In this paper, nanochitin was used as an alternative natural nanomaterial to combine with cellulose fibers for fabricating high-strength paper. Two typical chitin nanowhiskers having contrasting sign of surface charge were compared to evaluate the enhancement performance on paper in details. The results show that nanochitin with positive charges on the surface has a significant effect on the strength properties of the prepared paper, especially on wet strength. When the dosage of chitin nanowhiskers was 2%, the wet strength index was increased to 2.48 N·m/g, which is important for paper-based analytical devices with the common use in liquid analysis. Typical colorimetric glucose assays were successfully performed, suggesting the improved analytical performance on these prepared paper.
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http://dx.doi.org/10.1016/j.ijbiomac.2020.02.154 | DOI Listing |
Carbohydr Polym
February 2025
Institute of Macromolecular Compounds, Branch of Petersburg Nuclear Physics Institute named by B.P. Konstantinov, National Research Centre «Kurchatov Institute», Bolshoi VO 31, St. Petersburg 199004, Russia. Electronic address:
The improvement of the specific pharmacological activity of agents with antimicrobial and antiprotozoal properties (e.g. metronidazole, MET) is of interest for clinical applications in the treatment of bacterial infections.
View Article and Find Full Text PDFMaterials (Basel)
November 2024
Research Institute for Sustainable Humanosphere, Kyoto University, Uji 611-0011, Japan.
Langmuir
October 2024
Graduate School of Science and Technology, Shinshu University, Tokida 3-15-1, Ueda 386-8567, Japan.
Hybrid nanoparticles composed of chitin nanowhiskers (ChNWs) and gold nanoclusters (AuNCs) having an improved stability were prepared. The grafting of monomethoxypoly(ethylene glycol) (mPEG) and subsequent surface adsorption of AuNCs enabled the steric stabilization of ChNW/AuNC hybrids. mPEGs with terminal formyl groups and diethylacetal protecting groups were grafted via in situ deprotection and reductive amination with the surface amino groups (SAGs) of ChNWs.
View Article and Find Full Text PDFACS Macro Lett
September 2024
Center of Excellence in Bioresources to Advanced Materials (B2A-CE), The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand.
Nanowhiskers in a colloidal dispersion are known to form chiral nematic liquid crystals (CNLC), as seen in a cellulose nanowhisker or so-called cellulose nanocrystal and chitin nanowhisker. In our related work, we clarified that once the thus-created chitin nanowhiskers with surface modified by chitosan (CTWK-CS) in CNLC phase were wet-spun, we could directly obtain anisotropic microfibers containing the highly ordered CTWK-CS. This drastic structural transformation from CNLC to anisotropic microfibers might relate to several important stages, i.
View Article and Find Full Text PDFInt J Biol Macromol
October 2024
College of Chemistry and Environment, Guangdong Ocean University, 524088 Zhanjiang, Guangdong, China.
Petrochemical resources are non-renewable, which has impeded the development of synthetic polymers. The poor degradability of synthetic polymers poses substantial environmental pressure. Additionally, the high cost of synthetic biopolymers with excellent degradation performance limits their widespread application.
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