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Sensitive strain sensors have attracted more attention due to their applications in health monitoring and human-computer interaction. However, the problems existing in conventional hydrogels, such as inherent brittleness, freezing at low temperature, low toughness, and water evaporation, have greatly hindered the practical applications. In order to solve the above problems, herein, we designed dual network multifunctionality organohydrogels using polyvinylpyrrolidone (PVP) and polyvinyl alcohol (PVA) covalent cross-linking polymer as the first network, the bacterial celluloses (BCs) and calcium chloride by ligand binding as the second network. The prepared organohydrogels showed good conductivity and sensitivity over a wide temperature range (-20 ∼ 40 ℃), and maintained long-term stability (>15 days) in the air. In addition, the dynamic combination of BCs-Ca 2 + and hydrogen bonds in the binary system further endows the organohydrogels with excellent tensile strength (≈1.0 MPa), tensile strain (≈1300%), toughness (≈6.2 MJ m -3 ), conductivity (3.4 S m -1 ), gauge factor (≈1.24), adhesion (≈0.3 MPa), and self-healing properties (self-healing tensile strain to 632%). Therefore, this organohydrogel has potential candidates for flexible electronic skin, motion monitoring, and soft robotics., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2021 Elsevier Inc. All rights reserved.)

The synergistic effects of lignite and cellulose co-pyrolysis and co-liquefaction were investigated. The optimal liquid fuel yield of co-pyrolysis was 34.72% at a reaction temperature of 550 °C, with a holding time of 30 min, whereas that of co-liquefaction was 39.26% at a reaction temperature of 340 °C, with a holding time of 30 min, an ethanol content of 60% in sub-/supercritical ethanol-water, and a liquid-material ratio of 10:1 (ml/g). Liquid fuel obtained under the best conditions was performed using Fourier transform infrared (FTIR) spectroscopy and gas chromatograph-mass spectrometer (GC-MS). The results of liquid fuel characterization showed that a synergy in co-pyrolysis and co-liquefaction, and the synergy of co-liquefaction was better than that of co-pyrolysis. The reaction mechanism revealed that the presence of the electron-supplying groups generated from cellulose cracking and ethanol reduced the bond energy in the macromolecular structure of lignite and promoted the thermal conversion of lignite., (Copyright © 2019 Elsevier Ltd. All rights reserved.)

Developing new energy technology is a significant challenge in the context of the energy crisis. As a novel energy conversion device to convert mechanical energy into electricity, the triboelectric nanogenerator (TENG) has attracted significant attention in the past few years. The choice of component materials directly affects the cost, environmental performance, output performance, and preparation process of a TENG. In recent years, cellulose paper has become an ideal material for fabricating a TENG due to its lightweight, biodegradability, low‐cost, high flexibility, environmental friendliness, porosity, and easy modification. Cellulose paper‐based TENG has become a hot topic in the field of green energy. This paper systematically summarizes the research progress of the cellulose paper‐based TENG. The advantages of cellulose paper as raw material to fabricate a TENG, followed by introducing the different roles of cellulose paper in paper‐based TENGs, are first discussed. Then the recent progress in energy storage, performance optimization methods, hybridization, and applications of cellulose paper‐based TENGs is successively elaborated. Finally, some perspectives and challenges for the future development of cellulose paper‐based TENG are discussed to provide guidance. [ABSTRACT FROM AUTHOR]

A high-barrier, strong, and antibacterial paper was fabricated by coating the acetylated cellulose solution with different contents of cinnamaldehyde (CIN) on Kraft paper. The antibacterial, antioxidant, mechanical, and barrier properties of coated paper were investigated. When the amount of CIN added in coating reached 6% v/v, the coated paper exhibited excellent antioxidant activity and antibacterial activity against Escherichia coli and Staphylococcus aureus. Notably, the dry and wet tensile strength of paper after coating was increased by 26.4 and 10.6 MPa, respectively. Furthermore, the coated papers' barrier properties against oil, water, water vapor, and oxygen were dramatically improved, especially for the water barrier rate up to 96.4%. Our coated papers with over 6% v/v CIN could extend beef's shelf-life for at least 4 days, which exhibited a promising prospect in eco-friendly antibacterial packaging. [ABSTRACT FROM AUTHOR]

[Display omitted] • A synthesis method for the GO-COOH. • The carboxyl group high ratio of GO-COOH based on DES. • This method more green than conventional method. • GO-COOH/CNF adsorbent had high adsorption for MB. • The potential for environmentally friendly cellulose-based adsorbent for dye wastewater. An efficient adsorbent for eliminating methylene blue (MB) from water solutions was created by combining carboxyl-functionalized graphene oxide (GO-COOH) with cellulose nanofiber. The GO-COOH was prepared using a malonic acid-choline chloride deep eutectic solvent, resulting in a carboxyl group ratio of 5.3 % and a C/O ratio of 2.15. This novel approach addresses the issue of partial reduction of GO-COOH observed in traditional preparation methods, thereby enhancing the adsorption capacity of the adsorbent for MB (611.44 mg g−1). In general, this method provides the opportunity for producing cellulose-based adsorbents for dye wastewater on a large scale, while being environmentally friendly. [ABSTRACT FROM AUTHOR]