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Synthesis and characterization of graphene oxide/modified poly(N-isopropylacrylamide) nanocomposite

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Abstract

In this study, the graphene oxide/poly(N-isopropylacrylamide) nanocomposite modified with 2-mercaptoethanol (GO/MPNIPAM) was synthesized in three stages. N-Isopropylacrylamide polymerization was firstly performed in the presence of azobisisobutyronitrile as an initiator, which was discovered by Homer, and 2-mercaptoethanol as a modifier. Then, the graphene oxide/modified polymer nanocomposite was synthesized by the covalent interactions between carboxylic acids of the graphene oxide and hydroxyl groups of the modified polymer during the esterification reaction. The GO/MPNIPAM nanocomposite includes some percentage of the polymer that improves solubility and stability of the GO sheets in physiological applications; due to the interaction between the MPNIPAM and the modified GO polymer, a bridge-like connection is formed between the GO sheets and the process that leads to remove a large number of hydrophilic groups on the GO nanocomposite and therefore, the GO/MPNIPAM is well dissolved in organic solvents. This property is beneficial for anti-cancer drug delivery as well as π–π interactions between the nanocomposite and aromatic drugs. The nanocomposite is not a toxic material for human body at all and has high capacity for drug delivery. Structure and morphology of the nanocomposite were studied by FTIR, SEM, XRD, UV, TGA and Raman analysis. The analysis done by X-ray diffraction pattern confirmed the presence of graphene oxide in nanocomposites and improved crystalline polymer in nanocomposites.

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Authors and Affiliations

  1. Department of Chemistry, Mahabad Branch, Islamic Azad University, Mahabad, P.O. Box 443, Iran

    Ehsan Jafarnejad

  2. Department of Chemistry, Payame Noor University, Miandoab, Iran

    Sonia Ramin

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  1. Ehsan Jafarnejad
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  2. Sonia Ramin
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Correspondence to Ehsan Jafarnejad.

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Jafarnejad, E., Ramin, S. Synthesis and characterization of graphene oxide/modified poly(N-isopropylacrylamide) nanocomposite. Polym. Sci. Ser. B 58, 361–365 (2016). https://doi.org/10.1134/S1560090416030076

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  • DOI: https://doi.org/10.1134/S1560090416030076

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