Synthesis, Characterization, and Properties Evaluation of Poly[(N-isopropylacrylamide)-co-ester]s

Title data

Ren, Liqun ; Agarwal, Seema:
Synthesis, Characterization, and Properties Evaluation of Poly[(N-isopropylacrylamide)-co-ester]s.
In: Macromolecular Chemistry and Physics. Vol. 208 (2007) Issue 3 . - pp. 245-253.
ISSN 1521-3935
DOI: https://doi.org/10.1002/macp.200600484

Official URL:

Abstract in another language

Copolymerization behavior of cyclic ketene acetal like 5,6-benzo-2-methylene-1,3-dioxepane (BMDO) with N-isopropylacrylamide (NIPAAm) is studied by free radical polymerization. Structural characterization is done using 1D and 2D NMR techniques. Under optimized reaction conditions, quantitative ring-opening of BMDO took place during the copolymerizations leading to the formation of poly(NIPAAm-co-ester)s. The reactivity ratios for the copolymerization of BMDO and NIPAAm were determined using Kelen–Tüdõs method and found to be rBMDO = 0.11 and rNIPAAm = 7.31. Copolymers with low mol- of BMDO were found to be soluble in water and also showed hydrolytic degradability. Different degradable copolymers could be generated with varied glass transition temperatures and lower critical solution temperatures (LCSTs).

Further data

Item Type:	Article in a journal
Refereed:	Yes
Keywords:	copolymerization; cyclic ketene acetals; degradable and water-soluble materials; 1D and 2D NMR techniques; free radical polymerization; N-isopropylacrylamide; NMR
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 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
Result of work at the UBT:	No
DDC Subjects:	500 Science > 540 Chemistry
Date Deposited:	07 Apr 2015 12:59
Last Modified:	24 Feb 2022 14:07
URI:	https://eref.uni-bayreuth.de/id/eprint/9898