Preparation of Silk Sericin/Lignin Blend Beads for the Removal of Hexavalent Chromium Ions

Kwak, Hyo Won; Shin, Mun-Ju; Yun, Haesung; Lee, Ki Hoon

doi:10.3390/ijms17091466

Cited by 66 publications

(24 citation statements)

References 51 publications

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“…Graphene, in comparison to other carbon-based nanomaterials (for example carbon nanotubes), is characterized by a larger surface area that could facilitate interactions with the polymer matrix [128,129]. Graphene oxide (GO) is the most promising nanofiller, among the graphene-family nanomaterials, because it has a lower tendency to agglomerate than pristine graphene [130]. The biggest limitations, for the use of GO, are its intrinsic zero band-gap energy and low solubility in organic and aqueous solvents [131].…”

Section: Types Of Biopolymers and Nanofillersmentioning

confidence: 99%

The Effect of Nanofillers on the Functional Properties of Biopolymer-Based Films: A Review

2019

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Waste from non-degradable plastics is becoming an increasingly serious problem. Therefore, more and more research focuses on the development of materials with biodegradable properties. Bio-polymers are excellent raw materials for the production of such materials. Bio-based biopolymer films reinforced with nanostructures have become an interesting area of research. Nanocomposite films are a group of materials that mainly consist of bio-based natural (e.g., chitosan, starch) and synthetic (e.g., poly(lactic acid)) polymers and nanofillers (clay, organic, inorganic, or carbon nanostructures), with different properties. The interaction between environmentally friendly biopolymers and nanofillers leads to the improved functionality of nanocomposite materials. Depending on the properties of nanofillers, new or improved properties of nanocomposites can be obtained such as: barrier properties, improved mechanical strength, antimicrobial, and antioxidant properties or thermal stability. This review compiles information about biopolymers used as the matrix for the films with nanofillers as the active agents. Particular emphasis has been placed on the influence of nanofillers on functional properties of biopolymer films and their possible use within the food industry and food packaging systems. The possible applications of those nanocomposite films within other industries (medicine, drug and chemical industry, tissue engineering) is also briefly summarized.

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Section: Types Of Biopolymers and Nanofillersmentioning

confidence: 99%

The Effect of Nanofillers on the Functional Properties of Biopolymer-Based Films: A Review

2019

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“…The major component of the lower layer was fibroin. However, sericin peaks were difficult to identify since to the amide I, II, and III peaks of sericin were close to those of fibroin [30][31][32] and the amount of sericin in the hydrogel was 20 times lower than that of fibroin (4% fibroin/0.2% sericin). However, the sericin concentration in formulation III was *2 mg/ mL, considering that just *8 lg/mL can activate fibroblasts to promote collagen synthesis.…”

Section: Discussionmentioning

confidence: 97%

Fibroin and Polyvinyl Alcohol Hydrogel Wound Dressing Containing Silk Sericin Prepared Using High-Pressure Carbon Dioxide

Napavichayanun

Bonani

Yang

et al. 2019

Advances in Wound Care

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Objective: To fabricate and investigate the properties of fibroin and polyvinyl alcohol (PVA) hydrogels containing sericin prepared using high-pressure carbon dioxide (CO 2). Approach: In this study, fibroin/PVA hydrogels with and without sericin were prepared using the high-pressure CO 2 method. The physical and mechanical properties of the hydrogels were investigated using field-emission scanning electron microscopy, Fourier-transform infrared spectroscopy, thermogravimetric analysis, and differential scanning calorimetry, and the swelling, water retention, and compressive properties were assessed. Results: The hydrogels obtained from the combination of fibroin and PVA presented a compositional gradient along the hydrogel thickness and structure. The upper layer of the hydrogel consisted of a fibroin-based hydrogel blended with PVA, whereas the lower layer contained only fibroin. The mechanical properties regarding compression of the fibroin/PVA hydrogel were significantly better than those of the pure fibroin hydrogel, for hydrogels with and without sericin. Moreover, the mechanical properties of the hydrogels with sericin were significantly better than those without sericin. The water contents of all samples were >90%. Innovation: This study assessed a new combination of a wound healing agent and a biomaterial dressing. Moreover, this hydrogel production technique used a clean method without the need for a chemical crosslinking agent. Conclusion: The combination of the fibroin and PVA hydrogel and sericin prepared using the high-pressure CO 2 method led to good physical properties. This material may be a candidate for medical applications.

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“…Several other studies describe the use of lignin as a precursor material in the manufacture of nanoparticles (Li et al 2018b), lignin films (Duan et al 2018), spheres (Kwak et al 2016), microspheres (Li et al 2016), mesoporous material (Tang et al 2016), resins (Li et al 2015b) and permeable barriers (Kozyatnyk et al 2014) for the treatment of effluents containing toxic chemical agents.…”

Section: Lignin As Adsorbentmentioning

confidence: 99%

A Bibliometric Description of Lignin Applicability for the Removal of Chemical Pollutants in Effluents

Teles

Santos

Silva

et al. 2020

Water Air Soil Pollut

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Several industrial sectors produce tons of effluents daily containing a high amount of hazardous chemical pollutants that pose a major threat to the environment and human health. Current wastewater treatment methods, such as flocculation and activated carbon adsorption, have drawbacks linked to high material cost and too much energy consumption. Thus, the search for renewable, biodegradable, and efficient materials has been the object of research aimed at replacing the conventional materials used to cheapen processes and reduce environmental impacts. Lignin stands out in this context as it has low cost and high availability. Therefore, several scientific researches were developed to harness the potential of lignin, especially as adsorbent, for the removal of chemical agents from effluents. This paper presents a bibliometric review performed on the Scopus database, showing the evolution of studies related to the applicability of lignin in the removal of chemical pollutants in waters over the last five years. Data regarding annual publications, languages, journals, countries, institutions, keywords, and subjects were analyzed. The realized screening selected 130 articles that met the previously defined criteria. Results indicated a strong collaboration between countries and China's substantial contribution to the documents. The analysis also has shown that lignin is mainly used as adsorbent material, sorbent, flocculant agent, and hydrogel and presents important results and information for future researchers on this topic.

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Preparation of Silk Sericin/Lignin Blend Beads for the Removal of Hexavalent Chromium Ions

Cited by 66 publications

References 51 publications

The Effect of Nanofillers on the Functional Properties of Biopolymer-Based Films: A Review

The Effect of Nanofillers on the Functional Properties of Biopolymer-Based Films: A Review

Fibroin and Polyvinyl Alcohol Hydrogel Wound Dressing Containing Silk Sericin Prepared Using High-Pressure Carbon Dioxide

A Bibliometric Description of Lignin Applicability for the Removal of Chemical Pollutants in Effluents

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