Preparation and characterization of chitosan grafted poly(lactic acid) films for biomedical composites
-
Tonmoy Debnath
,
Sirajul Hoque
Abstract
Polymer composites offer a great advantage in biomedical field over the traditional materials used like, metal, ceramics, or polymer alone. Polymer composites provide tailor-made facilities to design required physiological and mechanical properties in biomedical products. Poly(lactic acid) (PLA) is a popular aliphatic polyester used in various biomedical products because they have a renewable source and after resorption they enter well into the Krebs cycle of the human body. However, PLA suffers from hydrolysis and subsequent weight loss in aqueous environment. To improve the hydrolytic properties of hydrophobic PLA and to incorporate the biocompatibility from chitosan (CS) into it, in this study CS has been grafted onto PLA film. CS with 78% of degree of deacetylation and viscosity average molecular weight of about 8,31,760 Da was grafted onto hydrolyzed PLA film surface. Kjeldahl analysis confirmed the attachment of CS onto the PLA films. From thermal stability analysis, it was observed that percentage of weight retention at 600°C of the CS-g-PLA was around 15% higher than that of pure PLA. The mechanical properties of final CS-grafted-PLA composites showed more resistance to hydrolytic degradation than that of pure PLA film.
Acknowledgments
The authors acknowledge their affiliated institutions.
Conflict of interest statement: The authors declare they have no conflict of interest.
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©2020 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Material properties
- Interface properties of carbon fiber reinforced cyanate/epoxy resin composites at cryogenic temperature
- A new method to calculate the surface haze
- Structure and properties of particles/rubber composites applied on functionally graded lapping and polishing plate
- Adhesive properties of bio-based epoxy resin reinforced by cellulose nanocrystal additives
- Preparation and assembly
- Encapsulation of anion-cation organo-montmorillonite in terpolymer microsphere: structure, morphology, and properties
- Preparation and characterization of chitosan grafted poly(lactic acid) films for biomedical composites
- Preparation and characterization of polyvinylpyrrolidone/cobalt ferrite functionalized chitosan graphene oxide (CoFe2O4@CS@GO-PVP) nanocomposite
- Clay/(PEG-CMC) biocomposites as a novel delivery system for ibuprofen
- Engineering and processing
- Multi-objective optimization of injection-molded plastic parts using entropy weight, random forest, and genetic algorithm methods
Artikel in diesem Heft
- Frontmatter
- Material properties
- Interface properties of carbon fiber reinforced cyanate/epoxy resin composites at cryogenic temperature
- A new method to calculate the surface haze
- Structure and properties of particles/rubber composites applied on functionally graded lapping and polishing plate
- Adhesive properties of bio-based epoxy resin reinforced by cellulose nanocrystal additives
- Preparation and assembly
- Encapsulation of anion-cation organo-montmorillonite in terpolymer microsphere: structure, morphology, and properties
- Preparation and characterization of chitosan grafted poly(lactic acid) films for biomedical composites
- Preparation and characterization of polyvinylpyrrolidone/cobalt ferrite functionalized chitosan graphene oxide (CoFe2O4@CS@GO-PVP) nanocomposite
- Clay/(PEG-CMC) biocomposites as a novel delivery system for ibuprofen
- Engineering and processing
- Multi-objective optimization of injection-molded plastic parts using entropy weight, random forest, and genetic algorithm methods
