Fabrication and properties of keratoses/polyvinyl alcohol blend films

Rajabinejad, Hossein; Zoccola, Marina; Patrucco, Alessia; Montarsolo, Alessio; Chen, Yan; Ferri, Ada; Muresan, Augustin; Tonin, Claudio

doi:10.1007/s00289-019-02889-7

Cited by 17 publications

(13 citation statements)

References 23 publications

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“…The FTIR spectra of neat PVA, PVA-ALG, and its nanocomposite films at different CNC weight fractions of 2.5, 5 et 10% were reported in Fig 7 . Neat PVA has characteristic peaks at 3337 cm -1 , 2941 cm -1 , 1709 cm -1 , 1092 cm -1, and 850 cm -1 which represent the bending vibration of hydroxyl groups, CH2, C=O bending vibration, C-O group, and C-C group stretching vibration respectively [22,52]. All the films exhibit approximately the same peaks, with a slit shift in the range of 3600-3000 cm -1 indicating the presence of a hydrogen bond among the OH group of PVA and ALG [2,5,20]. In addition, some peak characteristics at 624 cm -1 and 1420 cm -1 correspond to the stretching vibrations of asymmetric and symmetric COO-respectively [10].…”

Section: Processing Of Bio-nanocomposites and Interfacial Interactionsmentioning

confidence: 94%

“…In recent years, an increasing interest in biodegradable or sustainable polymers and environmentally friendly materials as a whole has been generated by current concerns about environmental pollution and the decreasing availability of petroleum [1,2]. Consequently, biopolymers have caught the interest of academics due to their potential applications in a variety of industries, including food packaging, pharmaceuticals, the automobile industry, and cosmetics [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, biopolymers have caught the interest of academics due to their potential applications in a variety of industries, including food packaging, pharmaceuticals, the automobile industry, and cosmetics [3][4][5]. The mechanical, optical, processing, and thermal qualities of biopolymers need to be improved in order for them to compete with petroleum derivatives, despite the fact that they have shown some promise [2]. The most common methods for the reinforcement of the biopolymer are solution blending and nanofiller reinforcement [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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Bio-Nanocomposite Films Based on Cellulose Nanocrystals Filled Polyvinyl Alcohol/Alginate Polymer Blend

Khalili

Salim

Tlemcani

et al. 2022

JFPC

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In this work, the Juncus plant was used as an abundant and sustainable raw material for the production of cellulose nanocrystals (CNC). Herein, cellulose nanocrystals were prepared via sulfuric acid hydrolysis exhibiting a needle-like shape morphology, with an average diameter of 6.8 ± 1.8 nm and length of 457 ± 76 nm, arising to an aspect ratio of 59. Moreover, X-ray diffraction and TGA show that the CNCs exhibit high crystallinity and good thermal property respectively compared to other sources. Further investigation was conducted by preparing novel bio-nanocomposites through the incorporation of CNCs into the polyvinyl alcohol- alginate (PVA-ALG) blend matrix. Thus, giving enhanced properties compared to the pure matrix, particularly the mechanical properties due to the good interfacial adhesion, confirmed by FTIR analysis, while maintaining good transparency at low CNCs concentration, which is required for packaging application.

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Section: Processing Of Bio-nanocomposites and Interfacial Interactionsmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Bio-Nanocomposite Films Based on Cellulose Nanocrystals Filled Polyvinyl Alcohol/Alginate Polymer Blend

Khalili

Salim

Tlemcani

et al. 2022

JFPC

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“…It has been used in medical applications (such as surgical sutures) for a long time. [ 48 ] Silk is an ideal substrate and package for bioresorbable electronics due to its good flexibility, transparency, and mechanical properties (tensile strength (TS): 500–972 MPa; elongation ( E ): 10–24%). [ 49 ] In addition, the dissolution time of silk film can be tuned to range from several minutes to several years by adjusting its crystallinity.…”

Section: Methodsmentioning

confidence: 99%

Edible and Nutritive Electronics: Materials, Fabrications, Components, and Applications

Shan

et al. 2020

Adv Materials Technologies

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In comparison with the implantable electronics, ingestible electronics are less invasive but can travel close to major organs through the gastrointestinal (GI) tract, monitor a wide range of biomarkers and therapeutic targets, and serve as effective clinical tools for diagnostics and therapy. [4d,5] Today, GI conditions have become one of the most prevalent health concerns in modern society. The market was expected to nearly reach the one-billion-dollar mark. [4e] Through analyzing the conditions of the GI tract [4d] (Figure 1), many diseases can be monitored and diagnosed, e.g., refluxing gastric fluid, cancer, motility disorders, infected and abnormally dilated venous vessels, gastritis, gastric ulcers, coeliac disease, lactose intolerance, Crohn's disease, inflammatory bowel disease, diverticular disease, constipation, clostridium difficile-associated diarrhea, irritable bowel syndrome, etc. [5,6] Conventional ingestible electronics mostly consist of inorganic materials and encapsulated with rigid nondegradable polymer, such as polydimethylsiloxane, parylene/epoxy, [4a] which will lead longer devices retention in the GI tract. This is one of the most significant risk elements during the application of conventional ingestible electronics. Fully food-based edible and nutritive electronics have emerged to address these potential risks. Edible electronics are new generation ingestible electronics. Recently, there is no accurate and clear definition of edible electronics. [4g,7] The definition of "transient electronics," [3h] which focused on implantable electronics, was similar to the edible electronics concept and defined as: made of biodegradable materials and can completely or partially dissolve, resorb, or physically disappear after functioning in environmental or physiological conditions at controlled rates. By follow this spirit, the definition of edible electronics is provided here: a class of microencapsulated electronic devices that consist of edible and nutritive inorganics and organics materials, meanwhile, that can be mainly dissolved, digested and absorbed after fulfilling the diagnosis or therapy of diseases in the gastrointestinal tract. The edible and nutritive inorganics always include edible inert metals, trace elements [8] and their oxides. Nutritive organics always include biopigments, and polymers. [7,9] A more systemic and expanded materials toolbox will be very helpful to advance The emerging novel edible and nutritive electronics indicate an important advance in ingestible and implantable electronics, covering multiple disciplines such as biomedicine, electronics, and nutriology. This review focuses on the feasibility and critical technical problems of fabricating fully edible and nutritive electronics. Recently, a limited number of fully edible and nutritive electronics, operating single functions, have been applied to monitor the condition of the gastrointestinal (GI) tract and diagnose its disorders. However, fully edible, nutritive, miniaturized, and well-functioning electronics with mu...

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“…93 Pure keratin membrane has some limitations due to poor mechanical processing properties. Therefore, natural or synthetic polymers, such as chitosan, 94,95 gelatin, 96 silk fibroin, 97,98 poly (vinyl alcohol) (PVA), [99][100][101] and polyethylene oxide (PEO), 102,103 etc. can be incorporated into keratin membranes to improve the properties and develop some functional products.…”

Section: Applications Based On the Properties Of Keratin Extracted Fr...mentioning

confidence: 99%

The progress and prospect for sustainable development of waste wool resources

Sun

Zhang

et al. 2022

Textile Research Journal

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With the growth of the world population and the improvement of living standards, the demand for global textiles has been increasing rapidly. Although natural fibers are affected by the development of synthetic fibers, wool still occupies a certain share in the textile industry and is one of the most indispensable materials. However, many postindustrial and post-consumer waste wool textiles will be produced. The conventional treatment method is landfill or incineration, which is not conducive to economic, environmental, and social development. To counter this problem, many measures and methods have been adapted for the reuse of waste resources. This article provides a review on waste wool recycling and summarizes two main directions for reuse. Waste wool can be used for thermal and sound insulation materials, reinforced composite materials, or adsorbent materials to purify contaminated water which rely on fiber properties. Keratin extracted from waste wool can be applied for the production of high-value products such as functional finishing agents, organic fertilizers, regenerated protein films/fibers, or smart wearable electronic devices. Meanwhile, future development trends and the demand of waste wool recycling are also discussed. Continuous research and exploration are still needed for effective management of waste wool resources and to turn them into useful and valuable materials or products.

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Fabrication and properties of keratoses/polyvinyl alcohol blend films

Cited by 17 publications

References 23 publications

Bio-Nanocomposite Films Based on Cellulose Nanocrystals Filled Polyvinyl Alcohol/Alginate Polymer Blend

Bio-Nanocomposite Films Based on Cellulose Nanocrystals Filled Polyvinyl Alcohol/Alginate Polymer Blend

Edible and Nutritive Electronics: Materials, Fabrications, Components, and Applications

The progress and prospect for sustainable development of waste wool resources

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