Chitosan from Muga silkworms (<i>Antheraea assamensis</i>) and its influence on thermal degradation behavior of poly(lactic acid) based biocomposite films

Pal, Akhilesh Kumar; Das, Ananya; Katiyar, Vimal

doi:10.1002/app.43710

Cited by 14 publications

(2 citation statements)

References 41 publications

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“…The spongy materials can also be created by combining synthetic and natural materials [6]. Natural fillers such as chitosan [7] and cellulose [8,9] can be used to improve the properties of PLA-based foams. Chitosan is obtained from chitin in a deacetylation process.…”

Section: Introductionmentioning

confidence: 99%

Obtaining and Characterization of the PLA/Chitosan Foams with Antimicrobial Properties Achieved by the Emulsification Combined with the Dissolution of Chitosan by CO2 Saturation

Mania

Partyka²,

Pilch

et al. 2019

Molecules

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A new method of obtaining functional foam material has been proposed. The materials were created by mixing the poly lactic acid (PLA) solution in chloroform, chitosan (CS) dissolved in water saturated with CO2 and polyethylene glycol (PEG), and freeze-dried for removal of the solvents. The composite foams were characterized for their structural (SEM, FT-IR, density, porosity), thermal (DSC), functional (hardness, elasticity, swelling capacity, solubility), and biological (antimicrobial and cytotoxic) properties. Chitosan in the composites was a component for obtaining their foamed form with 7.4 to 22.7 times lower density compared to the neat PLA and high porosity also confirmed by the SEM. The foams had a hardness in the range of 70–440 kPa. The FT-IR analysis confirmed no new chemical bonds between the sponge ingredients. Other results showed low sorption capacity (2.5–7.2 g/g) and solubility of materials (less than 0.2%). The obtained foams had the lower Tg value and improved ability of crystallization compared to neat PLA. The addition of chitosan provides the bacteriostatic and bactericidal properties against Escherichia coli and Staphylococcus aureus. Biocompatibility studies have shown that the materials obtained are not cytotoxic to the L929 cell line.

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Section: Introductionmentioning

confidence: 99%

Obtaining and Characterization of the PLA/Chitosan Foams with Antimicrobial Properties Achieved by the Emulsification Combined with the Dissolution of Chitosan by CO2 Saturation

Mania

Partyka²,

Pilch

et al. 2019

Molecules

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“…The basic formula [14] of Flynn-Wall-Ozawa method (hereinafter called FWO) can be derived by adding the Doyle's temperature approximation integral into Eq. (2) to obtain Eq.…”

Section: Calculation Of Activation Energymentioning

confidence: 99%

Volatilization characteristics of high-lead slag and its influence on measurement of physicochemical properties at high temperature

Wang

Cui

Yang

et al. 2020

J min metall B Metall

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Volatilization causes measurement deviations of physicochemical properties for volatiles-containing slag at high temperature. Hence, investigating the degree of volatilization and identifying the volatilization mechanism and deviation rules are crucial to improve the accuracy of the measured properties. Here, PbO-FeOx-CaO-SiO2-ZnO slag system was selected as a research subject. The volatile characteristics and non-isothermal intrinsic kinetic models of high-temperature volatilization for lead slag were established by thermogravimetric analysis (TGA), and the volatilization mechanism and deviation in the measured properties were determined by analyzing the phase and chemical composition of the residues. In addition, experimental measurements of the melting temperature/ viscosity were compared with theoretically calculated results. The volatilization of PbO decreased the lead-containing phase, but increased the amount of precipitated spinel phase, which led to the deviation in the measured physicochemical properties of the studied slags. The volatilization kinetics for PbO in the slags followed three-dimensional diffusion. The diffusion of PbO gas from PbO-FeOx-CaO-SiO2-ZnO slag was the restrictive step of volatile reaction, and mechanism function was g(?)=1-(1-?)1?3. Moreover, during the slag properties measurement at high temperatures, a high heating rate and protective gas can be used to reduce volatilization of lead slag and avoid consequent properties deviation.

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Green Composites with Excellent Barrier Properties

Gupta

Pal

Patwa

et al. 2018

Advanced Green Composites

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Chitosan from Muga silkworms (Antheraea assamensis) and its influence on thermal degradation behavior of poly(lactic acid) based biocomposite films

Cited by 14 publications

References 41 publications

Obtaining and Characterization of the PLA/Chitosan Foams with Antimicrobial Properties Achieved by the Emulsification Combined with the Dissolution of Chitosan by CO2 Saturation

Obtaining and Characterization of the PLA/Chitosan Foams with Antimicrobial Properties Achieved by the Emulsification Combined with the Dissolution of Chitosan by CO2 Saturation

Volatilization characteristics of high-lead slag and its influence on measurement of physicochemical properties at high temperature

Green Composites with Excellent Barrier Properties

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