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首页> 外文期刊>Composites Science and Technology >Ductile keratin/deacetylated chitin composites with nanoparticle-induced formation of ordered and entangled structures
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Ductile keratin/deacetylated chitin composites with nanoparticle-induced formation of ordered and entangled structures

机译：具有纳米颗粒诱导的有序和缠结结构的延性角蛋白/脱乙酰基的几丁质复合材料

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摘要

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.
机译：已经开发出由Chitin-纳米粒子的角蛋白的高度延展性和湿耐用的生物复合材料，其具有工程化脱乙酰化的Chitin-纳米颗粒。虽然具有良好的生物降解性和生物相容性，但由于界面性质差，有序蛋白质结构和交联的速度有限，因此通常患有较差的基于角蛋白基复合材料，通常患有较差的延展性和水分稳定性。在这项工作中，用工程化脱乙酰化的甲蛋白纳米粒子用于加强角蛋白。通过工程化脱乙酰化，几丁质 - 纳米颗粒不仅改善了界面相互作用，而且还形成了与角蛋白的交联。结果，基本上形成具有高度缠结的有序角蛋白结构，而不加入任何偶联剂。此外，对甲壳素的工程脱乙酰化可以通过控制基质和增强剂的亲水性来调节复合材料的湿性能。通过Chitin-纳米颗粒的定期控制和亲水性，可以显着提高基于角蛋白基复合材料的机械性能和湿性能。沉积应变，断裂应力和延展性的增强角质素复合材料分别增加了230％，260％，540％，分别沉积在水中后的94％重量保留1周。

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  • 来源
    《Composites Science and Technology》 |2020年第10期|108462.1-108462.7|共7页
  • 作者

    Mu Bingnan; Hassan Faqrul; Wu Qianmei; Yang Yiqi;

  • 作者单位

    Univ Nebraska Lincoln Dept Text Merchandising & Fash Design 234 HECO Bldg Lincoln NE 68583 USA;

    Univ Nebraska Lincoln Dept Text Merchandising & Fash Design 234 HECO Bldg Lincoln NE 68583 USA;

    Univ Nebraska Lincoln Dept Stat 340 Hardin Hall North Wing Lincoln NE 68583 USA;

    Univ Nebraska Lincoln Dept Text Merchandising & Fash Design 234 HECO Bldg Lincoln NE 68583 USA|Univ Nebraska Lincoln Dept Biol Syst Engn 234 HECO Bldg Lincoln NE 68583 USA|Univ Nebraska Lincoln Nebraska Ctr Mat & Nanosci 234 HECO Bldg Lincoln NE 68583 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Bio composites; Nano particles; Particle-reinforced composites; Mechanical properties;

    机译：生物复合材料;纳米颗粒;粒子增强复合材料;机械性能;

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