Amphiphilic Double-Brush Polymers Based on Itaconate Diesters

Chakraborty, Saheli and Ramkumar, S G and Ramakrishnan, S (2017) Amphiphilic Double-Brush Polymers Based on Itaconate Diesters. In: MACROMOLECULES, 50 (13). pp. 5004-5013.

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Abstract

Itaconic anhydride, a biosourced molecule, was readily transformed to polymerizable nonionic amphiphiles of the type R-Ita-R'; these amphiphiles carry an exo-chain double bond, which upon polymerization yielded amphiphilic double-brush polymers, especially when R and R' are immiscible, and consequently exhibit a tendency to self-segregate. DSC, WAXS, SAXS, and variable temperature FT-IR studies of these amphiphilic double-brush polymers confirm the occurrence of self-segregation followed by crystallization of the cetyl segments; in most cases a lamellar morphology is seen wherein the two immiscible segments form the alternating lamellae and the polymer backbone presumably lie along their interface. C16-Ita-HEG, which carries a hydrophobic cetyl chain and a hydrophilic heptaethylene glycol monomethyl ether unit, forms a hydrogel upon polymerization at concentrations above 2.5 wt %; an interesting feature of this hydrogel is that it exhibits a reversible thermal and shear-induced transformation to a sol, a property that could be of interest for biomedical applications.

Item Type:	Journal Article
Publication:	MACROMOLECULES
Additional Information:	Copy right for this article belongs to the AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	12 Aug 2017 04:58
Last Modified:	12 Aug 2017 04:58
URI:	http://eprints.iisc.ac.in/id/eprint/57612

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