Development of dual-sensitive smart polymers by grafting chitosan with poly (N-isopropylacrylamide): an overview

Abstract A great deal of research on polymers over the past two decades has been focused on the development of stimuli-responsive polymers to obtain materials able to respond to specific surroundings. In this paper, an overview is presented of the concepts, behavior and applicability of these “smart...

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Bibliographic Details
Published in:Polímeros, ciência e tecnologia ciência e tecnologia, 2015-06, Vol.25 (3), p.237-246
Main Authors: Marques, Nívia do Nascimento, Maia, Ana Maria da Silva, Balaban, Rosangela de Carvalho
Format: Article
Language:English
Subjects:
chitosan
N-isopropylacrylamide
pH-responsive
POLYMER SCIENCE
smart polymer
thermosensitive
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Summary:Abstract A great deal of research on polymers over the past two decades has been focused on the development of stimuli-responsive polymers to obtain materials able to respond to specific surroundings. In this paper, an overview is presented of the concepts, behavior and applicability of these “smart polymers”. Polymers that are temperature- or pH-sensitive are discussed in detail, including the response mechanisms and types of macromolecules, because they are easy to handle and have a wide range of applications. Finally, the combination of pH and temperature responsive properties by means of graft copolymerization of chitosan with poly ( N -isopropylacrylamide) (PNIPAM) was chosen to represent some synthetic routes and properties of dual-sensitive polymeric systems developed currently.
ISSN:0104-1428
1678-5169
0104-1428
DOI:10.1590/0104-1428.1744