Synthesis and characterization of UV-curable ladder-like polysilsesquioxane

Seung Sock Choi, Albert S. Lee, He Seung Lee, Hyeon Yeol Jeon, Kyung Youl Baek, Dong Hoon Choi, Seung Sang Hwang

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61 Citations (Scopus)

Abstract

Various ladder-like structured poly(phenyl-co-methacryl silsesquioxane)s (LPMSQ)s with high molecular weight (Mw = 10,000 ∼ 40,000) were synthesized by direct hydrolysis and polymerization in the presence of base catalyst at 25 °C. Synthesized LPMSQs mainly showed ladder-like structure and photo-cure reaction by 100 mW/cm2 (360 nm) for 10 s without any photo-cure initiators. Chemical composition and structural analysis of the obtained LPMSQs were characterized using 1H NMR, 29Si NMR, Fourier transform infrared spectroscopy (FTIR), gel permeation chromatography (GPC), and X-ray diffraction (XRD). Physical properties of LPMSQs before and after photcuring were analyzed by Nanoindentation. Surface modulus increased to 8GPa and hardness of thin films increased from 100 to 400 MPa.

Original languageEnglish
Pages (from-to)5012-5018
Number of pages7
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume49
Issue number23
DOIs
Publication statusPublished - 2011 Dec 1

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Keywords

  • UV-curable material
  • materials science
  • organic-inorganic hybrid composite
  • organic-inorganic hybrid material
  • photochemistry
  • silsesquioxane

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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