Preparation of sound‐insulating material based on discarded cow hair

Zhang, Yiwei; Zhang, Benmin; Zhi-hua, Shan

doi:10.1002/app.46332

Cited by 10 publications

(5 citation statements)

References 33 publications

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“…The formulation with 30 wt. % keratin produced equivalent sound-insulation to asphalt-or rubber-based insulators and superior to polyurethane foam-based insulators for a 20-20,000 Hz frequency range [144].…”

Section: Polyacrylates Polyacrylonitrile (Pan) and Polyacrylamide (Pam)mentioning

confidence: 96%

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Keratin Associations with Synthetic, Biosynthetic and Natural Polymers: An Extensive Review

Donato

Mija

2019

Polymers

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Among the biopolymers from animal sources, keratin is one the most abundant, with a major contribution from side stream products from cattle, ovine and poultry industry, offering many opportunities to produce cost-effective and sustainable advanced materials. Although many reviews have discussed the application of keratin in polymer-based biomaterials, little attention has been paid to its potential in association with other polymer matrices. Thus, herein, we present an extensive literature review summarizing keratin’s compatibility with other synthetic, biosynthetic and natural polymers, and its effect on the materials’ final properties in a myriad of applications. First, we revise the historical context of keratin use, describe its structure, chemical toolset and methods of extraction, overview and differentiate keratins obtained from different sources, highlight the main areas where keratin associations have been applied, and describe the possibilities offered by its chemical toolset. Finally, we contextualize keratin’s potential for addressing current issues in materials sciences, focusing on the effect of keratin when associated to other polymers’ matrices from biomedical to engineering applications, and beyond.

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Section: Polyacrylates Polyacrylonitrile (Pan) and Polyacrylamide (Pam)mentioning

confidence: 96%

“…%) and acrylic resin (acrylic acid, butyl acrylate and methyl methacrylate; 50-90 wt. %), Zhang, Zhang and Shan [144] prepared a sound-insulating film. The formulation with 30 wt.…”

Section: Polyacrylates Polyacrylonitrile (Pan) and Polyacrylamide (Pam)mentioning

confidence: 99%

Keratin Associations with Synthetic, Biosynthetic and Natural Polymers: An Extensive Review

Donato

Mija

2019

Polymers

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“…One of the main components of the waste is cow hair. Every ton of salt-wet cowhide can produce around 85 kg of waste hair [ 1 ]. Compared to wool, cow hairs are particularly difficult to apply in the textile industry due to their short length.…”

Section: Introductionmentioning

confidence: 99%

Preparing Biochars from Cow Hair Waste Produced in a Tannery for Dye Wastewater Treatment

Song

Wang

et al. 2021

Materials

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A large amount of cow hair solid waste is produced in leather production, and a reasonable treatment should be developed to reduce the pollution. In this study, cow hair waste was utilized as the carbon precursor, and N2 was determined to be the most appropriate atmosphere for biochar preparation. We performed a comparison of the properties of biochars that were prepared with different methods, including direct pyrolysis, KOH activation, and the MgO template method. The characterization results show that the highest specific surface area reaches 1753.075 m2/g. Subsequently, the keratin that was extracted from cow hair and purified was used to prepare a biochar with the MgO template method, obtaining an orderly sponge structure. The biochar from cow hair waste was further used to absorb direct blue dye wastewater, and its adsorption capacity reached 1477 mg/g after 10 h with a high efficiency of regeneration. This study successfully utilized keratin-containing hair waste and provides a new source for synthesizing carbon materials for dye wastewater treatment.

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“…Various benefits of bovine hair keratin have been used in several studies, such as for sound insulation films (Zhang Y. et al, 2018), synthetic polymer-based biomaterials, biosynthetic (Donato, R. K., & Mija, A., 2020) for the cosmetic and pharmaceutical industry (Sharma, S., & Gupta, A., 2016), hair protein concentrates for the provision of animal feed (Gau M. R. et al, 2021) Trichophyton rubrum colonies grow slowly in SDA media, which is 2-3 weeks compared to Trichophyton mentagrophytes, which grow in 10 days, so identifying examinations and releasing results for treatment takes a long time (White et al, 2012). The growth of Trichophyton rubrum can be accelerated by adding keratin as a source of growth nutrients.…”

Section: Medical Laboratory Technology Journalmentioning

confidence: 99%

Improved Mycology Media Formula of Corn and Cow’s Hair For Accelerate Superficial Mycosis Growth

Dwiyanti¹,

Lutpiatina²

2021

Med.Lab.Tech.J.

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Potato Dextrose Agar is growth and identification media of fungi that cause superficial mycoses, including Trichophyton rubrum and Trichophyton mentagrophytes with 10–14 days growth period. Modification media is needed to accelerate the growth of the fungus. Zea mays saccharata has a high carbohydrate, and cow’s hair contains high keratin, which can be used as a nutrient to replace fungal growth media. The study aimed to obtain a modified media formula containing Zea mays saccharata as a substitute for dextrose and cow's hair as a source of keratin to accelerate the growth of Trichophyton rubrum and Trichophyton mentagrophytes fungi. The modified media formula is mixing of Zea mays saccharata 15% to 25%, and cow's hair 20mg to 35mg. Acceleration of growth time based of when found microconidia and macroconidia, diameter measurements, and observations of texture and colonies color of Trichophyton rubrum and Trichophyton mentagrophytes. The study results are Zea mays saccharata media with the addition of cow hair for Trichophyton rubrum grew 11 days with 10%+20mg formula and grew only seven days with 25%+35mg formula. Modified media for Trichophyton mentagrophytes grew seven days for 10%+20mg formula, while it was only three days with 25%+35mg formula. The media formula with the fastest growth rate for Trichophyton rubrum and Trichophyton mentagrophytes was at a concentration of 25%+35mg. The Advanced Modified Media can become a patent medium for faster growth of superficial fungi at a lower cost. Further research needs to be done on how long this media can be stored for long-term use.

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Preparation of sound‐insulating material based on discarded cow hair

Cited by 10 publications

References 33 publications

Keratin Associations with Synthetic, Biosynthetic and Natural Polymers: An Extensive Review

Keratin Associations with Synthetic, Biosynthetic and Natural Polymers: An Extensive Review

Preparing Biochars from Cow Hair Waste Produced in a Tannery for Dye Wastewater Treatment

Improved Mycology Media Formula of Corn and Cow’s Hair For Accelerate Superficial Mycosis Growth

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