Open AccessDetermination of cloud-point temperatures for different copolymers
Author(s) -
Gilsinei M. Campese,
Emille M. Rodrigues,
Elias Basile Tambourgi,
Adalberto Pessoa
Publication year - 2003
Publication title -
brazilian journal of chemical engineering/brazilian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.313
H-Index - 52
eISSN - 1678-4383
pISSN - 0104-6632
DOI - 10.1590/s0104-66322003000300013
Subject(s) - propylene oxide , ethylene oxide , copolymer , polymer , salt (chemistry) , oxide , cloud point , chemical engineering , materials science , chemistry , polymer chemistry , chromatography , organic chemistry , engineering , extraction (chemistry)
This paper describes a novel system which has a great potential for use for extractions in biotechnological processes as it uses only polymers and can be operated at moderate temperatures and salt concentrations. The polymers used in this work are ethylene oxide-propylene oxide 10:90 (w/w) (EO10PO90) and ethylene oxide-propylene oxide 20:80 (w/w) (EO20PO80). The temperature required for thermoseparation decreases with increasing PO content of the copolymer and increasing buffer concentration