title: Synthesis and Characterization of a Novel Borazine-Type UV Photo-Induced Polymerization of Ceramic Precursors.
abstract: A preceramic polymer of B,B',B''-(dimethyl)ethyl-acrylate-silyloxyethyl-borazine was synthesized by three steps from a molecular single-source precursor and characterized by Fourier transform infrared (FTIR) and nuclear magnetic resonance (NMR) spectrometry. Six-member borazine rings and acrylate groups were effectively introduced into the preceramic polymer to activate UV photo-induced polymerization. Photo-Differential Scanning Calorimetry (Photo-DSC) and real-time FTIR techniques were adapted to investigate the photo-polymerization process. The results revealed that the borazine derivative exhibited dramatic activity by UV polymerization, the double-bond conversion of which reached a maximum in 40 s. Furthermore, the properties of the pyrogenetic products were studied by scanning electron microscopy (SEM) and X-ray diffraction (XRD), which proved the ceramic annealed at 1100 °C retained the amorphous phase.
authors.affiliation: Department of Applied Chemistry, School of Science, Northwestern Polytechnical University, Xi'an 710129, Shaanxi, China. 1990weidan@sina.com.
authors.forename: Dan
authors.initials: D
authors.lastname: Wei
authors.affiliation: Department of Applied Chemistry, School of Science, Northwestern Polytechnical University, Xi'an 710129, Shaanxi, China. lixin@nwpu.edu.cn.
authors.forename: Lixin
authors.initials: L
authors.lastname: Chen
authors.affiliation: Department of Applied Chemistry, School of Science, Northwestern Polytechnical University, Xi'an 710129, Shaanxi, China. tingtingxu@nwpu.edu.cn.
authors.forename: Tingting
authors.initials: T
authors.lastname: Xu
authors.affiliation: Department of Applied Chemistry, School of Science, Northwestern Polytechnical University, Xi'an 710129, Shaanxi, China. vikeyhe@sina.com.
authors.forename: Weiqi
authors.initials: W
authors.lastname: He
authors.affiliation: Department of Applied Chemistry, School of Science, Northwestern Polytechnical University, Xi'an 710129, Shaanxi, China. wangyi4712@sina.com.
authors.forename: Yi
authors.initials: Y
authors.lastname: Wang
mesh_terms: D000179:Acrylates / Q000737:chemistry; D001896:Boron Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D002516:Ceramics / Q000138:chemical synthesis* / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D058105:Polymerization / Q000187:drug effects* / Q000528:radiation effects; D011108:Polymers / Q000138:chemical synthesis* / Q000528:radiation effects; D017550:Spectroscopy, Fourier Transform Infrared; D014466:Ultraviolet Rays; D014961:X-Ray Diffraction
chemical_list: D000179:Acrylates; D001896:Boron Compounds; D011108:Polymers; C522695:borazine; C036658:acrylic acid
keywords: UV curing; X-ray methods; single-source precursor; six-membered borazine rings