Surface Properties of Unsaturated Polyester Resin/Siloxane-ester Copolymer Blends

불포화폴리에스테르 수지/실록산-에스테르 공중합체 블렌드의 표면특성

  • Chang, Young-Wook (Department of Chemical Engineering, Hanyang University) ;
  • Cheong, Yongjoo (Department of Chemical Engineering, Hanyang University) ;
  • Kim, Dongkook (Department of Chemistry, Hanyang University) ;
  • Jung, Jin-Soo (Small Business Training Inst., Small and Medium Industry Promotion Corporation)
  • 장영욱 (한양대학교 화학공학과) ;
  • 정용주 (한양대학교 화학공학과) ;
  • 김동국 (한양대학교 화학과) ;
  • 정진수 (중소기업진흥공단 중소기업연수원)
  • Received : 1998.07.25
  • Accepted : 1998.11.11
  • Published : 1999.02.10


In order to lower the surface energy of unsaturated polyester(UPE) resin, small amount of siloxane-ester copolymers were incorporated. The copolymers were synthesized by a condensation polymerization using ethylene glycol and hydroxy termintated polydimethylsiloxane as diols and maleic anhydride and phthalic anhydride as dibasic acids. The modified UPE resin surface was characterized by dynamic contact angle (DCA), peel strength measurements of pressure sensitive adhesives and X-ray photoelectron spectroscopy(ESCA). As the copolymer content in the blend and PDMS content in the copolymer are increased, both advancing and receding contact angles against water are increased. The strength required to peel-off the pressure sensitive adhesive tape from the modified UPE resin decreased dramatically with the addition of the copolymer. ESCA results indicated that polydimethylsiloxane segments are predominated at the outer surface of the modified UPE resin.


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