Thermomechanical, barrier, and morphological properties of chitosan-reinforced starch-based biodegradable composite films

Akter, Nahid; Khan, Ruhul A.; Tuhin, Mohammad O.; Haque, M. E.; Nurnabi, Mohammad; Parvin, Fahmida; Islam, Rafiqul

doi:10.1177/0892705712461512

Cited by 46 publications

(32 citation statements)

References 31 publications

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“…This made the polymer matrix less compact and favourable to the adsorption/desorption of water molecules. The WVP of the SC film obtained in this study (1.78 × 10 −11 gm −1 s −1 Pa −1 ) was in the range of the published result by Acter et al (2.84 × 10 −11 gm −1 s −1 Pa −1 ) [ 58 ]. It was previously reported that the inclusion of hydrophobic components to biopolymer films resulted in a decreased WVP due to the increased hydrophobicity of the composites [ 6 ].…”

Section: Resultssupporting

confidence: 85%

Application of Supercritical Solvent Impregnation for Production of Zeolite Modified Starch-Chitosan Polymers with Antibacterial Properties

et al. 2020

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In the present study, supercritical solvent impregnation (SSI) has been applied to incorporate thymol into bio-composite polymers as a potential active packaging material. Thymol, a natural component with a proven antimicrobial activity, was successfully impregnated into starch-chitosan (SC) and starch-chitosan-zeolite (SCZ) films using supercritical carbon dioxide (scCO2) as a solvent. Experiments were performed at 35 °C, pressures of 15.5 and 30 MPa, and an impregnation time in the range of 4–24 h. The highest impregnation yields of SC films with starch to chitosan mass ratios of 1:1 and 1:2 were 10.80% and 6.48%, respectively. The addition of natural zeolite (15–60%) significantly increased the loading capacity of films enabling thymol incorporation in a quantity of 16.7–27.3%. FTIR and SEM analyses were applied for the characterization of the films. Mechanical properties and water vapor permeability of films before and after the impregnation were tested as well. Thymol release kinetics in deionized water was followed and modeled by the Korsmeyer-Peppas and Weibull model. SCZ films with thymol loading of approximately 24% exhibited strong antibacterial activity against E. coli and methicillin-resistant Staphylococcus (S.) aureus (MRSA).

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Section: Resultssupporting

confidence: 85%

Application of Supercritical Solvent Impregnation for Production of Zeolite Modified Starch-Chitosan Polymers with Antibacterial Properties

et al. 2020

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“…However, a clear shoulder is found at 1020 cm −1 in the spectra of short and large fibers of keratin. This band has been found to be sensitive to interactions of C-O-C in chitosan starch films with hydrogen bonds [41,43]. Results are related to the thermo mechanical properties and the morphological features of the composite, as a better storage modulus is reached in the composites with short and large fibers than the composite with ground quill.…”

Section: Fourier Transform Infrared Analysismentioning

confidence: 91%

“…are attributed to C-O bond stretching [40][41][42]. These peaks are used as references in the composite films, because these bands appear at the same wavenumber than the peaks found in the chitosan-starch spectrum.…”

Section: Fourier Transform Infrared Analysismentioning

confidence: 99%

All Green Composites from Fully Renewable Biopolymers: Chitosan-Starch Reinforced with Keratin from Feathers

et al. 2014

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Abstract:The performance as reinforcement of a fibrillar protein such as feather keratin fiber over a biopolymeric matrix composed of polysaccharides was evaluated in this paper. Three different kinds of keratin reinforcement were used: short and long biofibers and rachis particles. These were added separately at 5, 10, 15 and 20 wt% to the chitosan-starch matrix and the composites were processed by a casting/solvent evaporation method. The morphological characteristics, mechanical and thermal properties of the matrix and composites were studied by scanning electron microscopy, thermogravimetric analysis, differential scanning calorimetry and dynamic mechanical analysis. The thermal results indicated that the addition of keratin enhanced the thermal stability of the composites compared to pure matrix. This was corroborated with dynamic mechanical analysis as the results revealed that the storage modulus of the composites increased with respect to the pure matrix. The morphology, evaluated by scanning electron microscopy, indicated a uniform dispersion of keratin in the chitosan-starch matrix as a result of good compatibility between these biopolymers, also corroborated by FTIR. These results demonstrate that chicken feathers can be useful to obtain novel keratin reinforcements and develop new green composites providing better properties, than the original biopolymer matrix.

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“…Moreover, when the chitosan known as a natural filler was added to biofilms, their physicochemical properties such as TS, E%, water vapor permeability, and oxygen transmission rate improved. Also, water vapor and oxygen permeability, water uptake, and hydrophobic character of the chitosan-added bioblend film were better than biofilm without chitosan due to its incorporation [46]. As different inorganic salts are used in the biobased films, their crystalline [47], thermal, water vapor barrier, and mechanical properties can be significantly affected via strong hydrogen bonds.…”

Section: Fillers Used In Pva/starch Biobased Filmsmentioning

confidence: 99%

The Effects of Novel Additives Used in PVA/Starch Biohybrid Films

Karaoğul¹,

Altuntaş²,

Salan³

et al. 2019

Fillers - Synthesis, Characterization and Industrial Application

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The main aim of this chapter is to indicate the importance of additives and modifications used for PVA/starch biohybrid films. The additives and modifications used to improve the mechanical, thermal, and morphological properties of films are plasticizers, cross-linkers, fillers, physical and chemical treatment, and natural materials as well as thermoplastic starch. Plasticizers are preferred for higher molecular dynamism because of flexibility of functional groups in PVA and starch. Their flexibility is considerably affected by carboxyl and hydroxyl groups of plasticizers. The use of cofunctional groups increases the plasticity, flexibility, and physicochemical and mechanical properties of films. Moreover, cross-linking modifications are also effective to enhance the properties of biofilms. These modifications improve the tensile strength, modulus of elasticity, water resistance, thermal resistance, swelling behavior, and antibacterial activity of films. Fillers are also used to enhance the properties of PVA/starch films. In this way, the properties such as gas barrier, mechanical stiffness, transparency and thermal stability of the filler-added films are improved. The chemical and physical modifications provide stronger hydrogen bonds in films due to increasing carboxyl groups. Thus, the physical, biological, and chemical properties of films are improved because of the changing molecular structure via esterification, etherification, hydrogen bonding, and oxidation.

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Thermomechanical, barrier, and morphological properties of chitosan-reinforced starch-based biodegradable composite films

Cited by 46 publications

References 31 publications

Application of Supercritical Solvent Impregnation for Production of Zeolite Modified Starch-Chitosan Polymers with Antibacterial Properties

Application of Supercritical Solvent Impregnation for Production of Zeolite Modified Starch-Chitosan Polymers with Antibacterial Properties

All Green Composites from Fully Renewable Biopolymers: Chitosan-Starch Reinforced with Keratin from Feathers

The Effects of Novel Additives Used in PVA/Starch Biohybrid Films

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