Ultrafast Thermal Conduction of Phase Change Fiber Enabled by Sheath Confinement‐Induced Ordered Orientation of Hydroxylated BNNs

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 5, 2025

Phase change fibers (PCFs) are increasingly popular in thermal storage and release applications, such as temperature management. However, a simple but effective integration of conductive materials into PCFs to deliver ultrafast conduction remains big challenge. Herein, facile one-pot coaxial wet spinning strategy based on sheath-confinement-induced orientation arrangement hydroxylated boron nitride nanosheets (BNNs-OH) is proposed fabricate the high-performance PCFs. For core-sheath PCFs, cellulose nanofiber (CNF)-reinforced paraffin (CNF/PW) emulsions serve phase core, while dissolved well-dispersed BNNs-OH act sheath precursor. By increasing extrusion speed liquid contraction fiber gradually finalized induce alignment confinement effect. Consequently, highly oriented (f = 0.8) endow with high transition enthalpy (125.1 J g-1), excellent conductivity (10.15 W m-1K-1), rapid heat transfer rate (1.6 cm s-1); moreover, as-prepared show good tensile strength (11.21 MPa) leakage-proof (0.13%). The combined thermochromic dyes for functional fabrics or applied management phone, demonstrating dissipation.

Язык: Английский

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Smart and robust phase change cellulose fibers from coaxial wet-spinning of cellulose nanofibril-reinforced paraffin capsules with excellent thermal management

Carbohydrate Polymers, Год журнала: 2024, Номер 346, С. 122649 - 122649

Опубликована: Авг. 24, 2024

Язык: Английский

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Study of the effects of DES-like mixtures on the properties of unbleached softwood kraft pulp

Results in Chemistry, Год журнала: 2024, Номер 9, С. 101670 - 101670

Опубликована: Июль 1, 2024

The scientific community has been drawn to variations of the processes aimed at obtaining cellulosic fibers. Deep eutectic solvents-like mixtures have shown be a potential and green replacement for pulping where, in addition cellulose fibers, lignin hemicellulose are obtained as by-products. In this research, treatment softwood kraft pulp using deep based on choline chloride lactic acid was studied. We chose temperature, ratio input unbleached pulp, molar between components solvent studied operating conditions. As part chemical characterization, we analyzed Kappa number, which indicates remaining followed by calculation efficiency. addition, process made it possible obtain solid under different conditions, were characterized analytical, optical, spectrometric methods. number delignified fibers ranged from 9.59 when 1:9 (1 h; 120 °C; 1:10) 20.88 (choline chloride/lactic 1:6; 1 80 1:5), represents efficiency values 6.79 % 57.19 %.

Язык: Английский

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A deep eutectic solvent with bifunctional acid sites treatment to upgrade a bamboo kraft pulp into a cellulose-acetate grade dissolving pulp

Carbohydrate Polymers, Год журнала: 2024, Номер 348, С. 122942 - 122942

Опубликована: Ноя. 2, 2024

Язык: Английский

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Sustainable Pathway for Bagasse Conversion Using Continuous Lactic Acid Catalysis: Production of Xylo-Oligosaccharides, Lignin Nanoparticles, and Dissolving Pulp

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 21, 2024

Organic acid pretreatment has the potential for cleaner production and efficient energy use. This work demonstrated selective separation of hemicellulose lignin from bagasse using lactic (LA), improved processability cellulose. Initially, 0.1% LA hydrolysis converted xylan to xylo-oligosaccharides with a yield 65.0%. Subsequently, was isolated residue by an 80% pretreatment, achieving efficiency 91.2%. Importantly, solid retained high glucan content 88.2%. Following sodium hydroxide incubation, cellulase achieved saccharification 92.5%, which primarily due solubilization pseudolignin de-esterification Additionally, cellulose proved be suitable preparation high-quality dissolving pulp purity Fock reactivity. The recovered solution exhibited (95.7%) contained carboxyl hydroxyl contents, enabling it self-assemble into uniformly sized nanoparticles. Furthermore, even after five cycles reuse, maintained excellent dissolution capacity. Economic assessments also indicated that this process could generate substantial commercial benefits. proposed gradient provided sustainable strategy comprehensive value addition biomass.

Язык: Английский

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Alkaline sulfite anthraquinone and methanol pulps from bamboo for papermaking applications

Biomass Conversion and Biorefinery, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 22, 2024

Язык: Английский

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