Robust Guar Gum/Cellulose Nanofibrils Multilayer Films with Good Barrier Properties

Abstract Cellulose based nanomaterials have the great potential to be applied to paper as bulk additive or coating material to improve overall final properties, especially in secondary fiber. In the present work, the effect of applying different kinds of cellulose nanofibrils (CNF) to papers obtained from recycled fibers using size press on physical, mechanical and barrier properties was investigated and compared with the sole use of starch as coating material. The coating process of CNF was carried out by the addition of size press grade starch to coating suspension. As a cellulose source, wheat straw was evaluated and CNF was obtained through oxidative and enzymatic pretreatments. Results indicate that starch/CNF suspension improves the overall paper properties. As a result of the deposition of coating suspension contains of 4 % wt. periodate-oxidized CNF onto paper surface, tensile and burst indices of papersheets increased as 52.2 % and 194.4 %. Significant decreases were observed in air permeability as 69.8 %. Compression tests also have been conducted to evaluate papersheets end-use properties. In comparison to the other pretreated CNF, due to is lower viscosity, applying periodate-oxidized CNF as size press significantly increased the mechanical properties of the papers fabricated from the recycled pulps.

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Developed Chitosan/Oregano Essential Oil Biocomposite Packaging Film Enhanced by Cellulose Nanofibril

Polymers ◽

10.3390/polym12081780 ◽

2020 ◽

Vol 12 (8) ◽

pp. 1780

Author(s):

Shunli Chen ◽

Min Wu ◽

Caixia Wang ◽

Shun Yan ◽

Peng Lu ◽

...

Keyword(s):

Tensile Strength ◽

Essential Oil ◽

Food Packaging ◽

Transmission Rate ◽

Cellulose Nanofibrils ◽

Barrier Properties ◽

Light Transmittance ◽

Rate Reduction ◽

Packaging Film ◽

Oregano Essential Oil

The use of advanced and eco-friendly materials has become a trend in the field of food packaging. Cellulose nanofibrils (CNFs) were prepared from bleached bagasse pulp board by a mechanical grinding method and were used to enhance the properties of a chitosan/oregano essential oil (OEO) biocomposite packaging film. The growth inhibition rate of the developed films with 2% (w/w) OEO against E. coli and L. monocytogenes reached 99%. With the increased levels of added CNFs, the fibrous network structure of the films became more obvious, as was determined by SEM and the formation of strong hydrogen bonds between CNFs and chitosan was observed in FTIR spectra, while the XRD pattern suggested that the strength of diffraction peaks and crystallinity of the films slightly increased. The addition of 20% CNFs contributed to an oxygen-transmission rate reduction of 5.96 cc/m2·day and water vapor transmission rate reduction of 741.49 g/m2·day. However, the increase in CNFs contents did not significantly improve the barrier properties of the film. The addition of 60% CNFs significantly improved the barrier properties of the film to light and exhibited the lowest light transmittance (28.53%) at 600 nm. Addition of CNFs to the chitosan/OEO film significantly improved tensile strength and the addition of 60% CNFs contributed to an increase of 16.80 MPa in tensile strength. The developed chitosan/oregano essential oil/CNFs biocomposite film with favorable properties and antibacterial activity can be used as a green, functional material in the food-packaging field. It has the potential to improve food quality and extend food shelf life.

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Cellulose nanofibrils versus cellulose nanocrystals: Comparison of performance in flexible multilayer films for packaging applications

Food Packaging and Shelf Life ◽

10.1016/j.fpsl.2020.100464 ◽

2020 ◽

Vol 23 ◽

pp. 100464 ◽

Cited By ~ 10

Author(s):

Lu Wang ◽

Cong Chen ◽

Jinwu Wang ◽

Douglas J. Gardner ◽

Mehdi Tajvidi

Keyword(s):

Cellulose Nanocrystals ◽

Cellulose Nanofibrils ◽

Multilayer Films

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Radiation dose dependent change in physiochemical, mechanical and barrier properties of guar gum based films

Carbohydrate Polymers ◽

10.1016/j.carbpol.2013.07.041 ◽

2013 ◽

Vol 98 (2) ◽

pp. 1610-1617 ◽

Cited By ~ 31

Author(s):

Chaturbhuj K. Saurabh ◽

Sumit Gupta ◽

Jitendra Bahadur ◽

S. Mazumder ◽

Prasad S. Variyar ◽

...

Keyword(s):

Radiation Dose ◽

Guar Gum ◽

Barrier Properties ◽

Dependent Change ◽

Dose Dependent

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Rheological behavior and particle suspension capability of guar gum: sodium tetraborate decahydrate gels containing cellulose nanofibrils

Cellulose ◽

10.1007/s10570-016-1015-x ◽

2016 ◽

Vol 23 (5) ◽

pp. 3013-3022 ◽

Cited By ~ 2

Author(s):

Chenggui Sun ◽

Yaman Boluk

Keyword(s):

Rheological Behavior ◽

Guar Gum ◽

Cellulose Nanofibrils ◽

Sodium Tetraborate ◽

Particle Suspension ◽

Tetraborate Decahydrate

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Facile fabrication of thermoplastic starch/poly (lactic acid) multilayer films with superior gas and moisture barrier properties

Polymer ◽

10.1016/j.polymer.2021.123679 ◽

2021 ◽

Vol 223 ◽

pp. 123679

Author(s):

Binh M. Trinh ◽

Christina C. Chang ◽

Tizazu H. Mekonnen

Keyword(s):

Lactic Acid ◽

Barrier Properties ◽

Thermoplastic Starch ◽

Multilayer Films ◽

Poly Lactic Acid ◽

Moisture Barrier ◽

Facile Fabrication

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High-Oxygen-Barrier Multilayer Films Based on Polyhydroxyalkanoates and Cellulose Nanocrystals

Nanomaterials ◽

10.3390/nano11061443 ◽

2021 ◽

Vol 11 (6) ◽

pp. 1443

Author(s):

Beatriz Melendez-Rodriguez ◽

Sergio Torres-Giner ◽

Inmaculada Angulo ◽

Maria Pardo-Figuerez ◽

Loïc Hilliou ◽

...

Keyword(s):

Cellulose Nanocrystals ◽

Cheese Whey ◽

Adhesive Layer ◽

Barrier Properties ◽

Multilayer Films ◽

High Oxygen ◽

Multilayer Structures ◽

Oxygen Barrier ◽

Contact Transparency

This study reports on the development and characterization of organic recyclable high-oxygen-barrier multilayer films based on different commercial polyhydroxyalkanoate (PHA) materials, including a blend with commercial poly(butylene adipate-co-terephthalate) (PBAT), which contained an inner layer of cellulose nanocrystals (CNCs) and an electrospun hot-tack adhesive layer of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) derived from cheese whey (CW). As a result, the full multilayer structures were made from bio-based and/or compostable materials. A characterization of the produced films was carried out in terms of morphological, optical, mechanical, and barrier properties with respect to water vapor, limonene, and oxygen. Results indicate that the multilayer films exhibited a good interlayer adhesion and contact transparency. The stiffness of the multilayers was generally improved upon incorporation of the CNC interlayer, whereas the enhanced elasticity of the blend was reduced to some extent in the multilayer with CNCs, but this was still much higher than for the neat PHAs. In terms of barrier properties, it was found that 1 µm of the CNC interlayer was able to reduce the oxygen permeance between 71% and 86%, while retaining the moisture and aroma barrier of the control materials.

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