Optimized synthesis and swelling properties of a pH-sensitive semi-IPN superabsorbent polymer based on sodium alginate-g -poly(acrylic acid-co -acrylamide) and polyvinylpyrrolidone and obtained ...sp.info Optimization of Synthesis of Spherical Lignosulphonate ...Optimization of Synthesis of Spherical Lignosulphonate Resin and Its Structure Characterization* June 2008 Chinese Journal of Chemical Engineering 16(3):407–410sp.info How does lignosulfonate increase the solubility of water?Lignosulfonates present sulfonation degree, this increases the water solubility [ 3 ].See all results for this questionsp.info How is lignin obtained in the kraft process?The kraft process for obtaining lignin consists in two consecutive steps. In the first step, an aqueous solution of sodium hydroxide and sodium sulfate react with the wood in a digester, a container at high pressure, at around 170 °C [ 12, 17 ]. In a second step, the kraft lignin is obtained [ 18 ].See all results for this question
The different processes produce different types of lignins [ 13 ], for example, alkali lignin, which is mainly obtained from the kraft process [ 14 ], hydrolytic lignin obtained by enzymatic hydrolysis [ 15 ], organosolv lignin by organosolv process [ 16 ], and lignosulfonates obtained by the sulfite process [ 3 ]. 1.1.1. Kraft ProcessSee all results for this questionsp.info What are the applications of lignin based hydrogels?Furthermore, herein are also reviewed the current applications of lignin hydrogels as stimuli-responsive materials, flexible supercapacitors, and wearable electronics for biomedical and water remediation applications. 1. IntroductionSee all results for this questionsp.info Transformation of lignosulfonate into graphene-like 2D ...In this paper, a facile approach to the synthesis of high quality graphene nanosheets in large scale through electrochemical reduction of exfoliated graphite oxide precursor at cathodic potentials ...Estimated Reading Time: 12 minssp.info Separation and purification of lignosulfonate | Request PDFIf properly optimized and controlled, strain HY-H may play a role in the treatment of pulp and paper wastewater containing a high concentration of lignosulfonate, as well as in the lignocellulose ...Estimated Reading Time: 11 mins
Optimized synthesis of lignosulphonate-g-poly(acrylic acid-co-acryl- ... Lignin has been accepted widely as the raw material for the synthesis of bio-based hydrogels due to its hydrophilic nature ...Estimated Reading Time: 6 minssp.info Green assembly of high-density and small-sized silver ...Jan 01, 2021 · The morphological structure of pure PF and SLPF spheres were investigated by using FESEM and HRTEM. The surface morphologies of composite spheres are illustrated in Fig. 1a–j, and their corresponding size histograms are presented in Fig. 1k–o, respectively. All of these composites were synthesized by hydrothermal method, and the addition amount of SL was the only difference.sp.info Hierarchical Porous Carbon with Interconnected Ordered ...Apr 21, 2020 · Using biowastes as precursors for the preparation of value-added nanomaterials is critical to the sustainable development of devices. Lignosulphonates are the by-products of pulp and paper-making industries and usually discarded as wastes. In the present study, lignosulphonate is used as the precursor to prepare hierarchical ordered porous carbon with interconnected pores for the ...sp.info Nanofiltration Membranes via Layer-by-layer Assembly and ...May 27, 2020 · Layer-by-layer (LbL) assembly technology is a facile method for constructing thin film composite membrane. Herein, a novel nanofiltration (NF) membrane was prepared by LbL assembly of polyethyleneimine (PEI) and sodium lignosulfonate (LS) followed by cross-linking. The surface composition, morphology, and property of PEI/LS bilayer were detailedly investigated by FTIR/ATR, …
Mar 01, 2021 · A green and facile synthesis of anisotropic 3D architecture high-performance carbon catalyst has been a hot research topic. Herein, a facile and scalable strategy was developed to fabricate an N, S co-doped microcellular carbon from natural polymers of chitosan (N-source) and lignosulfonate (S-source), with the properties enhanced as a result of pre-cryocrushing of natural polymer-based …sp.info Synthesis and assembly of extended quintulene | Nature ...Aug 07, 2020 · Synthesis of extended quintulene. Inspired by the synthesis of extended Kekulenes 9, we selected 5CMP with a pentagonal inner cavity as macrocyclic precursor (Fig. …sp.info Mechano-chemical synthesis of high-stable [email protected] …Mar 10, 2019 · The manufacture of the testing batteries comprised of pasting, curing, formation and assembling processes. The fabrication of lead paste and identical curing and formation program are shown in the Supporting Information.Lead paste (27.5 g) was coated on a Pb-Ca alloy grid of 35 × 60 × 1.2 mm 3 to form a negative plate. After the pasting, curing and formation processes, the major part of …sp.info Journal of Ma terials Chemistry Alignosulphonate is water soluble and has a large content of reactive hydroxyl groups and aromatic rings. The reactive hydroxyl groups make lignosulphonate crosslink with other molecules such as chitosan, 22 phenol, 23 and lignosulphonate itself. 24 The crosslinked lignosulphonate has more ordered
Oct 01, 2019 · A systematically designed formulation and optimized synthesis conditions are critical parameters in designing a specific HG with required characteristic. Low turnover number, lesser resistivity and mechanical strength are the major issues for its commercialization in the area of industrial wastewater treatment.sp.info Lignin-Based Hydrogels: Synthesis and ApplicationsPolymers obtained from biomass are an interesting alternative to petro-based polymers due to their low cost of production, biocompatibility, and biodegradability. This is the case of lignin, which is the second most abundant biopolymer in plants. As a consequence, the exploitation of lignin for the production of new materials with improved properties is currently considered as one of the main ...sp.info Materials | Free Full-Text | Lignosulfonate-Based ...2 days ago · Table 1. Formulations of the LS-based PU adhesives prepared. For the study of the curing process using DSC and DMA, the stirring time was 30 s. For the preparation of the samples used for FTIR and TGA analyses, a 5 min stirring was performed after which the adhesive was left curing for 48 h at room temperature.sp.info The integration of catalyst design and process ...Sodium lignosulphonate (10 g, 98 wt%, Macklin) was dissolved with deionized water in a three-necked bottle (500 mL). The pH of the aqueous solution was adjusted to 12.0 by using 20 wt% NaOH (98 wt%, Aladdin) solution. 3-Chloro-2-hydroxypropyl trimethylammonium chloride (65 wt%, 10.76 g, Aladdin) was added into the mixture dropwise when the ...
May 02, 2018 · Depleting conventional fuel reserves has prompted the demand for the exploration of renewable resources. Biomass is a widely available renewable resource that can be valorized to produce fuels, chemicals, and materials. Among all the fractions of biomass, lignin has been underutilized. Due to its complex structure, recalcitrant nature, and heterogeneity, its valorization is relatively ...sp.info Nanomaterials | Free Full-Text | The Self-Assembly of ...Lignin serves as a significant contributor to the natural stock of non-fossilized carbon, second only to cellulose in the biosphere. In this review article, we focus on the self-assembly properties of lignin and their contribution to its effective utilization and valorization. Traditionally, investigations on self-assembly properties of lignin have aimed at understanding the lignification ...sp.info Selective photocatalysis of lignin-inspired chemicals by ...Oct 16, 2017 · The option of performing in situ catalyst synthesis in a reactor is a new strategy that can be achieved using a synergistic combination of sonochemical and/or chemical synthesis. Recently, TiO 2 suspended in water was passed though Teflon capillary tubing under ultrasound irradiation, and thin layers of commercial TiO 2 could be coated in the ...sp.info Hierarchical Porous Carbon with Interconnected Ordered ...used in the template methods for the synthesis of porous carbon with ordered pore structure [11, 12, 20]. Many porous carbons are prepared from the expensive and non-renewable surfactants and block-copolymers. Lignin is the second most abundant organic materials and the most abundant aromatic polymer existing in plant spe-cies .
Oct 28, 2021 · Layered double hydroxides (LDHs) have attracted interest as reinforcing fillers in elastomers due to their ease of synthesis and customisability. A systematic review was performed on the effect of LDHs on the mechanical properties of elastomers using the Scopus database. Of the 61 articles relevant to the search criteria, the majority were published on polyurethane (PU) and nitrile butadiene ...sp.info Benha University - BU- Utilization of Fatty acid in heterocyclic synthesis.Part XI : Facile procedure for one pot synthesis of functionalized thiadiazoles, thiadiazolo[3,2-a]pyimidine and …sp.info CN102516784B - Conductive composition containing …CN102516784B CN201110396350.0A CN201110396350A CN102516784B CN 102516784 B CN102516784 B CN 102516784B CN 201110396350 A CN201110396350 A CN 201110396350A CN 102516784 B CN102516784 B CN 102516784B Authority CN China Prior art keywords acid lignosulfonic acid poly ethylene dioxythiophene weight Prior art date 2011-12-02 Legal status (The …sp.info Fabrication of mesoporous [email protected] composite to remove ...Jan 18, 2019 · In addition, organic solvent like dioxane was usually used to promote the solubility of lignin. So far, utilizing soluble lignosulphonate to prepare SiO 2 /lignin composite remains rare (Klapiszewski et al. 2014). Unlike previous studies, SiO 2 @SLS has been fabricated via a facile method by one step in this work. To accomplish the synthesis ...
Feb 11, 2019 · The self-assembly process of lignin deposition occurs in an aqueous environment and is directed by noncovalent interactions between monomers and dirigent proteins [75,76]. Another crucial aspect of xylogenesis and lignin assembly is substratum effects (lignin–carbohydrate and lignin–protein interactions) and their role in self-assembly.sp.info New functional β-chitin/calcium phosphate as promising ...Mar 27, 2019 · A new hybrid material consisting of β-chitin and dicalcium phosphate anhydrous (DCPA) with interesting functional properties was successfully prepared at moderate temperature via mechanochemical route and served as a support for copper nanocatalyst (Cu(NPs)) in the degradation of methylene blue (MB). Cu(NPs) were obtained from the in situ chemical reduction of copper ions using …sp.info Biopolymer hybrid electrodes for scalable electricity ...Present day electrochemical energy storage systems are not fully scalable and are expensive.1 Hence, breakthroughs in the storage of electricity would enable an accelerated use of renewable electricity in electrical power grids, vehicles and in mobile electronics when far away from the grid system. It can also have a major impact in places that are far away from the electrical grids by dramatically changing the lifestyles of a large part of the global population who still lack access to electricity.2Hence, cheap and s…See more on pubs.rsc.orgsp.info Understanding Graphene Response to Neutral and Charged ...Oct 22, 2018 · 2.1. Synthesis and Characterization of the Epitaxial Graphene. Epitaxial graphene on on-axis SiC (Gr/SiC) was synthesized by sublimating Si atoms from SiC substrates at high temperature .Thermal decomposition of the semi-insulting Si-face (0001) 4H-SiC substrate (7 × 7 mm 2) occurred in argon atmosphere using an inductively heated graphite container with well controlled temperature profile.Some results are removed in response to a notice of local law requirement. For more information, please see here.
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