In this work, a series of functional nanocrystals (F-CNCs) was successfully produced by an efficient preparation method, combining acid hydrolysis and Fischer esterification with various organic acids. Functionalities such as ATRP initiators, double bonds, triple bonds, and thiols could be incorporated on CNCs. Surface modification was confirmed by FT-IR, XPS, and elemental analysis. Physical properties of F-CNCs were assessed by AFM, XRD and TGA. Moreover, ATRP initiator functionalized CNCs were utilized to graft poly(methyl methacrylate) via ATRP, thiol functionalized CNCs were reacted with Ellman's reagent to determine the thiol content and dye disperse red 13 was attached to alkyne functionalized CNCs to estimate the propiolate content. The herein presented method is a highly versatile and straightforward procedure for the preparation of F-CNCs which is believed to be a better alternative for the commonly utilized, extensive, multistep, and time consuming post functionalization methods.
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http://dx.doi.org/10.1016/j.carbpol.2014.08.110 | DOI Listing |
J Biomed Mater Res B Appl Biomater
January 2025
Department of Polymer and Biomaterials Science, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Szczecin, Poland.
Fabricating complex hierarchical structures mimicking natural vessels and arteries is pivotal for addressing problems of cardiovascular diseases. Various fabrication strategies have been explored to achieve this goal, each contributing unique advantages and challenges to the development of functional vascular grafts. In this study, a three-layered tubular structure resembling vascular grafts was fabricated using biocompatible and biodegradable copolymers of poly(butylene succinate) (PBS) using advanced manufacturing techniques.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Beijing 100193, China. Electronic address:
The development of functional hydrogel dressings with robust mechanical properties has posed a significant challenge in expediting the healing process of MRSA-infected wounds. To address this, a composite hydrogel, comprising carboxylated soybean cellulose nanocrystals (CNCs), poly(N-isopropyl acrylamide) (PNIPAM), dimethyl diallyl ammonium chloride (PDADMAC), and kaolin (CN/P-K) was synthesized. CNCs served to stabilize the interpenetrating polymer networks of PNIPAM and PDADMAC through hydrogen bonding and electrostatic interactions, respectively, while the kaolin interlayer improved the material toughness.
View Article and Find Full Text PDFFront Plant Sci
December 2024
National Key Laboratory for Tropical Crop Breeding, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication)/College of Tropical Agriculture and Forestry, Hainan University, Sanya, Hainan, China.
Introduction: () is a small transcription factor family known for its role in various developmental processes in plants, particularly in binding GA motifs and regulating flower and seed development. However, research on the functional characteristics and target genes of in coconut () is limited.
Methods: In this study, we systematically characterized the gene structure, conserved protein domains, gene expansion, and target genes of in the coconut genome.
Int J Biol Macromol
December 2024
Polymeric Biomaterials Laboratory, Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan. Electronic address:
Bacterial infections in wounds, especially in patients with chronic conditions like diabetic wounds, pose significant treatment challenges. Addressing the susceptibility to infection is crucial, and the development of functional dressings to prevent bacterial invasion has proven a promising strategy. Cellulose nanocrystals (CNCs), derived from bio-resources and functioning as nanoparticles (NPs), were modified with poly[2-(tert-butylamino) ethyl methacrylate] (PTA) through atom transfer radical polymerization (ATRP) to create CNCs-graft-PTA NPs (CNPs).
View Article and Find Full Text PDFInt J Mol Sci
November 2024
Bioproducts Group, Bioresources Department, National Institute for Research & Development in Chemistry and Petrochemistry-ICECHIM, Spl. Independentei No. 202, Sector 6, 060021 Bucharest, Romania.
Yeasts have emerged as an important resource of bioactive compounds, proteins and peptides, polysaccharides and oligosaccharides, vitamin B, and polyphenols. Hundreds of thousands of tons of spent brewer's yeast with great biological value are produced globally by breweries every year. Hence, streamlining the practical application processes of the bioactive compounds recovered could close a loop in an important bioeconomy value-chain.
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