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Natural polymers hydrogels were prepared by solution blending of gelatin, sodium alginate and carboxymethyl cellulose isolated from pineapple peel, and cross-linking with CaCl2 and glutaraldehyde solutions. The prepared hydrogels were characterized by Fourier transform infrared spectroscopy, X-ray diffraction and field emission scanning electron microscope. The swelling behaviors and responsiveness...
A photocatalyst consisting of a cellulose hydrogel loaded with CdxZn1−xS (CdxZn1−xS-Gel) was prepared, and its photocatalytic water splitting activity was studied. At room temperature, the CdxZn1−xS particles with an average size of about 3 nm were loaded in carboxymethyl cellulose hydrogel by an in situ chemical reaction. This synthesis method was simple and repeatable. Diffuse reflectance UV–vis...
Dual responsive composite hydrogels were successfully prepared by combining cellulose nanofibril (CNF) isolated by 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated oxidation with thermally responsive poly(N-isopropylacrylamide) (PNIPAAm) for drug release at 10 wt% CNF loading and − 20 °C polymerization temperature. pH responsive hydrogels were acquired by adjusting the carboxyl charge...
Nanocomposite hydrogels with conductive and magnetic properties can be used in a variety of new applications. However, the preparation of stable nanocomposite of conductive polymer and magnetic nanoparticles remains a significant challenge because of the aggregation of polymer and nanoparticles induced by the interparticle dipolar forces and electrostatic interactions. This research reported a strategy...
By combining the waste of oil palm empty fruit bunch (EFB) and graphene oxide (GO), a GO/cellulose aerogel bio-nanocomposite was produced via a simple mixing method. The thermal properties of this nanocomposite were examined using thermogravimetric analysis (TGA), and the GO/cellulose aerogel bio-nanocomposite exhibited good thermal stability indicated by a delay in the degradation of the nanocomposite...
Novel cellulose hydrogel with the chiral nematic structure was prepared based on the ionic liquid 1-allyl-3-methylimidazolium chloride ([Amim]+Cl−) as solvent, and the iridescent cellulose aerogel with the chiral nematic structure were prepared through freeze-drying of cellulose hydrogel. Synchrotron X-ray radiation (SAXS and WAXS), polarized optical microscopy and scanning electron microscopy were...
Water pollution with toxic dyes threatens human health world-wide. Herein, we prepared an effective adsorbent hydrogel for removing toxic cationic crystal violet (CV) dye from its aqueous solutions using biodegradable polymers such as; xanthan gum (XG) and poly (N-vinyl imidazole) (PVI). The structure and morphology of the prepared XG/PVI hydrogel and CV loaded hydrogel were characterized by FTIR,...
Chemically crosslinked cellulose hydrogels have wide applications in agriculture and biomedicine, but most crosslinking methods involve potentially toxic crosslinking chemistries or lack significant control over the final modulus of the material. To overcome these challenges, carboxymethyl cellulose (CMC) hydrogels were synthesized utilizing thiol-ene click chemistry. CMC was functionalized with norbornene...
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