Poly(acrylic acid-co-acrylamide)/Polyacrylamide pIPNs/Magnetite Composite Hydrogels: Synthesis and Characterization
Author:
Simeonov Marin1ORCID, Apostolov Anton Atanasov1, Georgieva Milena2ORCID, Tzankov Dimitar2, Vassileva Elena1ORCID
Affiliation:
1. Laboratory on Structure and Properties of Polymers, Faculty of Chemistry and Pharmacy, University of Sofia “St. Kliment Ohridski”, 1, James Bourchier blvd., 1164 Sofia, Bulgaria 2. Faculty of Physics, University of Sofia “St. Kliment Ohridski”, 5, James Bourchier blvd., 1164 Sofia, Bulgaria
Abstract
Novel composite hydrogels based on poly(acrylic acid-co-acrylamide)/polyacrylamide pseudo-interpenetrating polymer networks (pIPNs) and magnetite were prepared via in situ precipitation of Fe3+/Fe2+ ions within the hydrogel structure. The magnetite formation was confirmed by X-ray diffraction, and the size of the magnetite crystallites was shown to depend on the hydrogel composition: the crystallinity of the magnetite particles increased in line with PAAM content within the composition of the pIPNs. The Fourier transform infrared spectroscopy revealed an interaction between the hydrogel matrix, via the carboxylic groups of polyacrylic acid, and Fe ions, which strongly influenced the formation of the magnetite articles. The composites’ thermal properties, examined using differential scanning calorimetry (DSC), show an increase in the glass transition temperature of the obtained composites, which depends on the PAA/PAAM copolymer ratio in the pIPNs’ composition. Moreover, the composite hydrogels exhibit pH and ionic strength responsiveness as well as superparamagnetic properties. The study revealed the potential of pIPNs as matrices for controlled inorganic particle deposition as a viable method for the production of polymer nanocomposites.
Subject
Polymers and Plastics,Organic Chemistry,Biomaterials,Bioengineering
Reference41 articles.
1. Design and applications of interpenetrating polymer network hydrogels: A review;Dragan;Chem. Eng. J.,2014 2. Tavakoli, J., and Tang, Y. (2017). Hydrogel Based Sensors for Biomedical Applications: An Updated Review. Polymers, 9. 3. Mantha, S., Pillai, S., Khayambashi, P., Upadhyay, A., Zhang, Y., Tao, O., Pham, H.M., and Tran, S.D. (2019). Smart Hydrogels in Tissue Engineering and Regenerative Medicine. Materials, 12. 4. Macnaught, A.D., Wilkinson, A., and Union, I. (1997). Compendium of Chemical Terminology: IUPAC Recommendations, Oxford Blackwell Science. 5. Sperling, L.H. (1997). Polymeric Multicomponent Materials: An Introduction, John Wiley & Sons. [2nd ed.].
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|