of hydroxyethyl methacrylate. Its structure was characterized by IR and 1 H NMR spectroscopy. This new diluent was added into the formulation of UV‐curable epoxy acrylate networks. Results show that the formulation with the addition of HEMA‐DDSA has massively reduced viscosity and shows several attractive properties of epoxy acrylate oligomers. The mechanical resistance of the films is dramatically enhanced with the incorporation of long alkyl groups derived from HEMA‐DDSA, the plastic deformation zone expands, thus decreasing the inner stress of the polymer structure. Moreover, the cured coatings have a higher glass transition temperature as the percentage of HEMA‐DDSA is increased up to 5 wt%. Due to the excellent integrated performance of the polymeric films, HEMA‐DDSA proved to be an effective reactive diluent, which is of potential interest for applications in high performance materials. © 2016 Society of Chemical Industry Abstract : The environmental‐friendly reactive diluent (HEMA‐DDSA) can crosslink the structure, and improve integrated properties of UV‐cured epoxy acrylate networks significantly.