Preparation and Applications of Electrospun Optically Transparent Fibrous Membrane

The optically transparent electrospun fibrous membrane has been widely used in many fields due to its simple operation, flexible design, controllable structure, high specific surface area, high porosity, and unique excellent optical properties. This paper comprehensively summarizes the preparation methods and applications of an electrospun optically transparent fibrous membrane in view of the selection of raw materials and structure modulation during preparation. We start by the factors that affect transmittance among different materials and explain the light transmission mechanism of the fibrous membrane. This paper also provides an overview of the methods to fabricate a transparent nanofibrous membrane based on the electrospinning technology including direct electrospinning, solution treatment after electrospinning, heat treatment after electrospinning, and surface modification after electrospinning. It further summarizes the differences in the processes and mechanisms between different transparent fibrous membranes prepared by different methods. Additionally, we study the utilization of transparent as-spun membranes as flexible functional materials, namely alcohol dipstick, air purification, self-cleaning materials, biomedicine, sensors, energy and optoelectronics, oil–water separation, food packaging, anti-icing coating, and anti-corrosion materials. It demonstrates the high transparency of the nanofibers’ effects on the applications as well as upgrades the product performance.

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Electrospun Functional Materials toward Food Packaging Applications: A Review

Nanomaterials ◽

10.3390/nano10010150 ◽

2020 ◽

Vol 10 (1) ◽

pp. 150 ◽

Cited By ~ 25

Author(s):

Luying Zhao ◽

Gaigai Duan ◽

Guoying Zhang ◽

Haoqi Yang ◽

Shuijian He ◽

...

Keyword(s):

High Performance ◽

Food Packaging ◽

Electrospun Fiber ◽

Electrospun Nanofibers ◽

Functional Materials ◽

Future Perspective ◽

Packaging Materials ◽

High Porosity ◽

Barrier Materials ◽

Food Packaging Materials

Electrospinning is an effective and versatile method to prepare continuous polymer nanofibers and nonwovens that exhibit excellent properties such as high molecular orientation, high porosity and large specific surface area. Benefitting from these outstanding and intriguing features, electrospun nanofibers have been employed as a promising candidate for the fabrication of food packaging materials. Actually, the electrospun nanofibers used in food packaging must possess biocompatibility and low toxicity. In addition, in order to maintain the quality of food and extend its shelf life, food packaging materials also need to have certain functionality. Herein, in this timely review, functional materials produced from electrospinning toward food packaging are highlighted. At first, various strategies for the preparation of polymer electrospun fiber are introduced, then the characteristics of different packaging films and their successful applications in food packaging are summarized, including degradable materials, superhydrophobic materials, edible materials, antibacterial materials and high barrier materials. Finally, the future perspective and key challenges of polymer electrospun nanofibers for food packaging are also discussed. Hopefully, this review would provide a fundamental insight into the development of electrospun functional materials with high performance for food packaging.

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Liquid and Solid Functional Bio-Based Coatings

Polymers ◽

10.3390/polym13213640 ◽

2021 ◽

Vol 13 (21) ◽

pp. 3640

Author(s):

Vito Gigante ◽

Luca Panariello ◽

Maria-Beatrice Coltelli ◽

Serena Danti ◽

Kudirat Abidemi Obisesan ◽

...

Keyword(s):

Food Waste ◽

Food Packaging ◽

Raw Materials ◽

Functional Materials ◽

Functional Coatings ◽

Waste Streams ◽

Coating Materials ◽

Gas Barrier ◽

Life Options ◽

Materials Used

The development of new bio-based coating materials to be applied on cellulosic and plastic based substrates, with improved performances compared to currently available products and at the same time with improved sustainable end of life options, is a challenge of our times. Enabling cellulose or bioplastics with proper functional coatings, based on biopolymer and functional materials deriving from agro-food waste streams, will improve their performance, allowing them to effectively replace fossil products in the personal care, tableware and food packaging sectors. To achieve these challenging objectives some molecules can be used in wet or solid coating formulations, e.g., cutin as a hydrophobic water- and grease-repellent coating, polysaccharides such as chitosan-chitin as an antimicrobial coating, and proteins as a gas barrier. This review collects the available knowledge on functional coatings with a focus on the raw materials used and methods of dispersion/application. It considers, in addition, the correlation with the desired final properties of the applied coatings, thus discussing their potential.

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PEMANFAATAN LIMBAH KULIT DURIAN (Durio zibethinus) DAN KULIT CEMPEDAK (Artocarpus integer) SEBAGAI EDIBLE FILM

Jurnal Riset Industri Hasil Hutan ◽

10.24111/jrihh.v6i1.1222 ◽

2014 ◽

Vol 6 (1) ◽

pp. 27 ◽

Cited By ~ 2

Author(s):

Desi Mustika Amaliyah

Keyword(s):

Tensile Strength ◽

Food Packaging ◽

Raw Materials ◽

Edible Films ◽

Edible Film ◽

Durio Zibethinus ◽

Yield Result ◽

Pre Treatment

Durian (Durio zibethinus) and cempedak (Artocarpus integer) peels waste are not used by the society. The research aim is to extract pectin from durian and cempedak peels and to formulate the pectin into edible films for food packaging. The research stages were first pre-treatment of durian and cempedak peels, pectin extraction, pectin drying, and pectin application as edible films with concentration of 0%, 5%, and 15%. Based on this research it was concluded that pectin can be extracted from durian and cempedak peels with yield result of 27.97 % and 55.58 %, respectively. Edible film obtained has similar characteristics between raw materials cempedak and durian peels. The higher concentration of cempedak peel pectin increased the thickness, but decreased the tensile strength and elongation at a concentration of 15%. While in edible films from durian peel pectin, the higher concentration of pectin decreased the thickness of edible film on pectin concentration of 15%, lowered tensile strength and raised the edible film elongation.Keywords: waste, durian, cempedak, pectin extraction, edible film

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Research and application progress of lignin-based composite membrane

Journal of Polymer Engineering ◽

10.1515/polyeng-2020-0268 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Youjing Li ◽

Fen Li ◽

Ying Yang ◽

Baocai Ge ◽

Fanzhu Meng

Keyword(s):

Environmental Pollution ◽

Raw Materials ◽

Waste Product ◽

Functional Materials ◽

Polymeric Materials ◽

Composite Membranes ◽

Organic Polymer ◽

Future Research ◽

Sustainable Resources ◽

New Perspective

Abstract In view of the serious environmental pollution, which is the greatest problem the world is facing, and the continuous consumption of raw materials, it is imminent to search for green and sustainable resources. Lignin is an organic polymer that exists widely in nature, and if it can be transformed from traditional low-value waste product with low range of applications to functional materials with high application prospects, it can be of great significance to alleviate environmental pollution and shortage of fossil resources. One of the functional applications of lignin involves its use to fabricate composite with other polymeric materials, which can then be used to prepare membrane materials. This review summarizes the recent research and application progress of combining lignin with polypropylene, polyvinyl alcohol, starch, cellulose, chitosan, and other polymeric materials to prepare composite membranes; and summarizes the future development direction of lignin-based composite membranes. We hope this review may provide a new perspective to the understanding of lignin-based composite membranes and a useful reference for future research.

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New Circular Challenges in the Development of Take-Away Food Packaging in the COVID-19 Period

Energies ◽

10.3390/en14154705 ◽

2021 ◽

Vol 14 (15) ◽

pp. 4705

Author(s):

Ewa Kochańska ◽

Rafał M. Łukasik ◽

Maciej Dzikuć

Keyword(s):

Social Transformation ◽

Food Packaging ◽

New Technologies ◽

Negative Impact ◽

Raw Materials ◽

Distribution Channels ◽

Low Carbon ◽

Industrial Transformation ◽

Specific Distribution ◽

Food Market

The COVID-19 pandemic has set new challenges for the HoReCa industry. Lockdowns have coincided with and strongly impacted the industrial transformation processes that have been taking place for a decade. Among the most important HoReCa transition processes are those related to the rapid growth of the delivery-food market and ordering meals via internet platforms. The new delivery-food market requires not only the development of specific distribution channels, but also the introduction of appropriate, very specific food packaging. Food packaging and its functionality are defined by the administrative requirements and standards applicable to materials that have contact with food and principally through the prism of the ecological disaster caused by enormous amounts of plastic waste, mainly attributed to the food packaging. To meet environmental and administrative requirements, new technologies to produce food packaging materials are emerging, ensuring product functionality, low environmental impact, biodegradability, and potential for composting of the final product. However, predominantly, the obtained product should keep the nutritional value of food and protect it against changes in color or shape. Current social transformation has a significant impact on the food packaging sector, on one hand creating a new lifestyle for society all over the world, and on the other, a growing awareness of the negative impact of humans on the environment and increasing responsibility for the planet. The COVID-19 pandemic has highlighted the need to develop a circular economy based on the paradigm of shortening distribution channels, using local raw materials, limiting the consumption of raw materials, energy, water, and above all, minimizing waste production throughout the life cycle of products, all of which are in line with the idea of low-carbon development.

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Preparation and characterization of electrospun cellulose acetate sub-micro fibrous membranes

Textile Research Journal ◽

10.1177/00405175211011772 ◽

2021 ◽

pp. 004051752110117

Author(s):

Zhenzhen Quan ◽

Yihan Wang ◽

Jiajun Wu ◽

Xiaohong Qin ◽

Jianyong Yu

Keyword(s):

Cellulose Acetate ◽

High Specific Surface Area ◽

Proper Solution ◽

High Porosity ◽

Hydrolysis Time ◽

Research Fields ◽

Average Porosity ◽

Fibrous Membranes ◽

Microfiber Membrane ◽

Solution Parameters

Electrospun sub-microfiber membrane of cellulose acetate (CA), with excellent biodegradability, high specific surface area and high porosity, has attracted wide attention in various research fields. Even so, the stable continuous electrospinning of CA sub-micro fibers is affected by the solution parameters and CA acetylation degree dramatically, which still remains challenging. In the present work, electrospun CA sub-micro fibrous membranes have been prepared from four distinct solvent systems, respectively, to explore the proper solution parameters for membrane fabrication. After hydrolysis and electrospinning, the produced CA sub-micro fibrous membranes were analyzed in terms of fiber size distribution, hydrophilicity and porosity. Current analysis has shown that the degree of substitution of CA sub-micro fibers decreases with the increase in hydrolysis time, resulting in increased diameter irregularity, decreased average porosity and increased hydrophilicity of the sub-micro fibrous membrane.

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Agricultural waste as a source of innovative and compostable composite biopolymers for food packaging: a scientific review

10.46354/i3m.2021.foodops.005 ◽

2021 ◽

Author(s):

Anna Ronzano ◽

Roberta Stefanini ◽

Giulia Borghesi ◽

Giuseppe Vignali

Keyword(s):

Food Packaging ◽

Agricultural Land ◽

Raw Materials ◽

Agricultural Waste ◽

Natural Fibers ◽

Scientific Review ◽

Food And Agriculture ◽

Food And Agriculture Organization ◽

Regional Project ◽

Materials Used

"The recovery of agriculture waste is one of the challenges of 2030 Agenda. Food and Agriculture Organization states that 30 % of the world’s agricultural land is used to produce food that is later lost or wasted, and the global carbon footprint corresponds to 7% of total greenhouse gases emissions. Alternatively, natural fibers contained in food and agricultural waste could be a valuable feedstock to reinforce composite biopolymers contributing to increase mechanical properties. In addition, the use of biopolymers matrix could contribute significantly to reduce the environmental footprint of the biobased compounds. Based on these premises, a regional project in Emilia-Romagna, aims to enhance agricultural waste to produce food packaging materials which in turn would contribute to the reduction of green raw materials used. This article reviews the state of art of composite biopolymers added with fillers extracted by food and agricultural waste, analyzing the literature published on scientific databases such as Scopus. The characteristics, advantages and drawbacks of each innovative sustainable material will be studied, trying to compare their various properties. The results of the work could guide companies in the choice of eco-sustainable packaging and lay the foundations for the development of the mentioned regional project."

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Deposition of gold nanoparticles on organo-kaolinite — Application in electrocatalysis for carbon monoxide oxidation

Canadian Journal of Chemistry ◽

10.1139/v11-028 ◽

2011 ◽

Vol 89 (7) ◽

pp. 845-853 ◽

Cited By ~ 9

Author(s):

Sadok Letaief ◽

Wendy Pell ◽

Christian Detellier

Keyword(s):

Carbon Monoxide ◽

Gold Nanoparticles ◽

Photoelectron Spectroscopy ◽

Fine Particles ◽

Raw Materials ◽

Carbon Monoxide Oxidation ◽

Functional Materials ◽

Metallic State ◽

Oxidation Reactions ◽

X Ray

The clay mineral kaolinite was used as support of gold nanoparticles for heterogeneous catalysis of oxidation reactions, particularly of carbon monoxide oxidation. The application of clay minerals in the preparation of new functional materials provides an alternative approach for the use of these abundant raw materials. To improve the physicochemical properties of kaolinite, as well as to ensure a strong immobilization of the adsorbed species, kaolinite was functionalized by grafting 2-amino-2-methyl-1,3-propanediol on the internal and external surfaces of the octahedral sheets by reaction with the aluminol groups. Gold nanoparticles were then deposited on the external surfaces of the fine particles of the functionalized kaolinite. The resulting gold kaolinite nanohybrid material was characterized by various physicochemical techniques. X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, and energy-dispersive X-ray spectrometry confirmed that gold was effectively reduced to the metallic state during adsorption onto the external surfaces of the modified kaolinite. The gold nanoparticles have a narrow size distribution: more than 88% are less than 4 nm in diameter. Gold nanoparticles deposited on kaolinite catalyze the electro-oxidation of carbon monoxide in alkaline solution at room temperature.

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Heterogeneous wettable cotton based superhydrophobic Janus biofabric engineered with PLA/functionalized-organoclay microfibers for efficient oil–water separation

Journal of Materials Chemistry A ◽

10.1039/c7ta11260b ◽

2018 ◽

Vol 6 (17) ◽

pp. 7457-7479 ◽

Cited By ~ 75

Author(s):

Prakash M. Gore ◽

Balasubramanian Kandasubramanian

Keyword(s):

Global Warming ◽

Organic Solvents ◽

Functional Materials ◽

Heavy Oils ◽

Water Separation ◽

Environment Friendly ◽

Oil Water Separation ◽

Oil Water

The recent requirement for superwettable materials for efficient absorption of heavy oils and waste organic solvents, and the concern for the global warming has led to the advancement of environment friendly functional materials.

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Prediction of physical properties of thermosetting resin by using machine learning and structural formulas of raw materials

MRS Advances ◽

10.1557/adv.2020.266 ◽

2020 ◽

Vol 5 (29-30) ◽

pp. 1567-1575

Author(s):

Kokin Nakajin ◽

Takuya Minami ◽

Masaaki Kawata ◽

Toshio Fujita ◽

Katsumi Murofushi ◽

...

Keyword(s):

Machine Learning ◽

Random Forest ◽

Physical Properties ◽

Functional Groups ◽

Raw Materials ◽

Functional Materials ◽

Industrial Applications ◽

Chemical Information ◽

Thermosetting Resins ◽

Mixing Ratios

AbstractThermosetting resins are one of the most widely used functional materials in industrial applications. Although some of the physical properties of thermosetting resins are controlled by changing the functional groups of the raw materials or adjusting their mixing ratios, it was conventionally challenging to construct machine learning (ML) models, which include both mixing ratio and chemical information such as functional groups. To overcome this problem, we propose a machine learning approach based on extended circular fingerprint (ECFP) in this study. First, we predicted the classification of raw materials by the random forest, where ECFP was used as the explanatory variable. Then, we aggregated ECFP for each classification predicted by the random forest. After that, we constructed the prediction model by using the aggregated ECFP, feature quantities of reaction intermediates, and curing conditions of resin as explanatory variables. As a result, the model was able to predict in high accuracy (R^2 = 0.8), for example, the elastic modulus of thermosetting resins. Furthermore, we also show the result of verification of prediction accuracy in first step, such as using the one-hot-encording. Therefore, we confirmed that the properties of thermosetting resins could be predicted using mixed raw materials by the proposed method.

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