Stability of chitosan/montmorillonite nanohybrid towards enzymatic degradation on grafting with poly(lactic acid)
Article
Depan, D., Annamalai, A. Pratheep, Singh, R. P. and Misra, R. D. K.. 2014. "Stability of chitosan/montmorillonite nanohybrid towards enzymatic degradation on grafting with poly(lactic acid)." Materials Science and Technology. 30 (5), pp. 587-592. https://doi.org/10.1179/1743284713y.0000000501
Article Title | Stability of chitosan/montmorillonite nanohybrid towards enzymatic degradation on grafting with poly(lactic acid) |
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ERA Journal ID | 200067 |
Article Category | Article |
Authors | Depan, D., Annamalai, A. Pratheep, Singh, R. P. and Misra, R. D. K. |
Journal Title | Materials Science and Technology |
Journal Citation | 30 (5), pp. 587-592 |
Number of Pages | 587-592 |
Year | 2014 |
Publisher | SAGE Publications Ltd |
Place of Publication | United Kingdom |
ISSN | 0267-0836 |
1743-2847 | |
Digital Object Identifier (DOI) | https://doi.org/10.1179/1743284713y.0000000501 |
Web Address (URL) | https://journals.sagepub.com/doi/full/10.1179/1743284713Y.0000000501 |
Abstract | Enzymatic degradation of nanohybrid based on intercalation of chitosan (CS) within the galleries of montmorillonite (MMT) clay and grafted with poly(lactic acid) (PLA) was studied using esterase enzyme in phosphate buffered solution. Chitosan was first intercalated between the galleries of natural unmodified sodium MMT clay and subsequently grafted with PLA to prepare nanohybrids of CS-g-PLA/MMT. The prepared membranes were characterised by X-ray diffraction, transmission electron microscopy and NMR spectroscopy. The specimens were then subjected to enzymatic degradation to understand the effect of copolymerisation with PLA and the effect of incorporation of MMT in the CS matrix. The presence of MMT clay provided stability towards degradation of polymer matrix because of nanoscale dispersibility, thereby acting as a barrier towards the permeation of water molecules to induce hydrolysis of PLA. Similarly, the grafting of CS with crystalline PLA stabilised the CS matrix towards degradation, rendering it suitable for tissue engineering applications. |
Keywords | chitosan; Polylactide; Nanocomposite; Montmorillonite; Degradation; Hydrolysis |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 340302. Macromolecular materials |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Louisiana at Lafayette, United States |
University of Queensland | |
Bharti Vidyapeeth University, India |
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