Development of ecofriendly bionanocomposite: Whey protein isolate/pullulan films with nano-SiO 2

Hassannia-Kolaee, Mahbobeh; Khodaiyan, Faramarz; Pourahmad, Rezvan; Shahabi-Ghahfarrokhi, Iman

doi:10.1016/j.ijbiomac.2016.01.032

Cited by 132 publications

(50 citation statements)

References 32 publications

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“…Results indicate efficient interfacial interaction between matrix and filler at all nanoclays used. In terms of tensile strength, measured improvements are comparable to other studies using nanoclay in whey protein based matrices [21,[24][25][26]. Furthermore, the continuous increase in tensile strength values is another evidence for a good distribution of the nanofiller at all concentrations as well as good interface adhesion.…”

Section: Mechanical Propertiessupporting

confidence: 80%

“…All nanofillers used showed significant enhancement of Young's modulus and tensile strength at high nanoparticles concentrations. The increase of material stiffness and strength by the incorporation of nanofillers into whey protein based matrices was also confirmed by several studies [7,21,[24][25][26]. Similar to the modulus, the material reinforcement and therewith higher strength levels depend on composite morphology, since better exfoliation leads to higher improvements.…”

Section: Mechanical Propertiessupporting

confidence: 55%

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Modification of Functional Properties of Whey Protein Isolate Nanocomposite Films and Coatings with Nanoclays

Müller

Jesdinszki

Schmid

2017

Journal of Nanomaterials

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Whey protein based films have received considerable attention to be used for environment friendly packaging applications. However, such biopolymers are prevented for use in commercial packaging due to their limited mechanical and barrier performance. The addition of nanofillers is a common method to overcome those drawbacks of biopolymers. Whey protein isolate (WPI) based nanocomposite cast films and coatings were produced using montmorillonite and vermiculite clay as nanofiller in different concentrations. Uniform distribution of filler within the polymeric matrix was confirmed by scanning electron microscopy. Mechanical properties such as tensile strength as well as Young's modulus were increased after increasing the filler content, while elongation at break values decreased. All samples showed weak barrier potential against water vapor. Nanoclay incorporation, however, reduced water vapor transmission rates by approximately 50%. The oxygen barrier performance was improved for all nanocomposites. Results also indicated proportionality with the filler ratio according to applied models. The highest barrier improvement factors (BIF) were greater than five for the cast films and even greater than sixteen for the coatings. Developed WPIbased composites depicted nanoenhanced material properties representing a promising alternative to fossil-based packaging films.

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Section: Mechanical Propertiessupporting

confidence: 80%

Section: Mechanical Propertiessupporting

confidence: 55%

Modification of Functional Properties of Whey Protein Isolate Nanocomposite Films and Coatings with Nanoclays

Müller

Jesdinszki

Schmid

2017

Journal of Nanomaterials

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“…The similar result was reported for the effects of SiO2 on whey protein isolate (WPI)/pullulan (PUL) films. The transparency of WPI/PUL/NS nanocomposite increased only slightly and it showed no significant difference due to the good miscibility of nanoparticles in the nanocomposite [25]. Each value is the mean of 3 replicates with the standard deviation.…”

Section: -3mentioning

confidence: 99%

Optical transparency and mechanical properties of semi-refined iota carrageenan film reinforced with SiO2 as food packaging material

Aji

Praseptiangga

Rochima

et al. 2018

AIP Conference Proceedings

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“…Previous research on whey protein isolate (WPI) nanocomposites demonstrated that the barrier and mechanical properties of these materials improved with increasing nanofiller loadings (Sothornvit et al, 2010;Zolfi et al, 2014;Azevedo et al, 2015;Hassannia-Kolaee et al, 2016a;Oymaci and Altinkaya, 2016;Zink et al, 2016). However, the addition of the nanofillers also caused considerably increased viscosities of the respective nanodispersions, which led to limitations in film processing due to insufficient mixing, foaming, and enclosed air.…”

mentioning

confidence: 99%

Improvement of Food Packaging-Related Properties of Whey Protein Isolate-Based Nanocomposite Films and Coatings by Addition of Montmorillonite Nanoplatelets

et al. 2017

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In this study, the effects of the addition of montmorillonite (MMT) nanoplatelets on whey protein isolate (WPI)-based nanocomposite films and coatings were investigated. The main objective was the development of WPI-based MMT nanocomposites with enhanced barrier and mechanical properties. WPI-based nanocomposite cast films and coatings were prepared by dispersing 0% (reference sample), 3, 6, 9% (w/w protein) MMT, or, depending on the protein concentration, also 12 and 15% (w/w protein) MMT into native WPI-based dispersions, followed by subsequent denaturation during the drying and curing process. The natural MMT nanofillers could be randomly dispersed into film-forming WPI-based nanodispersions, displaying good compatibility with the hydrophilic biopolymer matrix. As a result, by addition of 15% (w/w protein) MMT into 10% (w/w dispersion) WPI-based cast films or coatings, the oxygen permeability (OP) was reduced by 91% for glycerol-plasticized and 84% for sorbitol-plasticized coatings, water vapor transmission rate was reduced by 58% for sorbitol-plasticized cast films. Due to the addition of MMT nanofillers, the Young's modulus and tensile strength improved by 315 and 129%, respectively, whereas elongation at break declined by 77% for glycerol-plasticized cast films. In addition, comparison of plasticizer type revealed that sorbitol-plasticized cast films were generally stiffer and stronger, but less flexible compared glycerol-plasticized cast films. Viscosity measurements demonstrated good processability and suitability for up-scaled industrial processes of native WPI-based nanocomposite dispersions, even at high-nanofiller loadings. These results suggest that the addition of natural MMT nanofillers into native WPI-based matrices to form nanocomposite films and coatings holds great potential to replace well-established, fossil-based packaging materials for at least certain applications such as oxygen barriers as part of multilayer flexible packaging films.

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Development of ecofriendly bionanocomposite: Whey protein isolate/pullulan films with nano-SiO 2

Cited by 132 publications

References 32 publications

Modification of Functional Properties of Whey Protein Isolate Nanocomposite Films and Coatings with Nanoclays

Modification of Functional Properties of Whey Protein Isolate Nanocomposite Films and Coatings with Nanoclays

Optical transparency and mechanical properties of semi-refined iota carrageenan film reinforced with SiO2 as food packaging material

Improvement of Food Packaging-Related Properties of Whey Protein Isolate-Based Nanocomposite Films and Coatings by Addition of Montmorillonite Nanoplatelets

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