Mechanical Properties and Phase Transition of High Clay Content Clay/Poly(N-isopropylacrylamide) Nanocomposite Hydrogel |
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| Authors: | Yang Liu Meifang Zhu Xiaoli Liu Y.M. Jiang Y. Ma Z.Y. Qin Dirk Kuckling Hans-Jurgen P. Adler |
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| Affiliation: | 1. State Key Lab for Modification of Chemical Fiber and Polymer Materials, College of Material Science and Engineering, Donghua University, 1882 West Yan-an Road, Shanghai 200051, China;2. Institute of Macromolecular Chemistry and Textile Chemistry, Dresden University of Technology, Mommsenstr. 13, D-01069 Dresden, Germany |
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| Abstract: | Summary: A series of high clay content Clay-S/PNIPAAm nanocomposite hydrogels (S-N gels) has been successfully prepared by in situ polymerization. Their mechanical properties and phase transition behavior has been systematically investigated. It was found that S-N gels show high tensile strength, high elongation at break, fast stress relaxation, high hysteresis, and poor resilience, which may be ascribed to the hydrophilicity and flexibility of PNIPAAm chains. It was also concluded that the macroscopic phase transition behavior of S-N gels depend on the ratio of Segments II (thermosensitive segments) to Segments I (non-thermosensitive segments). |
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| Keywords: | clay gels hydrogels nanocomposites |
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