Study on phase behavior of binary polymer solution using ultrasonic technique

Sang Dai Lee, Kyoung Sik Moon, Hyoung Do Choi, Ho Gyu Yoon, Tak Jin Moon

Research output: Contribution to journalArticlepeer-review


Phase behaviors of PS/cyclohexane and PS/methyl acetate binary solutions were investigated by using ultrasonic technique. Ultrasonic absorption of these solutions was increased with temperature and an upward peak was observed at a specific temperature. The peak temperature was considered to be the cloud-point, which was well agreed with reference data, and the phase diagram of UCST behavior could be determined from these points. Our experimental results showed that the ultrasonic absorption behavior of the proposed sample was affected by the molecular weight of polymer, polymer concentration, and solvent. The ultrasonic velocity was linearly decreased with temperature, however, there was no correlation between the cloud-point temperature and the ultrasonic velocity.

Original languageEnglish
Pages (from-to)234-240
Number of pages7
JournalPolymer (Korea)
Issue number2
Publication statusPublished - 1997


  • Absorption
  • Binary polymer solution
  • Phase behavior
  • Ultrasonic velocity

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Polymers and Plastics
  • Materials Chemistry


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