Premium
Cellulose–polyacrylonitrile blends, 1: thermodynamic interaction parameters and phase diagram in dimethylacetamide–LiCl
Author(s) -
Marsano Enrico,
Tamagno Monica,
Bianchi Estella,
Terbojevich Maria,
Cosani Alessandro
Publication year - 1993
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1993.220040106
Subject(s) - polyacrylonitrile , phase diagram , materials science , dimethylacetamide , cellulose , isotropy , mesophase , polymer , ternary operation , phase (matter) , thermodynamics , polymer chemistry , chemical engineering , composite material , organic chemistry , optics , solvent , liquid crystal , chemistry , physics , optoelectronics , computer science , engineering , programming language
The phase diagram of ternary mixtures composed of cellulose, polyacrylonitrile and dimethylacetamide–7% LiCl was determined at room temperature. Homogeneous solutions were observed at low polymer concentrations. Two demixing areas were experimentally evidenced when the concentration increased: the first corresponds to an equilibrium between isotropic phases, while the second represents the coexistence of a cellulose mesophase with an isotropic phase. The diagram is discussed in terms of the interaction parameters, determined via light scattering.