scholarly journals Sustainable Boron Nitride Nanosheet-Reinforced Cellulose Nanofiber Composite Film with Improved Mechanical Properties and Oxygen Barrier without the Cost of Color and Brittleness

2018 ◽  
Author(s):  
Hoang-Linh Nguyen ◽  
Zahid Hanif ◽  
Seul-A. Park ◽  
Bong Gill Choi ◽  
Thang Hong Tran ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aqueous Solution ◽  
Boron Nitride ◽  
Composite Film ◽  
Food Packaging ◽  
Color Change ◽  
Cellulose Nanofiber ◽  
Oxygen Barrier ◽  
Boron Nitride Nanosheet

Herein, we introduce a boron nitride nanosheet (BNNS)-reinforced cellulose nanofiber (CNF) film as a sustainable oxygen barrier film that can potentially be applied in food packaging. Most of commodity plastics are oxygen-permeable. CNF exhibits an ideal oxygen transmittance rate (OTR) of <1 cc/m2/day in highly controlled conditions. A CNF film typically fabricated by the air drying of a CNF aqueous solution reveals an OTR of 19.08 cc/m2/day. The addition of 0-5 wt% BNNS to the CNF dispersion before drying results in a composite film with highly improved OTR, 4.7 cc/m2/day, which is sufficient for meat and cheese packaging. BNNS as a 2D nanomaterial increases the pathway of oxygen gas and reduces the chances of pin-hole formation during film fabrication involving water drying. In addition, BNNS improves the mechanical properties of the CNF films (Young’s modulus and tensile strength) without significant elongation reductions, probably due to the good miscibility of CNF and BNNS in the aqueous solution. BNNS addition also produces negligible color change, which is important for film aesthetics. An in vitro cell experiment was performed to reveal the low cytotoxicity of the CNF/BNNS composite. This composite film has great potential as a sustainable high-performance food packaging material.

scholarly journals Sustainable Boron Nitride Nanosheet-Reinforced Cellulose Nanofiber Composite Film with Oxygen Barrier without the Cost of Color and Cytotoxicity

Polymers ◽  
2018 ◽  
Vol 10 (5) ◽  
pp. 501 ◽  
Author(s):  
Hoang-Linh Nguyen ◽  
Zahid Hanif ◽  
Seul-A Park ◽  
Bong Choi ◽  
Thang Tran ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Composite Film ◽  
Cellulose Nanofiber ◽  
Oxygen Barrier ◽  
Nanofiber Composite ◽  
Boron Nitride Nanosheet ◽  
The Cost

Nano-titanium dioxide/basic magnesium hypochlorite-containing linear low-density polyethylene composite film on food packaging application

2020 ◽  
Vol 10 (6) ◽  
pp. 771-779
Author(s):  
Jing Deng ◽  
Qi Jue Chen ◽  
Ding Jie Chen ◽  
Luo Jie Zheng ◽  
Wen Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Titanium Dioxide ◽  
Composite Film ◽  
Food Packaging ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Nano Composite ◽  
Sensory Score ◽  
Nano Titanium Dioxide

The aim of this research was to probe the potential application of nano-titanium dioxide (TiO2)/basic magnesium hypochlorite (BMH)-containing linear low-density polyethylene (LLDPE) composite film in grape fresh-keeping. Mechanical properties, transparency, barrier performance and antibacterial activity of the nano-composite membrane were measured, and results showed that the antibacterial zone diameter of TiO2/BMH on pathogen-Aspergillus niger was 31.4 mm, with mixing ratio of BMH/TiO2 to 2:1. It was clearly shown that the synthesized nano-composite films decreased mechanical properties and transparency of the membrane, and also had a significant impact on sensory score, mass loss rate, decay rate, ascorbic acid (Vc) content and titratable acid content compared with LLDPE films. Moreover, the results revealed that the LLDPE antibacterial film can be effectively used for storing grapes, preserving the flavor of grapes and had an obviously effect in prolonging grapes’ shelf life.

scholarly journals Antibacterial and Antifungal Properties of Composite Polyethylene Materials Reinforced with Neem and Turmeric

2020 ◽  
Author(s):  
Thefye Sunthar ◽  
Elia Marin ◽  
Francesco Boschetto ◽  
Matteo Zanocco ◽  
Hirofumi Sunahara ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Food Packaging ◽  
Spectroscopic Characterization ◽  
Fungal Colonization ◽  
Green Technologies ◽  
Reinforcing Particles ◽  
Wide Range ◽  
High Concentrations ◽  
Antibacterial And Antifungal

With the increased scientific interest in green technologies, many researches have been focused on the production of polymeric composites containing naturally occurring reinforcing particles. Apart from increasing mechanical properties, these additions can have a wide range of interesting effects, such as increasing the resistance to bacterial and fungal colonization. In this work, different amounts of two different natural products, namely neem and turmeric, have been added to polyethylene to act as a natural antibacterial and antifungal product for food packaging applications. Microscopic and spectroscopic characterization showed that fractions up to 5% of these products can be dispersed into low-molecular weight polyethylene, while higher amounts could not be properly dispersed and resulted in an inhomogeneous, fragile composite. In vitro testing conducted with Escherichia coli, Staphylococcus aureus and Candida albicans showed a reduced proliferation of pathogens when compared to the polyethylene references. In particular, turmeric, resulted to be more effective against E. coli when compared to neem, while they had similar performances against S. aureus. Against C. albicans, only neem was able to show a good antifungal behavior, at high concentrations. Tensile testing showed that the addition of reinforcing particles reduces the mechanical properties of polyethylene, and, in the case of turmeric, it is further reduced by UV irradiation.

Microstructure, mechanical properties and in vitro biocompatibilities of a novel bionic hydroxyapatite bone scaffold prepared by the addition of boron nitride

2020 ◽  
Vol 55 (29) ◽  
pp. 14501-14515 ◽  
Author(s):  
Changbo Wang ◽  
Jinyang Feng ◽  
Jian Zhou ◽  
Xiaoguang Huang ◽  
Lin Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Boron Nitride ◽  
Bone Scaffold

scholarly journals Incorporating MXene into Boron Nitride/Poly(Vinyl Alcohol) Composite Films to Enhance Thermal and Mechanical Properties

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 379
Author(s):  
Seonmin Lee ◽  
Jooheon Kim
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Boron Nitride ◽  
Composite Film ◽  
Vinyl Alcohol ◽  
Composite Films ◽  
Poly Vinyl Alcohol ◽  
Thermal And Mechanical Properties ◽  
Conduction Path ◽  
Thermally Conductive

Aggregated boron nitride (ABN) is advantageous for increasing the packing and thermal conductivity of the matrix in composite materials, but can deteriorate the mechanical properties by breaking during processing. In addition, there are few studies on the use of Ti3C2 MXene as thermally conductive fillers. Herein, the development of a novel composite film is described. It incorporates MXene and ABN into poly(vinyl alcohol) (PVA) to achieve a high thermal conductivity. Polysilazane (PSZ)-coated ABN formed a heat conduction path in the composite film, and MXene supported it to further improve the thermal conductivity. The prepared polymer composite film is shown to provide through-plane and in-plane thermal conductivities of 1.51 and 4.28 W/mK at total filler contents of 44 wt.%. The composite film is also shown to exhibit a tensile strength of 11.96 MPa, which is much greater than that without MXene. Thus, it demonstrates that incorporating MXene as a thermally conductive filler can enhance the thermal and mechanical properties of composite films.

Highly flexible biodegradable cellulose nanofiber/graphene heat-spreader films with improved mechanical properties and enhanced thermal conductivity

2018 ◽  
Vol 6 (46) ◽  
pp. 12739-12745 ◽  
Author(s):  
Yapeng Chen ◽  
Xiao Hou ◽  
Ruiyang Kang ◽  
Yun Liang ◽  
Liangchao Guo ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Composite Film ◽  
Cellulose Nanofiber ◽  
Heat Spreader ◽  
Graphene Composite ◽  
Enhanced Thermal Conductivity

A highly flexible cellulose nanofiber/graphene composite film with metal-like thermal conductivity and outstanding strength was fabricated via simple vacuum-assisted filtration.

Functionalized boron nitride nanosheet as a membrane for removal of Pb2+ and Cd2+ ions from aqueous solution

2021 ◽  
Vol 321 ◽  
pp. 114920
Author(s):  
Jafar Azamat ◽  
Jaber Jahanbin Sardroodi ◽  
Leila Poursoltani ◽  
Darian Jahanshahi
Keyword(s):  
Aqueous Solution ◽  
Boron Nitride ◽  
Boron Nitride Nanosheet
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