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High Strength Nanostructured Films Based on Well-Preserved β-chitin Nanofibrils

Abstract

Chitin nanofibrils (ChNF) are interesting high-value constituents for nanomaterials due to the enormous amount of waste from the seafood industry. So far, reported ChNF:s are substantially modified and chemically degraded (shortened) during extraction from the organisms. Here, highly individualized and long native-state β-chitin nanofibrils from Illex Argentinus squid pens are prepared. A mild treatment was developed to preserve molar mass, aspect ratio, degree of acetylation and crystallite structure. The fibrils show uniform diameter of 2-7 nm, very high aspect ratio (up to 750), high degree of acetylation (DA = 99%), and high molar mass (843,500 Dalton). The powder X-ray diffraction analysis showed preserved crystallite structure after protein removal. These “high quality” ChNF:s were used to prepare nanostructured films via vacuum filtration from stable hydrocolloids. The effects of well-preserved “native” fibrils on morphology, and film properties (mechanical and optical), were studied and compared with earlier results based on coarser and shorter, chemically degraded chitin fibrils.

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Publication details

The article was received on 03 Apr 2019, accepted on 09 May 2019 and first published on 09 May 2019


Article type: Paper
DOI: 10.1039/C9NR02870F
Nanoscale, 2019, Accepted Manuscript
  • Open access: Creative Commons BY-NC license
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    High Strength Nanostructured Films Based on Well-Preserved β-chitin Nanofibrils

    Q. Wu, E. Jungstedt, M. Šoltésová, N. E. Mushi and L. A. Berglund, Nanoscale, 2019, Accepted Manuscript , DOI: 10.1039/C9NR02870F

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