REVERSIBLE AGGREGATION OF POLY(<I>N</I>-ISOPROPYLACRYLAMIDE-<I>co</I>-<I>N</I>-VINYLPYRROLIDONE) COPOLYMERS IN AQUEOUS SOLUTIONS
نویسندگان
چکیده
منابع مشابه
Phase behavior of poly(N-isopropylacrylamide) in binary aqueous solutions
In this work, the phase behavior of linear poly(N-isopropylacrylamide) (PNIPA) in water–solvent mixtures was investigated. Several solvents, including low molecular weight alcohols, were selected and phase separation temperatures were determined through cloud point measurements. All the studied systems exhibited the cononsolvency effect, i.e. lower PNIPA compatibility within definite ranges of ...
متن کاملThe Aggregation Behavior of Short Chain Hydrophilic Ionic Liquids in Aqueous Solutions
In this paper, aggregation behaviors of aqueous solutions of short chain hydrophilic Ionic Liquids (ILs), 1 – allyl - 3 - methylimidazolium chloride ([Amim]Cl), 1 - ethyl - 3 - methylimidazolium chloride ([Emim]Cl), 1 - butyl - 3 - methylimidazolium chloride ([Bmim]Cl), 1 - butyl - 3 - methylimidazolium tetrafluoroborate ([Bmim]BF4) were investigated using conductivity and laser ...
متن کاملSelf-Assembly of Double Hydrophilic Poly(2-ethyl-2-oxazoline)-b-poly(N-vinylpyrrolidone) Block Copolymers in Aqueous Solution
The self-assembly of a novel combination of hydrophilic blocks in water is presented, namely poly(2-ethyl-2-oxazoline)-b-poly(N-vinylpyrrolidone) (PEtOx-b-PVP). The completely water-soluble double hydrophilic block copolymer (DHBC) is formed via copper-catalyzed polymer conjugation, whereas the molecular weight of the PVP is varied in order to study the effect of block ratio on the self-assembl...
متن کاملColumnar molecular aggregation in the aqueous solutions of disodium cromoglycate.
Stack, chimneylike, and threadlike assemblies have previously been proposed for the structure of disodium cromoglycate (DSCG) aggregates in aqueous solutions. The results of the synchrotron x-ray scattering investigations reported here reveal the formation of simple columnar assemblies with π-π stacking at a separation of 3.4 Å between the DSCG molecules. Lateral separation between the assembli...
متن کاملSmall-angle neutron scattering study of shear-induced phase separation in aqueous poly(N-isopropylacrylamide) solutions
The influence of shear flow on the structure of concentrated aqueous poly(N-isopropylacrylamide) solutions near the lower critical solution temperature was investigated by means of small-angle neutron scattering. Two samples, both in the semi-dilute regime above the overlap concentration, were studied. The scattering curve of the less concentrated sample was not influenced by shear flow, althou...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Polymerica Sinica
سال: 2011
ISSN: 1000-3304
DOI: 10.3724/sp.j.1105.2011.10234