Fish gelatin-nanoclay films. Part I: Effect of a kind of nanoclays and glycerol concentration on mechanical and water barrier properties of nanocomposites

Staroszczyk, Hanna; Malinowska‐Pańczyk, Edyta; Gottfried, Karolina; Kołodziejska, Ilona

doi:10.1111/jfpp.13211

Cited by 12 publications

(8 citation statements)

References 25 publications

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“…). A similar tendency of bacteria inactivation was also observed in the case of gelatin composites containing these clays .…”

Section: Resultssupporting

confidence: 79%

“…Such an effect was not observed in composites with addition of the second hydrophilic clay, Nanomer PGV that increased TS by 34 and 41% at concentrations of 5 and 10% clays, respectively (Table ). As we showed earlier, it was also possible to measure TS of unplasticized gelatin‐Closite Na + composites, and this clay in concentration of 5–10% improved their mechanical strength . Furthermore, the TS of gelatin composites containing clays with some hydrophobicity of the surface was also increased, although the compatibility of biopolymer matrix and clay is necessary to form a well‐dispersed mixture and get an intercalated and better exfoliated structure of composite .…”

Section: Resultsmentioning

confidence: 67%

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Clay‐filled starch films. Part I: Effect of clay kind and glycerol concentration on functional properties of composites

et al. 2016

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The aim of this work was to improve the mechanical and water barrier properties of composite films prepared from starch and clays, plasticized with glycerol at different concentrations. The effects of hydrophilic Closite Na þ and Nanomer PGV were compared with that exerted by organically modified more hydrophobic Nanofil 2 and NanoBent ZR-1. The antimicrobial activity of composites containing hydrophobic clays was also investigated. The hydrophilic Nanomer PGV at concentrations of 5-10% increased the tensile strength (TS) of unplasticized composites, but starch-Closite Na þ composites were too brittle to measure their mechanical properties. The hydrophobic clays did not improve the mechanical properties of the unplasticized composites. In the presence of glycerol at concentrations of 20-30%, TS of composites containing hydrophilic clays and even hydrophobic NanoBent ZR-1 increased in comparison to plasticized films without clay. None of the clays improved the water barrier properties of the unplasticized composites, while in the plasticized composites all the clays decreased the water vapor permeability to an extent dependent on the kind and concentration of clay and glycerol concentration. Starch-NanoBentZR-1 composite showed very high activity against gram-positive Staphylococcus aureus and Listeria innocua. StarchNanofil 2 composites were characterized by smaller activity. Neither composite showed any antimicrobial activity, or their activity against gram-negative bacteria was low.

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“…). A similar tendency of bacteria inactivation was also observed in the case of gelatin composites containing these clays .…”

Section: Resultssupporting

confidence: 79%

Section: Resultsmentioning

confidence: 67%

Clay‐filled starch films. Part I: Effect of clay kind and glycerol concentration on functional properties of composites

et al. 2016

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“…Plasticizers could break the polymer–polymer interactions (such as hydrogen bonds and Van der Waals forces) and form secondary bonds to gelatin molecular chains, thereby increase the flexibility of the films and preventing them from cracking during packing and transportation [16,17,18]. Among possibilities of additives that can be used as plasticizer in gelatin-based films, glycerol (GE) is the most commonly used in gelatin-based films [18,19,20]. Compared with other plasticizers such as sorbitol, polyethylene glycol and diethylene glycol, GE has smaller molecular dimensions and higher hydroxyl density, so it is widely used as a plasticizer into a hydrophilic biopolymers matrix.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effect of Halloysite Nanotubes and Glycerol on the Physical Properties of Fish Gelatin Films

et al. 2018

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Fish gelatin (FG)/glycerol (GE)/halloysite (HT) composite films were prepared by casting method. The morphology of the composite films was observed by scanning electron microscopy (SEM). The effects of HT and GE addition on the mechanical properties, water resistance and optical properties of the composites were investigated. Results showed that with increasing GE content, the elongation at composite breaks increased significantly, but their tensile strength (TS) and water resistance decreased. SEM results showed that GE can partly promote HT dispersion in composites. TS and water resistance also increased with the addition of HTs. Well-dispersed HTs in the FG matrix decreased the moisture uptake and water solubility of the composites. All films showed a transparency higher than 80% across the visible light region (400–800 nm), thereby indicating that light transmittance of the resulting nanocomposites was slightly affected by GE and HTs.

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“…Among these nanofillers, nanoclays such as montmorillonite (MMT) are considered as innocuous “natural” entities and have attracted considerable attention due to their availability and low cost, as well as their significant effect on the mechanical and barrier properties. 2,16 -18…”

Section: Introductionmentioning

confidence: 99%

Production and characterization of fully biobased foamed films based on gelatin

et al. 2020

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The objective of this study was to produce and characterize gelatin foamed films using extrusion. Three “optimum” formulations containing tannic acid, nanoclays (Cloisite Na+), glycerol, water, and gelatin, as well as three “controls” without tannic acid and nanoclays were prepared by calendering. Furthermore, the three “optimum” formulations were produced by extrusion film blowing only, since no stable processing conditions could be obtained for the controls. A complete set of sample characterization was performed, including morphological, mechanical, physical, and thermal properties. The results showed that besides the processing method, the thickness was also controlled by the glycerol and water content, leading to density slightly above unity, with higher values for the optimum materials. The calendered films from the optimum formulations showed overall a higher number of cells and cell density than the controls. Higher elastic moduli and tensile strengths were obtained for the films from the optimum formulations made by either method because of the reinforcing effect of the tannic acid and nanoclays, but this led to lower strain at break. The thermal profiles were similar for all films, with higher stability for the optimum formulations. The results were also explained via chemical interactions between the components as observed by Fourier transform infrared spectroscopy. Overall, the optimum formulations not only produced better foamed films in terms of general properties but were much easier to process by both methods (calendering and blowing).

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Fish gelatin-nanoclay films. Part I: Effect of a kind of nanoclays and glycerol concentration on mechanical and water barrier properties of nanocomposites

Cited by 12 publications

References 25 publications

Clay‐filled starch films. Part I: Effect of clay kind and glycerol concentration on functional properties of composites

Clay‐filled starch films. Part I: Effect of clay kind and glycerol concentration on functional properties of composites

Synergistic Effect of Halloysite Nanotubes and Glycerol on the Physical Properties of Fish Gelatin Films

Production and characterization of fully biobased foamed films based on gelatin

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