Herein, we report on a transparent, water-stable, high oxygen barrier packaging film made from a combination of cellulose nanofiber (CNF) and a fluoropolymer (FP) coating. Nanofibrillation of the hardwood kraft pulp was carried out using succinic anhydride pretreatment and aqueous counter collision (ACC) technique to obtain ultrafine (5-7 nm) succinylated cellulose nanofibers (SCNF), which was readily fabricated into a thin coating (on PET film) as well as a self-standing film. Introducing the FP topcoat on SCNF enabled a synergistic enhancement of both oxygen barrier performance and stability against water-swelling.
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http://dx.doi.org/10.1016/j.carbpol.2020.116823 | DOI Listing |
J Funct Biomater
September 2024
Department of Pharmacology, School of Medicine, Ajou University, Suwon 16499, Republic of Korea.
An ideal extracellular matrix (ECM) replacement scaffold in a three-dimensional cell (3D) culture should induce in vivo-like interactions between the ECM and cultured cells. Highly hydrophilic polyvinyl alcohol (PVA) nanofibers disintegrate upon contact with water, resulting in the loss of their fibrous morphology in cell cultures. This can be resolved by using chemical crosslinkers and post-crosslinking.
View Article and Find Full Text PDFNat Commun
September 2024
Department of Materials Engineering, Paichai University, Daejeon, Korea.
Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS), a successfully commercialized polymeric semiconductor material, has potential as a transparent electrode in flexible electronic devices, yet has insufficient conductivity. We present the synthesis, properties, and directed crystallization of the PEDOT:dodecyl sulfate (PEDOT:DS) film. Iron(III) dodecyl sulfate (Fe(DS)) multi-lamellar vesicles (MLVs), a new growth template, are used to synthesize and direct the growth of the PEDOT:DS film via vapor-phase polymerization of 3,4-ethylenedioxythiophene to form huge PEDOT:DS co-crystal domains within the MLV superstructure.
View Article and Find Full Text PDFInt J Biol Macromol
September 2024
Institute of Functional Textiles and Advanced Materials, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), College of Textiles and Clothing, Qingdao University, Ningxia Road, 308, Qingdao 266071, China; State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China; National Innovation Center of Advanced Dyeing & Finishing Technology, Tai'an, Shandong 271000, China. Electronic address:
Nanocellulose-based film, as a novel new type of film mainly made of nanosized cellulose, has demonstrated an ideal combination of renewability and enhanced or novel properties. Considerable efforts have been made to enhance its intrinsic properties or create new functions to expand its applications, such as in food packaging, water treatment or flexible electronics. In this paper, two different types of deep eutectic solvents (guanidine sulfamate-glycerol and guanidine sulfamate-choline chloride) were formulated and applied to prepare cellulose nanocrystals with dialdehyde cellulose (DAC).
View Article and Find Full Text PDFInorg Chem
April 2024
Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States.
Chiral organic-inorganic metal halides (OIMHs) are attractive for their potential applications in chiral optoelectronics and spintronics, such as circular polarized light emitters, detectors, and chiral-induced spin selectivity. Here, we report three pairs of chiral OIMHs with great water stability constructed from chiral viologens. These OIMHs contain either 1D or 0D structures, however, with small band gaps around 2 eV.
View Article and Find Full Text PDFSoft Matter
July 2023
Solid State and Inorganic Chemistry Group, Department of Chemistry, Indian Institute of Technology Patna, Bihar 801106, India.
Nature creates definite architecture with fluorescence capabilities and superior visual adaptation in many organisms, , cephalopods, which differentiates them from their surroundings in the context of colour and texture that allows them to use this in defence, communication, and reproduction. Inspired by nature, we have designed a coordination polymer gel (CPG)-based luminescent soft material where the photophysical properties of the material can be tuned using a low molecular weight gelator (LMWG) with chromophoric functionalities. Herein, a water-stable coordination polymer gel-based luminescent sensor was created using zirconium oxychloride octahydrate as a metal source and HTATAB (4,4',4''-((1,3,5-triazine-2,4,6-triyl)tris(azanediyl))tribenzoic acid) as a LMWG.
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