화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.32, No.2, 95-102, March, 2008
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Versatic Acid/Vinyl Acetate의 비닐 에스테르를 가지는 α,ω-Diacrylate Poly(dimethylsiloxane)의 에멀션 공중합 연구
A Study on Emulsion Copolymerization of α,ω-Diacrylate Poly(dimethylsiloxane) Containing Vinyl Ester of Versatic Acid/Vinyl Acetate
HamidJavaherianNaghash†, ShadpourMallakpour1, ParivashYavariForushani, NurseliUyanik2
  • Islamic Azad University Department of Chemistry, Shahreza Branch, P.O. Box 311-86145, Shahreza, Isfahan
  • 1Isfahan University of Technology Organic Polymer Chemistry Research Laboratory, College of Chemistry, Isfahan 84156
  • 2Department of Chemistry Istanbul Technical University, 80626 Maslak, Istanbul
Hamid Javaherian Naghash†, Shadpour Mallakpour1, Parivash Yavari Forushani, and Nurseli Uyanik2
  • Department of Chemistry, Islamic Azad University, Shahreza Branch, P.O. Box 311-86145, Shahreza, Isfahan, Iran
  • 1Organic Polymer Chemistry Research Laboratory, College of Chemistry, Isfahan University of Technology, Isfahan 84156, Iran
  • 2Department of Chemistry, Istanbul Technical University, 80626 Maslak, Istanbul, Turkey
E-mail:
The α,ω-diacrylate poly(dimethylsiloxane) (DA-PDMS) containing vinyl ester of versatic acid/vinyl acetate (Veova-10/VAc) was prepared by emulsion copolymerization of (DA-PDMS), Veova-10 (with VAc), and auxiliary agents at 85 ℃ in the presence of ammonium peroxodisulfate (APS) as an initiator. Sodium dodecyl sulfate (SDS) and nonylphenol ethylene oxide-40 units (NP-40) were used as anionic and nonionic emulsifiers, respectively. The resulting copolymers were characterized by using Fourier transform infrared spectroscopy (FT-IR). Thermal properties of the copolymers were studied by using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The morphology of copolymers was also investigated by scanning electron microscopy (SEM) and then the effects of variables such as temperature, agitation speed, surfactant kinds, molecular weights, initiator, and DA-PDMS concentrations on the properties of the silicone-containing Veova-10/VAc emulsions were examined. The calculation of monomer conversion versus time histories indicates that by increasing the DA-PDMS concentration the polymerization rate and the number of polymer particles decrease, respectively.
Keywords:emulsion copolymerization;silicone containing emulsions;α,ω-diacrylate poly(dimethylsiloxane);vinyl ester of versatic acid;vinyl acetate
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