High clay content nanocomposite hydrogels with surprising mechanical strength and interesting deswelling kinetics

A series of high hectorite content nanocomposite Poly ( N-isopropylacrylamide), (PNIPAAm), hydrogels have been successfully synthesized by choosing a special kind of hectorite (Laponite XLS) modified by tetrasodium pyrophosphate. It was found that these hydrogels show surprising mechanical propertie...

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Bibliographic Details
Published in:Polymer (Guilford) 2006-01, Vol.47 (1), p.1-5
Main Authors: Liu, Yang, Zhu, Meifang, Liu, Xiaoli, Zhang, Wei, Sun, Bin, Chen, Yanmo, Adler, Hans-Juergen P.
Format: Article
Language:English
Subjects:
Applied sciences
Composites
Exact sciences and technology
Forms of application and semi-finished materials
Hectorite
Hydrogels
Poly( N-isopropylacrylamide)
Polymer industry, paints, wood
Technology of polymers
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Summary:A series of high hectorite content nanocomposite Poly ( N-isopropylacrylamide), (PNIPAAm), hydrogels have been successfully synthesized by choosing a special kind of hectorite (Laponite XLS) modified by tetrasodium pyrophosphate. It was found that these hydrogels show surprising mechanical properties (i.e. tensile strength: 1 MPa, elongation at break: 1400%) and complicated deswelling behavior, which are due to the high clay content of the hydrogels and ionic dispersant contained in Laponite XLS, respectively.
ISSN:0032-3861
1873-2291
DOI:10.1016/j.polymer.2005.11.030