Polymeric Nanohydrogels of Poly(N-Isopropylacrylamide) Combined with Others Functionalized Monomers: Synthesis and Characterization

Lissette Agüero Luztonó; Yuneivy Cepero Donates; Luis Guillermo Guerrero Ramirez; Addys González Palomo; Dionisio Zaldivar Silva; Issa Katime

doi:10.4236/jbnb.2014.51005

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Polymeric Nanohydrogels of Poly(N-Isopropylacrylamide) Combined with Others Functionalized Monomers: Synthesis and Characterization

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DOI: 10.4236/jbnb.2014.51005 3,480 Downloads 5,351 Views Citations

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Lissette Agüero Luztonó, Yuneivy Cepero Donates, Luis Guillermo Guerrero Ramirez, Addys González Palomo, Dionisio Zaldivar Silva, Issa Katime

Affiliation(s)

Departamento de Biología de Sistemas, Centro de Inmunología Molecular, Habana, Cuba.
Departamento de Química Macromolecular, Centro de Biomateriales, Universidad de La Habana, Habana, Cuba.
Grupo de Nuevos Materiales y Espectroscopia Supramolecular, Facultad de Ciencias y Tecnología, Bilbao, Espa?a.

ABSTRACT

Nanohydrogels from inverse microemulsion (w/o) polymerization, at 25°C, of N-isopropylacrylamide (NIPA) and functionalized monomers are described. The functionalized monomers were: N-(pyridine-4-ylmethyl) acrylamide (NP4MAM) and tert-butyl 2-acrylamidoethyl carbamate (2AAECM). The polymeric nanohydrogel obtained was characterized by attenuated total reflectance Fourier-transformed infrared spectroscopy (ATR-FTIR) and proton nuclear magnetic resonance spectrometry (¹HNMR), while their morphology and particle size was assessed by scanning electron microscopy (SEM) and dynamic light scattering. Their thermal properties were studied by Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA). As a preliminary measure of biocompatibility, in vitro evaluations of the nanohydrogels were carried out by cellular toxicity (colon carcinoma cells, CT-26) and hemocompatibility tests. These evaluations showed that these nanohydrogels were not toxic in the examined concentration range and exhibited preliminary blood compatibility; therefore they could be used in biomedical applications.

KEYWORDS

N-Isopropylacrylamide; Nanohydrogels; Inverse Microemulsion Polymerization; In Vitro Biocompatibility

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

L. Luztonó, Y. Donates, L. Guerrero Ramirez, A. Palomo, D. Silva and I. Katime, "Polymeric Nanohydrogels of Poly(N-Isopropylacrylamide) Combined with Others Functionalized Monomers: Synthesis and Characterization," Journal of Biomaterials and Nanobiotechnology, Vol. 5 No. 1, 2014, pp. 31-38. doi: 10.4236/jbnb.2014.51005.

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