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Extended Abstract

Composite Hydrogels Based on Poly (Methacrilyc Acid) Reinforced with Laponite Inorganic Filler †

1
National Institute for R&D in Chemistry and Petrochemistry ICECHIM—Spl. Independentei 202, 6th District, 0600021 Bucharest, Romania
2
Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, 1–7 Polizu Street, s1, 01106 Bucharest, Romania
3
Institute of Physical Chemistry “Ilie Murgulescu”, Romanian Academy, Spl. Independentei 202, 6th District, 0600021 Bucharest, Romania
*
Author to whom correspondence should be addressed.
Presented at the 15th International Symposium “Priorities of Chemistry for a Sustainable Development” PRIOCHEM, Bucharest, Romania, 30th October–1st November 2019.
Proceedings 2019, 29(1), 23; https://doi.org/10.3390/proceedings2019029023
Published: 12 October 2019
(This article belongs to the Proceedings of Priorities of Chemistry for a Sustainable Development-PRIOCHEM)
Polymeric hydrogels are soft materials that can absorb large amounts of water or biological fluids without dissolving. The three-dimensional network of a hydrogel is made up of hydrophilic polymer chains that are physically or chemically cross-linked. An important drawback of most hydrogels is their low mechanical strength, which can be improved by forming (nano)composites with clay as the filler.
The aim of this study was to synthesize composite hydrogels based on poly(methacrylic acid) and different concentrations of Laponite. These syntheses were conducted via free radical copolymerization in the presence of N,N′-methylenebisacrylamide as a crosslinking agent and ammonium persulfate as the initiator.
The obtained materials were characterized by FT-IR, X-ray diffraction, microscopy analyses (SEM, TEM), rheological measurements, and swelling studies. The rheological measurements proved that both storage and loss moduli increased with Laponite concentrations. The FTIR and XRD analyses confirmed the incorporation of the clay into the poly(methacrylic acid) hydrogel matrix and also the interactions between the inorganic filler and the polymer chain [1]. The swelling degree was influenced by the amount of Laponite incorporated into the polymer matrix. All hydrogels demonstrated porous architectures as observed by microscopy analyses.
Newly synthesized composite hydrogels based on different concentrations of Laponite were prepared and their properties were tested. Due to the fact that hydrogel properties can be modulated by Laponite concentrations, the designed materials are suitable candidates for pH sensitive controlled drug delivery.

Acknowledgments

This work was supported by a grant of the Romanian Ministery of Research and Innovation, CCCDI–UEFISCDI, project number PN-III-P1-1.2-PCCDI-2017-0428, contract 40PCCDI/2018, within PNCDI III and funded by the Operational Programme Human Capital of the Ministry of European Funds through the Financial Agreement 51668/09.07.2019, SMIS code 124705.

Reference

  1. Ianchis, R.; Ninciuleanu, C.M.; Gifu, I.C.; Alexandrescu, E.; Somoghi, R.; Gabor, A.R.; Preda, S.; Nistor, C.L.; Nitu, S.; Petcu, C.; et al. Novel Hydrogel-Advanced Modified Clay Nanocomposites as Possible Vehicles for Drug Delivery and Controlled Release. Nanomaterials 2017, 7, 443. [Google Scholar] [CrossRef] [PubMed]

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MDPI and ACS Style

Ninciuleanu, C.; Ianchis, R.; Alexandrescu, E.; Trica, B.; Preda, S.; Scomoroscenco, C.; Mihaescu, C.; Nistor, C.; Petcu, C.; Teodorescu, M. Composite Hydrogels Based on Poly (Methacrilyc Acid) Reinforced with Laponite Inorganic Filler. Proceedings 2019, 29, 23. https://doi.org/10.3390/proceedings2019029023

AMA Style

Ninciuleanu C, Ianchis R, Alexandrescu E, Trica B, Preda S, Scomoroscenco C, Mihaescu C, Nistor C, Petcu C, Teodorescu M. Composite Hydrogels Based on Poly (Methacrilyc Acid) Reinforced with Laponite Inorganic Filler. Proceedings. 2019; 29(1):23. https://doi.org/10.3390/proceedings2019029023

Chicago/Turabian Style

Ninciuleanu, Claudia, Raluca Ianchis, Elvira Alexandrescu, Bogdan Trica, Silviu Preda, Cristina Scomoroscenco, Catalin Mihaescu, Cristina Nistor, Cristian Petcu, and Mircea Teodorescu. 2019. "Composite Hydrogels Based on Poly (Methacrilyc Acid) Reinforced with Laponite Inorganic Filler" Proceedings 29, no. 1: 23. https://doi.org/10.3390/proceedings2019029023

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