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First Example of a Universal and Cost-Effective Approach: Polymers with Tunable Upper Critical Solution Temperature in Water and Electrolyte Solution

Title data

Seuring, Jan ; Agarwal, Seema:
First Example of a Universal and Cost-Effective Approach: Polymers with Tunable Upper Critical Solution Temperature in Water and Electrolyte Solution.
In: Macromolecules. Vol. 45 (8 May 2012) Issue 9 . - pp. 3910-3918.
ISSN 0024-9297
DOI: https://doi.org/10.1021/ma300355k

Official URL: Volltext

Project information

Project financing: Philipps-University of Marburg

Abstract in another language

We present a powerful universal and versatile approach for the synthesis of polymers that show a UCST in water. Up to now only a few polymers were known that show an upper critical solution temperature (UCST) in water. This study establishes general requirements to obtain polymers with a UCST in water as well as electrolyte solution. It is demonstrated that old homo- and copolymer systems like poly(methacrylamide) and poly(acrylamide-co-acrylonitrile) can exhibit a UCST in water and how polymers with a tunable UCST can be synthesized by copolymerization of acrylamide and acrylonitrile, monomers that are industrially produced on large scales. Controlled increase of the UCST by copolymerization of acryamide with varying amounts of acrylonitrile was shown, and it could be varied between 6 and 60 °C. The hysteresis between the cloud point upon cooling and heating was very small with only 1–2 °C in most cases. The cloud points in pure water were similar to the cloud points measured in phosphate buffered saline. Also, it is possible to prepare highly concentrated thermoresponsive polymer solutions without gel formation.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: REVERSIBLE GEL SYSTEMS; AQUEOUS-SOLUTIONS; BEHAVIOR; UCST; POLY(N-ISOPROPYLMETHACRYLAMIDE); POLYACRYLAMIDE
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II > Chair Macromolecular Chemistry II - Univ.-Prof. Dr. Andreas Greiner
Profile Fields > Advanced Fields > Polymer and Colloid Science
Research Institutions > Research Centres > Bayreuth Center for Colloids and Interfaces - BZKG
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: No
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 07 Apr 2015 10:48
Last Modified: 07 Apr 2015 10:48
URI: https://eref.uni-bayreuth.de/id/eprint/9791