Cellulose Nanocrystals: A Potential Nanofiller for Food Packaging Applications

Dhar, Prodyut; Bhardwaj, Umesh; Kumar, Amit; Katiyar, Vimal

doi:10.1021/bk-2014-1162.ch017

Cited by 29 publications

(8 citation statements)

References 129 publications

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“…However, due to its slow crystallization, even semicrystalline PLA grades have very low crystallinity after being processed by extrusion or compression molding without subsequent annealing, which might be a reason why permeability values of both grades are in the same range . Overall, considering OP and WVP, the materials could be used as flexible packaging films and trays for fruits, vegetables, salads, and bakery products since they are not prone to immediate oxidation. , For dry foods that need to be hermetically sealed, like potato chips, the plasticized PLA could be aluminized to increase the barrier especially to moisture, which would also solve the problem of ESOME plasticizer migration.…”

Section: Resultsmentioning

confidence: 99%

“…55 Overall, considering OP and WVP, the materials could be used as flexible packaging films and trays for fruits, vegetables, salads, and bakery products since they are not prone to immediate oxidation. 56,57 For dry foods that need to be hermetically sealed, like potato chips, the plasticized PLA could be aluminized to increase the barrier especially to moisture, which would also solve the problem of ESOME plasticizer migration.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Super Tough Polylactic Acid Plasticized with Epoxidized Soybean Oil Methyl Ester for Flexible Food Packaging

Żych

Perotto

Trojanowska

et al. 2021

ACS Appl. Polym. Mater.

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Polylactic acid (PLA) is a key biopolymer with potential uses in numerous sectors, since it is biocompatible and both biobased and biodegradable. However, brittleness limits its industrial applications where plastic deformation at high impact rates or high elongation is required, for instance, flexible food packaging. In order to overcome this drawback and potentially expand the PLA market, we developed flexible PLA materials plasticized with renewable and biodegradable epoxidized soybean oil methyl ester reaching elongations at break of almost 800%. The use of amorphous PLA in combination with the lubricating effect of the plasticizer allowed the more sustainable extrusion at a low temperature of 140 °C, preventing the degradation of PLA and at the same time saving energy. Moreover, plasticized films produced, upon handling, significantly less acoustic noise than pure PLA, which is of great importance for food packaging applications. Morphology, thermomechanical and barrier properties, and migration levels were evaluated as a function of plasticizer content.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Super Tough Polylactic Acid Plasticized with Epoxidized Soybean Oil Methyl Ester for Flexible Food Packaging

Żych

Perotto

Trojanowska

et al. 2021

ACS Appl. Polym. Mater.

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“…However, the DES-pretreated birch fibers showed better thermal stability with a higher initial degradation temperature at ca. 270 °C, which may be due to the removal of hemicelluloses by DESs. , For the nanofibers, the decreased DP by mechanical disintegration is likely responsible for a lower thermal stability than DES-pretreated fibers. , …”

Section: Resultsmentioning

confidence: 99%

Cellulose Nanofibrils from Nonderivatizing Urea-Based Deep Eutectic Solvent Pretreatments

Sirviö

Haapala

2017

ACS Appl. Mater. Interfaces

160

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Deep eutectic solvents (DESs) are a fairly new class of green solvents applied in various fields. This study investigates urea-based DES systems as novel pretreatments for cellulose nanofibril production. In the experiments, deep eutectic systems having urea and ammonium thiocyanate or guanidine hydrochloride as a second component were formed at 100 °C and then applied to disintegrate wood-derived cellulose fibers. The DES-pretreated fibers were nanofibrillated into three different levels of mechanical treatments with a microfluidizer, and their properties were analyzed. Moreover, nanofibril films were fabricated by solvent casting method. Both DES systems were able to loosen and swell the cellulose fiber structure as indicated by the increase in the lateral dimension of the fibers. Nonpretreated birch cellulose fibers had difficulties in mechanical nanofibrillation as clogging of the chamber occurred often. However, cellulose nanofibrils with widths ranging from 13.0 to 19.3 nm were successfully fabricated from DES-pretreated fibers with both systems. Translucent nanofibril films generated from DES-pretreated cellulose nanofibrils had good thermal stability and mechanical properties, with tensile strengths of approximately 135-189 MPa and elastic modulus of 6.4-7.7 GPa. Consequently, both urea-based DESs showed a high potential as environmentally friendly solvents in the manufacture of cellulose nanofibrils.

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“…Such nanosized fillers in polymeric matrices have been widely used for improving thermal, and mechanical properties for industrial (e.g. food packaging and article industry) and pharmaceutical applications …”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of chitosan, polyvinylpyrrolidone, and cellulose nanowhiskers nanocomposite films for wound healing drug delivery application

Hasan

Waibhaw

Tiwari

et al. 2017

J Biomedical Materials Res

115

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This study describes the preparation of composite film using chitosan (CS) and polyvinylpyrrolidone (PVP) with incorporated cellulose nanowhiskers (CNWs) for drug delivery application. CNWs were prepared by acid hydrolysis of cellulose with sulfuric acid. Field emission scanning electron microscopy studies revealed nanofibrous morphology of CNWs with 20-30 nm diameter and 200-250 nm in length. X-ray powder diffraction analysis confirmed highly crystalline nature of CNWs with 92.81% crystallinity. Incorporation of CNWs enhanced the thermal and mechanical properties of films. Fourier transform infrared spectroscopy data showed physical interactions between polymer-polymer and polymer-drug. Films prepared with CNWs showed improved swelling behavior which resulted in sustained drug release from polymeric matrix. In vitro curcumin release data were fitted with two-step release model; Step 1 as desorption from the outer surface of the film, and Step 2 as diffusion from within the film and subsequent desorption. The release kinetics confirmed biphasic release profile with different release rates along with diffusion controlled curcumin release. Prepared films showed high biocompatibility with excellent antibacterial activities. Overall, the performed studies confirmed CS-PVP-CNWs based release system can as a potential candidate for wound dressing applications with sustained drug release. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 2391-2404, 2017.

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Cellulose Nanocrystals: A Potential Nanofiller for Food Packaging Applications

Cited by 29 publications

References 129 publications

Super Tough Polylactic Acid Plasticized with Epoxidized Soybean Oil Methyl Ester for Flexible Food Packaging

Super Tough Polylactic Acid Plasticized with Epoxidized Soybean Oil Methyl Ester for Flexible Food Packaging

Cellulose Nanofibrils from Nonderivatizing Urea-Based Deep Eutectic Solvent Pretreatments

Fabrication and characterization of chitosan, polyvinylpyrrolidone, and cellulose nanowhiskers nanocomposite films for wound healing drug delivery application

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