Plasticity of hot air-dried mannuronate- and guluronate-rich alginate films

Ashikin, Wan Hussin Noor Shimariza; Wong, Tin Wui; Law, Chung Lim

doi:10.1016/j.carbpol.2010.02.002

Cited by 37 publications

(24 citation statements)

References 37 publications

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“…Such biopolymers include proteins, polysaccharides (carbohydrates and gums), lipids, proteins, or a mixture of these, usually derived from annually renewable natural resources. Among them, alginate has attracted great attention because of its other charming properties such as low cost, availability, and bio‐adhesive ability, especially for their unique colloidal properties to form film easily …”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of nano‐SiO₂ reinforced alginate‐based nanocomposite films (II)

Yang

Xia

2017

J of Applied Polymer Sci

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Crosslinked alginate-based nanocomposites at different SiO 2 contents were prepared successfully by blending the nano-SiO 2 solution into low concentration alginate solution (0.5 wt %), with the alginate concentration increased step by step to the resulted concentration, in this course glycerol was used as plasticizer and 5 wt % CaCl 2 as crosslinker. The combined effect of SiO 2 content (1.5-8 wt %) on the microstructural, physical, mechanical, and optical properties of the nanocomposite films were investigated. The results showed that tensile strength and elongation was improved by about 40.33% and 89%, respectively, upon increasing the SiO 2 content to 4.5 wt %. In addition, water vapor permeability and swelling degree decreased by 19% and 16% with increasing SiO 2 content up to 8 and 4.5 wt %, respectively with respect to pure crosslinked alginate film. Thermogravimetric analysis also revealed that nano-SiO 2 can improve the thermal stability of sodium alginate films produced by this method.

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of nano‐SiO₂ reinforced alginate‐based nanocomposite films (II)

Yang

Xia

2017

J of Applied Polymer Sci

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“…These biopolymers can be used as an alternative to petroleum‐based polymers in film preparation because these materials feature more degradability, nontoxicity, biocompatibility, and reproducibility compared with traditional materials . Alginate has gained considerable attention because of its other fascinating properties, such as its low price, availability, and bioadhesive ability . Alginate and alginate‐based biocomposites can be readily extracted from the cell wall of brown algae and brown seaweed, and alginate is the only polysaccharide that naturally includes carboxylic groups in every constituent residue .…”

Section: Introductionmentioning

confidence: 99%

Preparation and property investigation of crosslinked alginate/silicon dioxide nanocomposite films

Yang

Xia

Wang

et al. 2016

J of Applied Polymer Sci

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Crosslinked nanocomposite films of sodium alginate (SA) and silicon dioxide (SiO2) with different SiO2 loading values were prepared by in situ synthesis. Biocomposite films were produced by solution casting and solvent evaporation with glycerol as the plasticizer and calcium chloride as the crosslinking agent. The effects of the addition of nano silicon dioxide (nano‐SiO2) in SA on the microstructural, physical, mechanical, and optical properties of the nanocomposite films were characterized. The results show that nano‐SiO2 was dispersed homogeneously in the SA matrix; it thereby formed a strong interfacial interaction between the nano‐SiO2 particles and the matrix. The transparency of the bionanocomposite films was enhanced. Thermogravimetric analysis also revealed that nano‐SiO2 improved the thermal stability of the SA films. The incorporation of SiO2 further reduced the water vapor permeability and swelling degree and significantly increased the tensile strength and elongation, which are parameters important for packaging industries. Finally, the lower light transmission of UV light from 200 to 250 nm indicated that SA/SiO2 nanocomposite films could potentially be used to prevent lipid damage by UV light in food conservation. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43489.

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“…Alginates are hydrophilic polysaccharides derived from seaweed. Alginates possess good film‐forming properties that make them particularly useful in food applications (Nisperos‐Carriedo 1994; Cutter 2006; Ashikin and others 2010). Alginates, having negatively charged groups, can form 3‐dimensional networks when react with divalent cations such as calcium (Gennadios and others 1997; Cutter and Sumne 2002).…”

Section: Introductionmentioning

confidence: 99%

Physical Performance of Biodegradable Films Intended for Antimicrobial Food Packaging

Marcos¹,

Aymerich²,

Monfort³

et al. 2010

Journal of Food Science

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Antimicrobial films were prepared by including enterocins to alginate, polyvinyl alcohol (PVOH), and zein films. The physical performance of the films was assessed by measuring color, microstructure (SEM), water vapor permeability (WVP), and tensile properties. All studied biopolymers showed poor WVP and limited tensile properties. PVOH showed the best performance exhibiting the lowest WVP values, higher tensile properties, and flexibility among studied biopolymers. SEM of antimicrobial films showed increased presence of voids and pores as a consequence of enterocin addition. However, changes in microstructure did not disturb WVP of films. Moreover, enterocin-containing films showed slight improvement compared to control films. Addition of enterocins to PVOH films had a plasticizing effect, by reducing its tensile strength and increasing the strain at break. The presence of enterocins had an important effect on tensile properties of zein films by significantly reducing its brittleness. Addition of enterocins, thus, proved not to disturb the physical performance of studied biopolymers. Development of new antimicrobial biodegradable packaging materials may contribute to improving food safety while reducing environmental impact derived from packaging waste. Practical Application: Development of new antimicrobial biodegradable packaging materials may contribute to improving food safety while reducing environmental impact derived from packaging waste.

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Plasticity of hot air-dried mannuronate- and guluronate-rich alginate films

Cited by 37 publications

References 37 publications

Preparation and characterization of nano‐SiO₂ reinforced alginate‐based nanocomposite films (II)

Preparation and characterization of nano‐SiO₂ reinforced alginate‐based nanocomposite films (II)

Preparation and property investigation of crosslinked alginate/silicon dioxide nanocomposite films

Physical Performance of Biodegradable Films Intended for Antimicrobial Food Packaging

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Plasticity of hot air-dried mannuronate- and guluronate-rich alginate films

Cited by 37 publications

References 37 publications

Preparation and characterization of nano‐SiO2 reinforced alginate‐based nanocomposite films (II)

Preparation and characterization of nano‐SiO2 reinforced alginate‐based nanocomposite films (II)

Preparation and property investigation of crosslinked alginate/silicon dioxide nanocomposite films

Physical Performance of Biodegradable Films Intended for Antimicrobial Food Packaging

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Product

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Preparation and characterization of nano‐SiO₂ reinforced alginate‐based nanocomposite films (II)

Preparation and characterization of nano‐SiO₂ reinforced alginate‐based nanocomposite films (II)