Paper Title:
Preparation and Properties of PVA/PAAm IPN Hydrogels-Copper Nanoparticles Nanocomposites
  Abstract

Copper nanoparticles were fabricated in poly(vinyl alcohol)/polyacrylamide interpenetrating polymer networks (PVA/PAAm IPNs) by reduction of copper ions with sodium hypophosphite in aqueous solutions. The PVA/PAAm IPNs hydrogels were synthesized in terms of a simultaneous interpenetrating route in the presence of glutaraldehyde and N,N'-methylene-bis-acrylamide. The swelling and mechanical properties of the resulting PVA/PAAm/Cu nanocomposite hydrogels were investigated by a gravimetric method and compression stress-strain test. The results indicated that the copper nanoparticles were assembled in the PVA/PAAm IPN hydrogels in a spherical shape, and were well dispersed and stabilized by the polymer networks, with a size range from 10 to 20 nm. The complexation of PVA and PAAm with Cu2+ in PVA/PAAm IPNs played an important part in avoiding the aggregation of copper nanoparticles, and providing particle size and size distribution controllability and stability. The nanocomposite hydrogels exhibited slightly lower swelling, but better compression mechanical properties than that of the control PVA/PAAm IPNs. These properties can be easily tuned by changing the component ratios to meet the requirements of the specific applications such as drug controlled release or tissue engineering.

  Info
Periodical
Advanced Materials Research (Volumes 284-286)
Chapter
Other related topics
Edited by
Xiaoming Sang, Pengcheng Wang, Liqun Ai, Yungang Li and Jinglong Bu
Pages
2397-2403
DOI
10.4028/www.scientific.net/AMR.284-286.2397
Citation
Y. L. Luo, Q. S. Feng, F. Xu, "Preparation and Properties of PVA/PAAm IPN Hydrogels-Copper Nanoparticles Nanocomposites", Advanced Materials Research, Vols. 284-286, pp. 2397-2403, 2011
Online since
July 2011
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$32.00
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