Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
권호 표지

MWD of Fractionated Polystyrene in Ultrasound Induced High Pressure Reactor

초음파가 조사된 고압반응기에서 분획된 Polystyrene의 분자량 분포특성

  • Kim, H.H. (Dept. of Chem. Eng., College of Eng., Dankook Univ.) ;
  • Lee, S.B. (Dept. of Chem. Eng., College of Eng., Dankook Univ.) ;
  • Hong, I.K. (Dept. of Chem. Eng., College of Eng., Dankook Univ.)
  • 김형진 (단국대학교 공과대학 화학공학과) ;
  • 이승범 (단국대학교 공과대학 화학공학과) ;
  • 홍인권 (단국대학교 공과대학 화학공학과)
  • Published : 1997.08.31
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Abstract

In this study, the ultrasonic irradiation in elevated pressure was used to alter the molecular weight and MWD of polystyrene. The high pressure reactor was filled with 0.5w/v% polystyrene solution, and then it was pressurized from 500psi to 4000psi. The ultrasound was irradiated in 10 minutes at each pressure, and the extract was collected and analyzed by GPC. Molecular weight distribution was predicted by log-normal and Schulz distribution function. The average molecular weight and polydispersity of polystyrene were decreased, as the pressure applied during the ultrasonic irradiation was increase. It was able to fractionate polymer material and control polydispersity by adjusting pressure in the ultrasonic irradiation.

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