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Green chitosan-carbon dots nanocomposite hydrogel film with superior properties.
Carbohydr Polym. 2015 Jan 22; 115:238-45.CP

Abstract

In this work we report novel chitosan-carbon dots nanocomposite hydrogel films. A new green source "tea" was used as precursor for carbon dots (CDs). The electrostatic interaction of positive charge on chitosan and negative charge on CDs prepared from tea was used for the successful preparation of a stable and robust chitosan-carbon dots nanocomposite hydrogel film. The hydrogel films were characterized by UV-visible spectroscopy, X-ray diffraction (XRD), Fourier transformed infra-red spectroscopy (FTIR), scanning electron microscope (SEM), fluorescent microscopy, thermogravimetric analysis (TGA) and contact angle analysis. It was observed that chitosan-carbon dots hydrogel films are soft but tough with superior UV-visible blocking, swelling, thermal and mechanical properties in comparison to chitosan hydrogel film. Moreover chitosan-carbon dots films are more water repellent (hydrophobic) as indicated by their high contact angle values. Thus, fabrication of such green soft but tough biocompatible chitosan-carbon dots nanocomposite hydrogel films offers tremendous bio-medical and industrial applications.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Konwar A
Material Nanochemistry Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Garchuk, Guwahati 781035, India.
Gogoi N
Material Nanochemistry Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Garchuk, Guwahati 781035, India.
Majumdar G
Department of Chemistry, Assam Engineering College, Jalukbari, Guwahati 781013, India.
Chowdhury D
Material Nanochemistry Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Garchuk, Guwahati 781035, India. Electronic address: devasish@iasst.gov.in.

MeSH

CarbonChitosanGreen Chemistry TechnologyMechanical PhenomenaMethylgalactosidesNanocompositesTeaTemperature

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25439891

Citation

Konwar, Achyut, et al. "Green Chitosan-carbon Dots Nanocomposite Hydrogel Film With Superior Properties." Carbohydrate Polymers, vol. 115, 2015, pp. 238-45.
Konwar A, Gogoi N, Majumdar G, et al. Green chitosan-carbon dots nanocomposite hydrogel film with superior properties. Carbohydr Polym. 2015;115:238-45.
Konwar, A., Gogoi, N., Majumdar, G., & Chowdhury, D. (2015). Green chitosan-carbon dots nanocomposite hydrogel film with superior properties. Carbohydrate Polymers, 115, 238-45. https://doi.org/10.1016/j.carbpol.2014.08.021
Konwar A, et al. Green Chitosan-carbon Dots Nanocomposite Hydrogel Film With Superior Properties. Carbohydr Polym. 2015 Jan 22;115:238-45. PubMed PMID: 25439891.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Green chitosan-carbon dots nanocomposite hydrogel film with superior properties. AU - Konwar,Achyut, AU - Gogoi,Neelam, AU - Majumdar,Gitanjali, AU - Chowdhury,Devasish, Y1 - 2014/08/23/ PY - 2014/07/07/received PY - 2014/08/13/revised PY - 2014/08/15/accepted PY - 2014/12/3/entrez PY - 2014/12/3/pubmed PY - 2015/11/3/medline KW - Carbon dots KW - Chitosan KW - Hydrogel KW - Mechanical properties KW - Nanocomposite KW - Thermal properties SP - 238 EP - 45 JF - Carbohydrate polymers JO - Carbohydr Polym VL - 115 N2 - In this work we report novel chitosan-carbon dots nanocomposite hydrogel films. A new green source "tea" was used as precursor for carbon dots (CDs). The electrostatic interaction of positive charge on chitosan and negative charge on CDs prepared from tea was used for the successful preparation of a stable and robust chitosan-carbon dots nanocomposite hydrogel film. The hydrogel films were characterized by UV-visible spectroscopy, X-ray diffraction (XRD), Fourier transformed infra-red spectroscopy (FTIR), scanning electron microscope (SEM), fluorescent microscopy, thermogravimetric analysis (TGA) and contact angle analysis. It was observed that chitosan-carbon dots hydrogel films are soft but tough with superior UV-visible blocking, swelling, thermal and mechanical properties in comparison to chitosan hydrogel film. Moreover chitosan-carbon dots films are more water repellent (hydrophobic) as indicated by their high contact angle values. Thus, fabrication of such green soft but tough biocompatible chitosan-carbon dots nanocomposite hydrogel films offers tremendous bio-medical and industrial applications. SN - 1879-1344 UR - https://www.unboundmedicine.com/medline/citation/25439891/Green_chitosan_carbon_dots_nanocomposite_hydrogel_film_with_superior_properties_ DB - PRIME DP - Unbound Medicine ER -