najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2016-7-4-667-674najo-1330Research ArticleСтатьиPreparation of chitosan/different organomodified clay polymer nanocomposites: studies on morphological, swelling, thermal stability and anti-bacterial propertiesPreparation of chitosan/different organomodified clay polymer nanocomposites: studies on morphological, swelling, thermal stability and anti-bacterial propertiesNanjunda ReddyB. H.Nanjunda ReddyB. H.

Department of Chemistry, Amrita School of Engineering, Bengaluru, Campus

Bangalore–560035, Karnataka

Department of Chemistry, Amrita School of Engineering, Bengaluru, Campus

Bangalore–560035, Karnataka

Venkata LakshmiV.Venkata LakshmiV.

Department of Studies Dand Research in Chemistry, B.H. Road,

Tumkur–572103, Karnataka

Department of Studies Dand Research in Chemistry, B.H. Road,

Tumkur–572103, Karnataka

laxmimurthy@rediffmail.comVishnu MaheshK. R.Vishnu MaheshK. R.

Department of Chemistry

Sahvige Malleshwara Hills, Kumara Swamy Layout, Bangalore–560083, Karnataka

Department of Chemistry

Sahvige Malleshwara Hills, Kumara Swamy Layout, Bangalore–560083, Karnataka

vishnumaheshkr@gmail.comMylarappaM.MylarappaM.

Department of Studies and Research in Chemistry, B.H. Road,

Tumkur–572103, Karnataka

Department of Studies and Research in Chemistry, B.H. Road,

Tumkur–572103, Karnataka

RaghavendraN.RaghavendraN.

CMRTU

Bengaluru–560059, Karnataka

CMRTU

Bengaluru–560059, Karnataka

VenkateshT.

Department of Chemistry

Bengaluru–560074, Karnataka

Amrita Vishwa Vidyapeetham UniversityAmrita Vishwa Vidyapeetham UniversityTumkur UniversityTumkur UniversityDayananda Sagar College of EngineeringDayananda Sagar College of EngineeringRV College of EngineeringRV College of EngineeringACS College of EngineeringACS College of Engineering20162208202574667674Copyright © Nanjunda Reddy B.H., Venkata Lakshmi V., Vishnu Mahesh K.R., Mylarappa M., Raghavendra N., Venkatesh T., 20252025Nanjunda Reddy B.H., Venkata Lakshmi V., Vishnu Mahesh K.R., Mylarappa M., Raghavendra N., Venkatesh T.Nanjunda Reddy B.H., Venkata Lakshmi V., Vishnu Mahesh K.R., Mylarappa M., Raghavendra N., Venkatesh T.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/1330

In the current study, chitosan films were prepared by dispersing different commercially-modified nanoclays, such as C-Na, C-10A, C-15A, C-30B, and C-93A. The exfoliation and morphology were studied using XRD and SEM. The C-15A, C-30B and C-93A nanoclays/Cts BNCs (Bionanocomposites) showed very good uniform exfoliation compared to that of other clays. The thermal analyses were evaluated using DSC and TGA. These results also confirmed that because of exfoliation, the thermal properties were improved in the case of C-15A, C-30B and C-93A nanoclays/Cts BNCs. The swelling capacity of a chitosan/clay films were studied. Increasing the chitosan content in the film increased the swelling capacity significantly; the decreasing order of swelling capacity of Cts/Clay films is in accordance with the decrease in clay content. Greater swelling capacity is shown by films Cts, C-Na and C-10A is because of the presence of greater hydrophilic agencies in the film makeup, which assist in improving the swelling characteristics of the films. The antibacterial activities of Cts/clay were also investigated against Gram-negative and Gram-positive bacteria (E. coli and S. aureus) according to the zone of inhibition in the disc diffusion method.

In the current study, chitosan films were prepared by dispersing different commercially-modified nanoclays, such as C-Na, C-10A, C-15A, C-30B, and C-93A. The exfoliation and morphology were studied using XRD and SEM. The C-15A, C-30B and C-93A nanoclays/Cts BNCs (Bionanocomposites) showed very good uniform exfoliation compared to that of other clays. The thermal analyses were evaluated using DSC and TGA. These results also confirmed that because of exfoliation, the thermal properties were improved in the case of C-15A, C-30B and C-93A nanoclays/Cts BNCs. The swelling capacity of a chitosan/clay films were studied. Increasing the chitosan content in the film increased the swelling capacity significantly; the decreasing order of swelling capacity of Cts/Clay films is in accordance with the decrease in clay content. Greater swelling capacity is shown by films Cts, C-Na and C-10A is because of the presence of greater hydrophilic agencies in the film makeup, which assist in improving the swelling characteristics of the films. The antibacterial activities of Cts/clay were also investigated against Gram-negative and Gram-positive bacteria (E. coli and S. aureus) according to the zone of inhibition in the disc diffusion method.

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The authors declare that there are no conflicts of interest present.