Synthesis and Deswelling Behavior of Intelligent Thermosensitive Poly(N, N-Diethylacrylamide-Co-Itaconic Acid) Hydrogels

Nai Yan Zhang; Yue Guo Shen; Xiao Qi Li

doi:10.4028/www.scientific.net/AMR.490-495.3667

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 490-495Synthesis and Deswelling Behavior of Intelligent...

Synthesis and Deswelling Behavior of Intelligent Thermosensitive Poly(N, N-Diethylacrylamide-Co-Itaconic Acid) Hydrogels

Abstract:

Poly(N,N-diethylacrylamide) (PDEA) hydrogels possess a lower critical solution temperature (LCST) at around 31oC. When the external temperature is raised above the LCST, the hydrogels experience abrupt and drastic shrinkage. This unique property makes them very useful for biomedical applications such as on-off switches for modulated drug delivery and tissue engineering. In this study, itaconic acid (IA) was co-polymerized with N, N-diethylacrylamide (DEA) monomer to improve the LCST to the physiologic temperature about 37oC. These copolymer hydrogels were prepared by changing the initial DEA/IA molar ratio and total monomer concentration. The interior morphologies of hydrogels were characterized by scanning electron microscopy (SEM). In comparison with the PDEA hydrogel, the equilibrium swelling ratio (ESR) and LCST of the hydrogels increase with the increase of IA content in the feed. The deswelling dynamics behaviors of the different composition ratios of the P(DEA-co-IA) hydrogels on the different temperatures was investigated in detail.

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Periodical:

Advanced Materials Research (Volumes 490-495)

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3667-3671

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https://doi.org/10.4028/www.scientific.net/AMR.490-495.3667

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Online since:

March 2012

Authors:

Nai Yan Zhang, Yue Guo Shen, Xiao Qi Li

Keywords:

Deswelling Dynamics, Hydrogel, Intelligent Reversible, Thermosensitive

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