Physicochemical and morphological properties of plasticized poly(vinyl alcohol)–agar biodegradable films

Madera‐Santana, Tomás J.; Freile‐Pelegrín, Yolanda; Azamar-Barrios, J.A.

doi:10.1016/j.ijbiomac.2014.05.044

Cited by 73 publications

(52 citation statements)

References 30 publications

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“…This outcome indicated the formation of strong hydrogen bonds between the agar, maltodextrin, and PVA. The similar results were demonstrated in PVA/agar film with glycerol used as a plasticizer . Besides, Huafeng et al .…”

Section: Resultsmentioning

confidence: 99%

“…In this work, we reported on the fabrication of novel biodegradable and eco‐friendly membranes based on PVA, agar, and maltodextrin, which show the great potential in selective adsorption for cationic dyes. Agar is a cellular wall polysaccharide mainly composed of repeated disaccharide unit of alternating 1,3‐linked‐ d galactose and 1,4‐linked 3,6‐anhydro‐1‐galactose . It has been considered as an excellent candidate for hydrogel formation based on improved physical properties of PVA/agar membrane.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced selective adsorption of cation organic dyes on polyvinyl alcohol/agar/maltodextrin water‐resistance biomembrane

Hoang

Nguyen

Bui

et al. 2019

J of Applied Polymer Sci

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In this study, we designed a novel hydrogel composite membrane based on the combination of polyvinyl alcohol (PVA), agar, and maltodextrin through a facile solution‐casting router. From Fourier‐transform infrared spectroscopy, contact angle, scanning electron microscopy, and swelling analyses, the formation of hydrogen bonds between surface functional groups of PVA, agar, and maltodextrin was confirmed. As a result, the PVA/agar/maltodextrin membranes exhibited a more hydrophobic nature compared with pure PVA. The thermal stability and integrity of such obtained composite membranes were also elucidated by the evaluation of thermogravimetric analysis and mechanical behavior. Besides, the composite membrane exhibited high selective adsorption for cationic dyes, namely 20.2 mg g−1 for methylene blue and 19.17 mg g−1 for crystal violet at initial dye concentration of 100 mg/L, an adsorbent dosage of 0.1 g, contact time of 180 min, and solution pH 7, while anionic dyes such as congo red and methyl orange are approximately zero. The adsorption kinetics and isotherm of the as‐prepared composite membranes were well fitted to the pseudo‐second‐order and Temkin model. The effect of factors, including contact time, solution pH, PVA content, and initial dye concentration on the adsorption capacity of the as‐prepared composite membrane was also investigated in detail. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 137, 48904.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhanced selective adsorption of cation organic dyes on polyvinyl alcohol/agar/maltodextrin water‐resistance biomembrane

Hoang

Nguyen

Bui

et al. 2019

J of Applied Polymer Sci

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“…Therefore, it accumulates in the earth for many decades, causing severe environmental problems. Because of this reason, in recent times, there is more focus on bio‐based composite films for packaging applications . Biopolymers such as polysaccharides, proteins, and lipids are used to compose sustainable packaging films.…”

Section: Introductionmentioning

confidence: 99%

“…Because of this reason, in recent times, there is more focus on bio-based composite films for packaging applications. [5][6][7] Biopolymers such as polysaccharides, proteins, and lipids are used to compose sustainable packaging films. Biopolymers are derived from various natural resources through direct extraction, chemical synthesis or fermentation by microorganisms.…”

Section: Introductionmentioning

confidence: 99%

Biocompatible agar/xanthan gum composite films: Thermal, mechanical, UV, and water barrier properties

Rukmanikrishnan

Rajasekharan

Lee

et al. 2019

Polymers for Advanced Techs

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Binary composite films were prepared from agar (A) and xanthan gum (X) with different weight percentages. The composite films were transparent, lightweight, eco‐friendly, and biodegradable. The structure and morphology of the prepared agar and AX composite films were confirmed by Fourier transform infrared spectroscopy (FT‐IR), X‐ray powder diffraction (XRD), and scanning electron microscopy (SEM) technique. The glass transition temperature (Tg) and melting temperature (Tm) of the AX composite films was slightly improved, when compared with the neat agar. Thermogravimetric analysis (TGA) analysis showed a considerable increment in the char yield and an improved thermal stability. The tensile strength was in the range of 25 to 40 MPa, and elongation at break was in the range of 28.9 to 39.4%. Though, the water vapor permeability (WVP) value reduced in the composite films the difference was not significant. From the mechanical studies, we can deduce that agar and xanthan gum are compatible and miscible with one another leading to prospects of their composite films being considered for different biomedical and packaging applications.

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“…where ΔL * , Δa * , and Δb * represent the differences of the color values for the SLN-xanthan gum films vs. the xanthan gum films under the same conditions of RH and temperature, and the chroma values in relation to a standard white tile (L = 31.12, a = 2.46, b = −3.97) (Abdollahi et al 2013a, b;Ghasemlou et al 2013;Madera-Santana et al 2014;Reddy and Rhim 2014).…”

Section: Film Colormentioning

confidence: 99%

The Evaluation of Mechanical, Thermal, Optical and Microstructural Properties of Edible Films with Solid Lipid Nanoparticles-Xanthan Gum Stored at Different Temperatures and Relative Humidities

García-Betanzos

Hernández‐Sánchez

Quintanar‐Guerrero

et al. 2016

Food Bioprocess Technol

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Solid lipid nanoparticles (SLN) were obtained using the hot homogenization method and incorporated into a xanthan gum matrix (XG) to prepare edible films. The effects of SLN content (60, 65, 70, and 75 g/L) on the mechanical, color, thermal and microstructural properties, and water vapor permeability (WVP) were studied. The SLN film-forming systems remained stable for 7 weeks. Particle size was in the range of 222-257 nm. The mechanical properties of the films improved significantly when the SLN were introduced into the polymeric network to provide greater strength and flexibility with elongation at breaking of 2-9 %, affected by temperature (4-25°C), SLN concentration (60-75 g/L), and relative humidity (60-90 %). WVP was lower when edible films based on XG were incorporated with SLN at values of 0.50-0.70 g m-2 h-1 kPa −1 . The distribution of the SLN in the XG matrix was observed under scanning electron microscopy and showed changes in the arrangement as a function of SLN concentration. This explains the positive effect on the properties of the film of SLN-XG at 60 and 65 g/L. Total color difference (ΔE) increased with SLN content at values of 3.5-14. Thermal analysis showed that higher SLN content increased the melting temperature, while the plasticizer reduced it.

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Physicochemical and morphological properties of plasticized poly(vinyl alcohol)–agar biodegradable films

Cited by 73 publications

References 30 publications

Enhanced selective adsorption of cation organic dyes on polyvinyl alcohol/agar/maltodextrin water‐resistance biomembrane

Enhanced selective adsorption of cation organic dyes on polyvinyl alcohol/agar/maltodextrin water‐resistance biomembrane

Biocompatible agar/xanthan gum composite films: Thermal, mechanical, UV, and water barrier properties

The Evaluation of Mechanical, Thermal, Optical and Microstructural Properties of Edible Films with Solid Lipid Nanoparticles-Xanthan Gum Stored at Different Temperatures and Relative Humidities

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