Physico-chemical properties of keratin-polyvinyl alcohol composite

El‐Kheir, Amira Abou; Popescu, C.; Mowafi, Salwa; Salama, Mohamed; El-Sayed, H.

doi:10.1007/s12221-015-0537-4

Cited by 27 publications

(9 citation statements)

References 14 publications

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“…Keratin has poor mechanical properties, which limit its standalone applications for tissue regeneration. Therefore, in some studies, the authors improved the processability of the keratin through its blending with synthetic polymers (Table 9) such as PVA, 202 PCL, 203 PLLA 139 and PEO. 204 Among various available processing techniques, electrospinning of the keratin is a relatively simple and efficient method for the generation of fibres with a high surface area, porosity, and proper morphology.…”

Section: Biomaterials Science Reviewmentioning

confidence: 99%

Keratin: dissolution, extraction and biomedical application

et al. 2017

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Keratinous materials such as wool, feathers and hooves are tough unique biological co-products that usually have high sulfur and protein contents. A high cystine content (7-13%) differentiates keratins from other structural proteins, such as collagen and elastin. Dissolution and extraction of keratin is a difficult process compared to other natural polymers, such as chitosan, starch, collagen, and a large-scale use of keratin depends on employing a relatively fast, cost-effective and time efficient extraction method. Keratin has some inherent ability to facilitate cell adhesion, proliferation, and regeneration of the tissue, therefore keratin biomaterials can provide a biocompatible matrix for regrowth and regeneration of the defective tissue. Additionally, due to its amino acid constituents, keratin can be tailored and finely tuned to meet the exact requirement of degradation, drug release or incorporation of different hydrophobic or hydrophilic tails. This review discusses the various methods available for the dissolution and extraction of keratin with emphasis on their advantages and limitations. The impacts of various methods and chemicals used on the structure and the properties of keratin are discussed with the aim of highlighting options available toward commercial keratin production. This review also reports the properties of various keratin-based biomaterials and critically examines how these materials are influenced by the keratin extraction procedure, discussing the features that make them effective as biomedical applications, as well as some of the mechanisms of action and physiological roles of keratin. Particular attention is given to the practical application of keratin biomaterials, namely addressing the advantages and limitations on the use of keratin films, 3D composite scaffolds and keratin hydrogels for tissue engineering, wound healing, hemostatic and controlled drug release.

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Section: Biomaterials Science Reviewmentioning

confidence: 99%

Keratin: dissolution, extraction and biomedical application

et al. 2017

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“…8 (2021) polymers to obtain electro-spun polymeric materials with certain rheological properties [49]. To obtain electro-spinnable material with appropriate viscosity and rheological properties, keratin is usually blended with polymers such as polyvinyl alcohol, polyethylene oxide, polyamide, or poly acrylonitrile [77][78][79][80][81][82]. It has been reported that electro-spinning of nano-fibres from aqueous medium has the advantage of being green and up-scalable.…”

Section: Electro-spun Keratin Nano-fibresmentioning

confidence: 99%

Potential Applications of Textile Wastes and By-products in Preparation of Textile Auxiliaries

El-Sayed¹,

Taleb

Mowafi

2021

Egypt. J. Chem.

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Ever since the Stone Age, humans have preferred natural products and materials for better health and comfortability. Wool and natural silk have been used in the textile clothing thousands of years ago. The performance and appearance attributes of wool and silk make them superior for many applications. On the other hand, the textile industries are technically, economically, socially, and environmentally related to some of the sustainable development goals (SDGs) of the United Nations Agenda 2030. For instance, the item number 12 in the SDGs aims to ensure sustainable consumption and production pattern. This necessitates proper utilization of all natural products as well as recycling and utilization of any waste thereof.This article review deals with retrieval of wastes or by-products during wet processing of proteinic fibres; namely wool and silk. Different ways of proper utilization of the retrieved materials will be proposed. Specifically, this review article will focus mainly on three main by-products; namely keratinous materials, wool wax, and sericin. State of the art and future prospects for the utilization of these materials in the production of textile auxiliaries; Viz. softeners, binders, and flame-retardants, were discussed.

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“…This could be attributed to the presence of polar groups along keratin macromolecules viz. ‫ــ‬NH2, ‫ــ‬OH, and ‫ـــ‬ COOH groups which are able to form hydrogen bonds with water molecules [24].…”

Section: Water Absorbency Of the Binder Filmsmentioning

confidence: 99%

Preparation, Characterization, and Utilization of the Suspended-Keratin Based Binder in Pigment Printing of Man-Made Fibres

et al. 2017

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USPENDED keratin-based binder (Su-KBB) was prepared from renewable cheap natural resources; namely, coarse Egyptian wool fleece or feather to replace the commercially used synthetic binders required for pigment printing technique. Most of the commercially used binders are relatively expensive, environmentally unfriendly and imported from abroad. The said Su-KBB was prepared using safe chemicals, reagents and solvents for extraction of keratin from its natural resources. Chemical, physical, and thermal characteristics of the said binder were assessed and compared with the starting material. The prepared Su-KBB was utilized as a cheap eco-friendly binder in printing of polyester, poly acrylonitrile, viscose as well as polyester/viscose, and polyester/acrylic blends. Different concentrations of Su-KBB were prepared, and different amounts were added to the pigment paste in presence or absence of a cross-linker. The color strength of the printed fabrics and their fastness properties to light, washing, and perspiration n were evaluated. The effect of the used binder on bending stiffness of the printed fabrics was assessed. Results of this study showed that printed fabrics using Su-KBB exhibit almost similar color strength values as the commercial binder (CB). The rubbing fastness of Su-KBB on using cross-linker was acceptable and comparable with that of the CB.

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Physico-chemical properties of keratin-polyvinyl alcohol composite

Cited by 27 publications

References 14 publications

Keratin: dissolution, extraction and biomedical application

Keratin: dissolution, extraction and biomedical application

Potential Applications of Textile Wastes and By-products in Preparation of Textile Auxiliaries

Preparation, Characterization, and Utilization of the Suspended-Keratin Based Binder in Pigment Printing of Man-Made Fibres

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