TY - JOUR
T1 - Ductile keratin/deacetylated chitin composites with nanoparticle-induced formation of ordered and entangled structures
AU - Mu, Bingnan
AU - Hassan, Faqrul
AU - Wu, Qianmei
AU - Yang, Yiqi
N1 - Funding Information:
The research has been supported by the United States Department of Agriculture National Institute of Food and Agriculture (award number 2019-67021-29940 ), Nebraska Environmental Trust (NET Grant 18–116 ), and the Agricultural Research Division at the University of Nebraska-Lincoln . The research was performed in part in the Nebraska Center for Materials and Nanoscience , which are supported by the National Science Foundation under Award ECCS : 2025298 , and the Nebraska Research Initiative. Bingnan is grateful to the John and Louise Skala Fellowship, Education and Human Sciences Fellowship, and AATCC Students Grant for their financial support. Faqrul is grateful to Dr. Joan Laughlin Fellowship.
Funding Information:
The research has been supported by the United States Department of Agriculture National Institute of Food and Agriculture (award number 2019-67021-29940), Nebraska Environmental Trust (NET Grant 18?116), and the Agricultural Research Division at the University of Nebraska-Lincoln. The research was performed in part in the Nebraska Center for Materials and Nanoscience, which are supported by the National Science Foundation under Award ECCS: 2025298, and the Nebraska Research Initiative. Bingnan is grateful to the John and Louise Skala Fellowship, Education and Human Sciences Fellowship, and AATCC Students Grant for their financial support. Faqrul is grateful to Dr. Joan Laughlin Fellowship.
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/11/10
Y1 - 2020/11/10
N2 - Highly ductile and wet-durable bio-composites from keratin reinforced by chitin-nanoparticles with engineered deacetylation have been developed. Though featuring good biodegradability and biocompatibility, poultry-feather-extracted keratin-based composites usually suffered from poor ductility and moisture stabilities because of poor interfacial properties, limited recovery of ordered protein structures and crosslinkages. In this work, chitin-nanoparticles with engineered deacetylation were used to reinforce keratin. Via engineered deacetylation, chitin-nanoparticles not only improved interfacial interactions but also formed crosslinkages with keratin. As a result, ordered keratin structures with high degree of entanglement in composites were substantially formed without addition of any coupling agents. Furthermore, engineered deacetylation for chitin could adjust the wet performance of composites via control of hydrophilicity of matrix and reinforcements. Via control of regularity and hydrophilicity of molecules by chitin-nanoparticles, mechanical properties and wet performance of keratin-based composites can be substantially improved. Reinforced keratin composites had a 230%, 260%, 540% increase in breaking strain, breaking stress and ductility, respectively as well as 94% weight retention after immersed in water for 1 week.
AB - Highly ductile and wet-durable bio-composites from keratin reinforced by chitin-nanoparticles with engineered deacetylation have been developed. Though featuring good biodegradability and biocompatibility, poultry-feather-extracted keratin-based composites usually suffered from poor ductility and moisture stabilities because of poor interfacial properties, limited recovery of ordered protein structures and crosslinkages. In this work, chitin-nanoparticles with engineered deacetylation were used to reinforce keratin. Via engineered deacetylation, chitin-nanoparticles not only improved interfacial interactions but also formed crosslinkages with keratin. As a result, ordered keratin structures with high degree of entanglement in composites were substantially formed without addition of any coupling agents. Furthermore, engineered deacetylation for chitin could adjust the wet performance of composites via control of hydrophilicity of matrix and reinforcements. Via control of regularity and hydrophilicity of molecules by chitin-nanoparticles, mechanical properties and wet performance of keratin-based composites can be substantially improved. Reinforced keratin composites had a 230%, 260%, 540% increase in breaking strain, breaking stress and ductility, respectively as well as 94% weight retention after immersed in water for 1 week.
KW - Bio composites
KW - Mechanical properties
KW - Nano particles
KW - Particle-reinforced composites
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U2 - 10.1016/j.compscitech.2020.108462
DO - 10.1016/j.compscitech.2020.108462
M3 - Article
AN - SCOPUS:85091673623
VL - 200
JO - Composites Science and Technology
JF - Composites Science and Technology
SN - 0266-3538
M1 - 108462
ER -