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Zeng Y, Feng Y, Zhang J, Streb C, Wang Z, Lv H, Yang GY. Transition metal-substituted polyoxometalate-ionic liquids with remarkable flame retardancy performance. MATERIALS HORIZONS 2024; 11:3604-3612. [PMID: 38747452 DOI: 10.1039/d4mh00099d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/30/2024]
Abstract
The development of effective and novel flame retardants has been attracting considerable attention in extenuating the fire threat of flammable polymer materials including the widely-used epoxy resins. In this work, we pioneeringly report the construction of transition-metal-substituted polyoxometalate-ionic liquids (tmsPOM-ILs) as effective flame retardants, which consist of tetra-metal-containing POMs ([M4(H2O)2(PW9O34)2]10-, M4P2, M = Ni, Cu) anions and tetra-n-heptylammonium [(n-C7H15)4N+, THPA] cations. The resulting tmsPOM-ILs exhibited remarkably improved fire-safety of the epoxy resin (EP) matrix and even at a loading amount of as low as 3 wt%, the flame retardancy efficiency was even higher than that of commercial flame retardants (aluminum hydroxide (ATH), triphenyl phosphate (TPP), and decabromodiphenyl ethane (DBDPE)). Physicochemical and mechanistic studies revealed that the remarkable flame retardancy performance of the tmsPOM-ILs reported is due to their excellent epoxy matrix compatibility and remarkable catalytic charring ability. This work opens up a brand-new research direction of developing next-generation compatible and effective tmsPOM-based molecular flame retardants at the molecular level.
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Affiliation(s)
- Ying Zeng
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectric/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China.
| | - Yeqin Feng
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectric/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China.
| | - Junhao Zhang
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectric/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China.
| | - Carsten Streb
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, Mainz 55128, Germany.
| | - Zhimin Wang
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectric/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China.
| | - Hongjin Lv
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectric/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China.
| | - Guo-Yu Yang
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectric/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China.
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Kundu CK, Song L, Hu Y. Micro crystalline cellulose aided surface modification and deposition of green polyelectrolytes for the improved hydrophilicity and flame retardancy of polyamide 66 fabric. Int J Biol Macromol 2024; 254:127610. [PMID: 38287579 DOI: 10.1016/j.ijbiomac.2023.127610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 09/27/2023] [Accepted: 10/20/2023] [Indexed: 01/31/2024]
Abstract
In this work, microcrystalline cellulose (MCC) treated polyamide 66 (PA66) textiles were coated with green and naturally abundant polysaccharides specifically, chitosan (CS) and sodium alginate (SA) together with phytic acid (PA) via layer by layer (LbL) deposition. The prime focus of such treatment was to intensify both the hydrophilic and flame retardant properties of PA66 fabric substrates. Subsequently, the prepared coatings were further subjected to cross-linking modification by dipping them into the barium (Ba) salt solution. Obtained results indicated that the MCC-modified PA66 exhibited a water contact angle (WCA) value of 00 and revealed a drop in peak heat release rate (pHRR) up to 31 % with complete suppression of melt-dripping. Meanwhile, the Ba-ion-induced cross-linking treatment further escalated this reduction up to 36 % by adding enhanced thermal stability, improved char quality along better wash durability of as prepared coatings. In addition, the combined modification of PA66 textiles with MCC and Ba-ion handed a superb enhancement of physical properties like tensile strength by ca. 50 % compared to the pure PA66. Thus, this MCC-assisted surface modification paves the way for a new kind of greener treatment of PA66 textiles in attaining superior hydrophilic and flame retardant properties of the same.
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Affiliation(s)
- Chanchal Kumar Kundu
- Department of Textile Engineering, Jashore University of Science and Technology, Jashore 7408, Bangladesh; State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China.
| | - Lei Song
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China
| | - Yuan Hu
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China.
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Benhalima T, Chicha W, Ferfera-Harrar H. Sponge-like biodegradable polypyrrole-modified biopolymers for selective adsorption of basic red 46 and crystal violet dyes from single and binary component systems. Int J Biol Macromol 2023; 253:127532. [PMID: 37875183 DOI: 10.1016/j.ijbiomac.2023.127532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/13/2023] [Accepted: 10/16/2023] [Indexed: 10/26/2023]
Abstract
Recently, several researchers have been trying to reduce the ecological effects of water pollution by considering the use of biodegradable materials that prevent the generation of secondary pollution in our environment and enable water reuse. Here, new biodegradable hydrogels based on alginate (Alg), gelatin (Gel) and polypyrrole (PPy) were successfully implemented to remove two known highly toxic cationic dyes from wastewater. The design process was performed in two steps: in-situ polymerization of polypyrrole within the Alg/Gel mixture, followed by hydrogel formation. Biocomposites showed promising efficacy for the removal of both basic red 46 (BR46) and crystal violet (CV) dyes from real and demineralized water samples. However, Alg-Gel-PPy hydrogel showed better selectivity for BR46 than for CV as compared to the pristine Alg-Gel hydrogel. Adsorption of both pollutants on biocomposite hydrogel beads followed the Langmuir isotherm and pseudo-second order kinetic models. Besides, the highest adsorption capacities (125 mg g-1 for BR46 and 88.5 mg g-1 for CV) were obtained for the Alg-Gel-PPy hydrogel, compared with those determined for PPy-free hydrogel (103.09 mg g-1 for BR46 and 86.96 mg g-1 for CV) and remained at a satisfactory level for five adsorption-desorption cycles. Finally, the obtained hydrogels showed excellent biodegradability by natural soil microorganisms, with 91 % decomposition.
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Affiliation(s)
- Tayeb Benhalima
- Materials Polymer Laboratory, Macromolecular Chemistry Department, Faculty of Chemistry, University of Sciences and Technology Houari Boumediene USTHB, B.P. 32 El-Alia, 16111 Algiers, Algeria; Unité de Recherche en Analyses Physico-Chimiques des Milieux Fluides et Sols-Centre de Recherche scientifique et technique en Analyses Physico-Chimiques URAPC-MFS-CRAPC, BP 384, zone industrielle, 42004, Tipaza, Algeria.
| | - Walid Chicha
- Materials Polymer Laboratory, Macromolecular Chemistry Department, Faculty of Chemistry, University of Sciences and Technology Houari Boumediene USTHB, B.P. 32 El-Alia, 16111 Algiers, Algeria
| | - Hafida Ferfera-Harrar
- Materials Polymer Laboratory, Macromolecular Chemistry Department, Faculty of Chemistry, University of Sciences and Technology Houari Boumediene USTHB, B.P. 32 El-Alia, 16111 Algiers, Algeria
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4
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Del Río JI, Juhász L, Kalmár J, Erdélyi Z, Bermejo MD, Martín Á, Smirnova I, Gurikov P, Schroeter B. A greener approach for synthesizing metal-decorated carbogels from alginate for emerging technologies. NANOSCALE ADVANCES 2023; 5:6635-6646. [PMID: 38024290 PMCID: PMC10662111 DOI: 10.1039/d3na00444a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 10/11/2023] [Indexed: 12/01/2023]
Abstract
In the present work, a series of metal nanoparticle-decorated carbogels (M-DCs) was synthesized starting from beads of parent metal-crosslinked alginate aerogels (M-CAs). M-CAs contained Ca(ii), Ni(ii), Cu(ii), Pd(ii) and Pt(iv) ions and were converted to M-DCs by pyrolysis under a N2 atmosphere up to pyrolysis temperatures of TP = 600 °C. The textural properties of M-CAs are found to depend on the crosslinking ion, yielding fibrous pore networks with a high specific mesoporous volume and specific surface area SV (SV ∼ 480-687 m2 g-1) for M-CAs crosslinked with hard cations, Ca(ii), Ni(ii) and Cu(ii), and comparably loose networks with increased macroporosity and lower specific surface (SV ∼ 240-270 m2 g-1) for Pd(ii) and Pt(iv) crosslinked aerogels. The pyrolysis of M-CAs resulted in two simultaneously occurring processes: changes in the solid backbone and the growth of metal/metal oxide nanoparticles (NPs). The thermogravimetric analysis (TGA) showed a significant influence of the crosslinking cation on the decomposition mechanism and associated change in textural properties. Scanning electron microscopy-backscattered electron imaging (SEM-BSE) and X-ray diffraction revealed that metal ions (molecularly dispersed in the parent aerogels) formed nanoparticles composed of elementary metals and metal oxides in varying ratios over the course of pyrolytic treatment. Increasing the TP led to generally larger nanoparticles. The pyrolysis of the nickel-crosslinked aerogel (Ni-CA) preserved, to a large extent, the mesoporous structure and resulted in the evolution of fine (∼14 nm) homogeneously dispersed Ni/NiO nanoparticles. Overall, this work presents a green approach for synthesizing metal-nanoparticle containing carbon materials, useful in emerging technologies related to heterogeneous catalysis and electrocatalysis, among others.
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Affiliation(s)
- Juan I Del Río
- BioEcoUva, Bioeconomy Research Institute, PressTech Group, Department of Chemical Engineering and Environmental Technology, Universidad de Valladolid Prado de La Magdalena S/n 47011 Valladolid Spain +49 40 42878 3962
- Grupo Procesos Químicos Industriales, Department of Chemical Engineering, Universidad de Antioquia UdeA Calle 70 No. 52-21 Medellín 050010 Colombia
| | - Laura Juhász
- Department of Solid State Physics, University of Debrecen Egyetem sqr. 1 H-4032 Debrecen Hungary
| | - József Kalmár
- ELKH-DE Mechanisms of Complex Homogeneous and Heterogeneous Chemical Reactions Research Group, Department of Inorganic and Analytical Chemistry, University of Debrecen Egyetem tér 1. Debrecen H-4032 Hungary
| | - Zoltán Erdélyi
- Department of Solid State Physics, University of Debrecen Egyetem sqr. 1 H-4032 Debrecen Hungary
| | - María D Bermejo
- BioEcoUva, Bioeconomy Research Institute, PressTech Group, Department of Chemical Engineering and Environmental Technology, Universidad de Valladolid Prado de La Magdalena S/n 47011 Valladolid Spain +49 40 42878 3962
| | - Ángel Martín
- BioEcoUva, Bioeconomy Research Institute, PressTech Group, Department of Chemical Engineering and Environmental Technology, Universidad de Valladolid Prado de La Magdalena S/n 47011 Valladolid Spain +49 40 42878 3962
| | - Irina Smirnova
- Institute for Thermal Separation Processes, Hamburg University of Technology Eißendorfer Straße 38 21073 Hamburg Germany
| | - Pavel Gurikov
- Laboratory for Development and Modelling of Novel Nanoporous Materials, Hamburg University of Technology Eißendorfer Straße 38 21073 Hamburg Germany
- aerogel-it GmbH Albert-Einstein-Str. 1 49076 Osnabrück Germany
| | - Baldur Schroeter
- Institute for Thermal Separation Processes, Hamburg University of Technology Eißendorfer Straße 38 21073 Hamburg Germany
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Lv J, Li Z, Dong R, Xue Y, Wang Y, Li Q. Highly flame-retardant materials of different divalent metal ions alginate/silver phosphate: Synthesis, characterizations, and synergistic phosphorus-polymetallic effects. Int J Biol Macromol 2023; 247:125834. [PMID: 37453641 DOI: 10.1016/j.ijbiomac.2023.125834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/01/2023] [Accepted: 07/12/2023] [Indexed: 07/18/2023]
Abstract
Three kinds of divalent metal ions (Ca2+, Cu2+, Zn2+) alginate/silver phosphate (MAlg/Ag3PO4) hybrid materials were prepared via an in-situ method, and the composites were characterized by X-ray diffractometry (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and Fourier transform infrared spectrum (FTIR). To investigate their flame-retardant properties and phosphorus-polymetallic flame-retardant effects, the combustion behavior and flammability of the composites were assessed by using the thermogravimetric analysis (TGA), limiting oxygen index (LOI) and micro-calorimeter tests (MCC). The results show that the three composites were thermally stable, among which the LOI of CaAlg/Ag3PO4, CuAlg/Ag3PO4 and ZnAlg/Ag3PO4 were 62.6 %, 46.5 % and 79.8 %, respectively, which were much higher than the prescribed flame retardants which was 27 %. According to the TGA, the thermal stability was ZnAlg/Ag3PO4 > CaAlg/Ag3PO4 > CuAlg/Ag3PO4. The heat release capacity (HRC) of the above three materials was 49 J/(g·K), 69 J/(g·K), 41 J/(g·K), respectively, and the fire safety performance was also in the same order as the thermal stability. By using the thermogravimetric analysis coupled with Fourier transform infrared analysis (TG-FTIR) and pyrolysis-gas chromatography-mass spectrometry (Py-GC/MS), the flame retarding mechanism of MAlg/Ag3PO4 and the synergistic effect of Ag3PO4 and divalent metal ions were proposed based on the experimental data.
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Affiliation(s)
- Jintai Lv
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China
| | - Zichao Li
- Institute of Biomedical Engineering, College of Life Sciences, Qingdao University, Qingdao 266071, China
| | - Ruitao Dong
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China
| | - Yun Xue
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China
| | - Yanwei Wang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China
| | - Qun Li
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
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Kararsiz G, Duygu YC, Wang Z, Rogowski LW, Park SJ, Kim MJ. Navigation and Control of Motion Modes with Soft Microrobots at Low Reynolds Numbers. MICROMACHINES 2023; 14:1209. [PMID: 37374794 DOI: 10.3390/mi14061209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 05/30/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023]
Abstract
This study investigates the motion characteristics of soft alginate microrobots in complex fluidic environments utilizing wireless magnetic fields for actuation. The aim is to explore the diverse motion modes that arise due to shear forces in viscoelastic fluids by employing snowman-shaped microrobots. Polyacrylamide (PAA), a water-soluble polymer, is used to create a dynamic environment with non-Newtonian fluid properties. Microrobots are fabricated via an extrusion-based microcentrifugal droplet method, successfully demonstrating the feasibility of both wiggling and tumbling motions. Specifically, the wiggling motion primarily results from the interplay between the viscoelastic fluid environment and the microrobots' non-uniform magnetization. Furthermore, it is discovered that the viscoelasticity properties of the fluid influence the motion behavior of the microrobots, leading to non-uniform behavior in complex environments for microrobot swarms. Through velocity analysis, valuable insights into the relationship between applied magnetic fields and motion characteristics are obtained, facilitating a more realistic understanding of surface locomotion for targeted drug delivery purposes while accounting for swarm dynamics and non-uniform behavior.
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Affiliation(s)
- Gokhan Kararsiz
- Department of Mechanical Engineering, Southern Methodist University, Dallas, TX 75275, USA
| | - Yasin Cagatay Duygu
- Department of Mechanical Engineering, Southern Methodist University, Dallas, TX 75275, USA
| | - Zhengguang Wang
- Department of Mechanical Engineering, Southern Methodist University, Dallas, TX 75275, USA
| | - Louis William Rogowski
- Applied Research Associates, Inc. (ARA), 4300 San Mateo Blvd. NE, Suite A-220, Albuquerque, NM 87110, USA
| | - Sung Jea Park
- School of Mechanical Engineering, Korea University of Technology and Education, Cheonan 31253, Chungnam, Republic of Korea
| | - Min Jun Kim
- Department of Mechanical Engineering, Southern Methodist University, Dallas, TX 75275, USA
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Preparation and Mechanism of Bio-Based Sodium Alginate Fibers with Flame Retardant and Antibacterial Properties. Polymers (Basel) 2022; 15:polym15010154. [PMID: 36616504 PMCID: PMC9823456 DOI: 10.3390/polym15010154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/24/2022] [Accepted: 12/26/2022] [Indexed: 12/31/2022] Open
Abstract
Flame retardant and antibacterial sodium alginate (SA) fiber were fabricated using the bio-based flame retardant of phytic acid and DL-arginine successively, and then the morphological structures, combustion behavior, thermal stability, and mechanical as well as antibacterial properties of SA fiber were investigated carefully. It is found that when the additional amount of PADL (reaction products of phytic acid and DL-arginine) in SA composite fiber is 20 wt%, its limiting oxygen index (LOI) is 40.0 ± 0.3%, and UL-94 is V-0 grade. The combustion behavior of composite fiber shows that PADL can effectively reduce combustion heat and promote carbon formation. Its peak of HRR (pkHRR) is 5.9% of pure SA fiber, and the residual carbon increases from 23.0 ± 0.1% to 44.2 ± 0.2%. At the same time, the density of the residual carbon increases gradually. PADL can promote SA to form expanded carbon with increasing density, and isolate the heat and volatilization of combustible gases. The guanidine group of DL-arginine can interact with the cell membrane to kill bacteria, and the antibacterial property of SA composite fiber is increased by 30%. This study provides a very ecological, safe, environmentally friendly and simple method to prepare flame retardant and antibacterial SA composite fiber with bio-based materials.
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Zhou H, Yang N, Hou J, Yu C, Jin Z, Zeng P, Yang L, Fu Y, Shen Y, Guo S. Effects of CaCl2, HCl, acetic acid or citric acid on dynamic mechanical performances and physicochemical properties of sodium alginate edible films. Food Packag Shelf Life 2022. [DOI: 10.1016/j.fpsl.2022.100935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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García-Briega MI, Ródenas-Rochina J, Martins LA, Lanceros-Méndez S, Gallego Ferrer G, Sempere A, Gómez Ribelles JL. Stability of Biomimetically Functionalised Alginate Microspheres as 3D Support in Cell Cultures. Polymers (Basel) 2022; 14:polym14204282. [PMID: 36297867 PMCID: PMC9611185 DOI: 10.3390/polym14204282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/04/2022] [Accepted: 10/05/2022] [Indexed: 11/29/2022] Open
Abstract
Alginate hydrogels can be used to develop a three-dimensional environment in which various cell types can be grown. Cross-linking the alginate chains using reversible ionic bonds opens up great possibilities for the encapsulation and subsequent release of cells or drugs. However, alginate also has a drawback in that its structure is not very stable in a culture medium with cellular activity. This work explored the stability of alginate microspheres functionalised by grafting specific biomolecules onto their surface to form microgels in which biomimetic microspheres surrounded the cells in the culture, reproducing the natural microenvironment. A study was made of the stability of the microgel in different typical culture media and the formation of polyelectrolyte multilayers containing polylysine and heparin. Multiple myeloma cell proliferation in the culture was tested in a bioreactor under gentle agitation.
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Affiliation(s)
- María Inmaculada García-Briega
- Centre for Biomaterials and Tissue Engineering (CBIT) Universitat Politècnica de València, 46022 Valencia, Spain
- Biomedical Research Networking Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 46022 Valencia, Spain
| | - Joaquín Ródenas-Rochina
- Centre for Biomaterials and Tissue Engineering (CBIT) Universitat Politècnica de València, 46022 Valencia, Spain
| | - Luis Amaro Martins
- Centre for Biomaterials and Tissue Engineering (CBIT) Universitat Politècnica de València, 46022 Valencia, Spain
| | - Senentxu Lanceros-Méndez
- Centre of Physics, Universidade Do Minho, 4710-057 Braga, Portugal
- BCMaterials, Basque Centre for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
| | - Gloria Gallego Ferrer
- Centre for Biomaterials and Tissue Engineering (CBIT) Universitat Politècnica de València, 46022 Valencia, Spain
- Biomedical Research Networking Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 46022 Valencia, Spain
| | - Amparo Sempere
- Grupo de Investigación en Hematología, Instituto de Investigación Sanitaria La Fe (IISLAFE), 46026 Valencia, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Instituto Carlos III, 28029 Madrid, Spain
| | - José Luís Gómez Ribelles
- Centre for Biomaterials and Tissue Engineering (CBIT) Universitat Politècnica de València, 46022 Valencia, Spain
- Biomedical Research Networking Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 46022 Valencia, Spain
- Correspondence:
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Amoxicillin Encapsulation on Alginate/Magnetite Composite and Its Antimicrobial Properties Against Gram-Negative and Positive Microbes. BIONANOSCIENCE 2022. [DOI: 10.1007/s12668-022-01038-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2022]
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11
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Kundu CK, Hossen MT, Islam T, Mollick S, Song L, Hu Y. Flame Retardant Coatings from Bio-Derived Chitosan, Sodium Alginate, and Metal Salts for Polyamide 66 Textiles. ACS OMEGA 2022; 7:30841-30848. [PMID: 36092629 PMCID: PMC9453786 DOI: 10.1021/acsomega.2c02466] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 08/15/2022] [Indexed: 06/15/2023]
Abstract
Bio-derived polysaccharides, namely, chitosan (CS) and sodium alginate (SA) were considered in a layer-by-layer (LbL) deposition to construct flame retardant coatings onto the polyamide 66 (PA66) fabric surfaces. The as-prepared coatings were further modified in the impregnation process with a number of inorganic salts containing boron, nickel, and iron elements. Obtained results revealed that the simultaneously LbL-assembled and metal salt-treated fabric samples exhibited superior flame retardant performance compared to the only LbL-deposited fabric samples. The limiting oxygen index (LOI) value reached up to 25.5% of the CS-SA-iron salt treated fabric sample and the dripping tendency was completely diminished only for the LbL-metal salt modified fabric samples. Among the treated fabric samples, the CS-SA-iron-salt-modified fabric sample exhibited a maximum reduction in the peak heat release rate by 34% and handed improved and higher quality char residues, indicating a possible condensed phase flame retardant mechanism of this applied finishing. Moreover, metal salt-induced cross-linking could enhance the coating stability and durable finishes against regular home laundering where an iron-salt-treated fabric sample could retain anti-dripping properties even up to 10 laundering cycles. Thus, this pairing of bio-macromolecules (i.e., charring agent) with the metal salts in a hybrid system showed efficacy in improving the fire performance of polyamide textiles via the synergistic involvement between them.
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Affiliation(s)
- Chanchal Kumar Kundu
- Department
of Textile Engineering, Jashore University
of Science and Technology, Jashore 7408, Bangladesh
- State
Key Laboratory of Fire Science, University
of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Md. Tanvir Hossen
- Department
of Textile Engineering, Jashore University
of Science and Technology, Jashore 7408, Bangladesh
| | - Tarikul Islam
- Department
of Textile Engineering, Jashore University
of Science and Technology, Jashore 7408, Bangladesh
| | - Swaraz Mollick
- Department
of Textile Engineering, Jashore University
of Science and Technology, Jashore 7408, Bangladesh
| | - Lei Song
- State
Key Laboratory of Fire Science, University
of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Yuan Hu
- State
Key Laboratory of Fire Science, University
of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
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Zhang R, Richardson JJ, Masters AF, Maschmeyer T. Removal of Pb 2+ from Water Using Sustainable Brown Seaweed Phlorotannins. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:8324-8333. [PMID: 35758845 DOI: 10.1021/acs.langmuir.2c00849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Bioadsorption is a promising technology to sequester heavy metal ions from water, and brown seaweed has been identified as one of the most appropriate adsorbents as it is abundant, low cost, and efficient at removing various metal ion contaminations. The ability to remove heavy metals from water arises from the high concentration of polysaccharides and phlorotannins in brown seaweed; however, remediation can be hampered by the salinity, location, and coexistence of pollutants in the contaminated water. Maintaining the adsorbent properties of brown seaweed while avoiding the fragility of living organisms could allow for the development of better adsorbents. Herein, we demonstrate that polymerized phlorotannin particles, synthesized from phlorotannins extracted from a species of brown seaweed (Carpophyllum flexuosum), were able to remove 460 mg of Pb2+ from water per gram of adsorbent. Scanning electron microscopy (SEM), attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FTIR), and thermogravimetric analysis (TGA) were used to characterize the polymerization process and the polymerized phlorotannin particles. Importantly, there was no direct correlation between the Pb2+ removal capacity and the phlorotannin content of various algal derivatives of three species of brown seaweed, C. flexuosum, Carpophyllum plumosum, and Ecklonia radiata, as all three had similar adsorption capacities despite differences in phlorotannin content. This work shows that naturally abundant, "green" materials can be used to help remediate the environment.
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Affiliation(s)
- Rui Zhang
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, Zhejiang Province, China
| | - Joseph J Richardson
- Department of Materials Engineering, School of Engineering, University of Tokyo, Tokyo 113-8656, Japan
| | - Anthony F Masters
- Laboratory of Advanced Catalysis for Sustainability, School of Chemistry F11, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Thomas Maschmeyer
- Laboratory of Advanced Catalysis for Sustainability, School of Chemistry F11, The University of Sydney, Sydney, New South Wales 2006, Australia
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13
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Liu C, Li P, Xu YJ, Liu Y, Zhu P, Wang YZ. Bio‐based nickel alginate toward improving fire safety and mechanical properties of epoxy resin. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.109945] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Understanding of vibrational and thermal behavior of bio-based doped alginate@nickel cross-linked beads: A combined experimental and theoretical study. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131524] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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15
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Comparison of green bio-based cerium/alginate vs. copper/alginate beads: a study of vibrational and thermal properties using experimental and theoretical methods. J Mol Model 2022; 28:37. [PMID: 35034209 DOI: 10.1007/s00894-022-05028-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 01/05/2022] [Indexed: 10/19/2022]
Abstract
Herein, bio-based alginates (Alg) containing metallic beads (Ce and Cu) were synthesized via an alginate cross-linking method, and their properties were studied using experimental techniques combined with theoretical simulations. Materials were characterized through Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and scanning electron microscope (SEM) images, to determine the cross-linking structural features, thermal stability, and surface morphology of alginates. Besides, density functional theory (DFT) methods were employed to calculate global reactivity parameters such as HOMO-LUMO gap energies (ΔEH-L), electronegativity (χ), hardness (η), and electrophilic and nucleophilic indicators, using both gas and aqueous media for the study of the complexation process. Among other features, characterization of the thermal properties showed that Alg@Ce and Alg@Cu alginate beads behave differently as a function of the temperature. This behavior was also predicted by the conformation energy differences between Alg@Ce and Alg@Cu, which were found out theoretically and explained with the combined study of the vibrational modes between the carboxylate group with either Ce or Cu. Overall, the reactivity of the Alg@Ce alginate bead was higher than that of the Alg@Cu counterpart, results could be used as a cornerstone to employed the materials here studied in a wide range of applications.
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16
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Ping G, Miao L, Awati A, Qian X, Shi T, Lv Y, Liu Y, Gan L, Liu M, Zhu D. Porous carbon globules with moss-like surfaces from semi-biomass interpenetrating polymer network for efficient charge storage. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.04.055] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Eun S, Ryu J, Kim H, Hong HJ, Kim S. Simultaneous removal of radioactive cesium and strontium from seawater using a highly efficient Prussian blue-embedded alginate aerogel. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 297:113389. [PMID: 34325366 DOI: 10.1016/j.jenvman.2021.113389] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/07/2021] [Accepted: 07/24/2021] [Indexed: 06/13/2023]
Abstract
Radioactive cesium (137Cs) and strontium (90Sr) contaminants in seawater have been a serious problem since the Fukushima accident in 2011 due to their long-term health risks. For the effective and simultaneous removal of radioactive cesium (137Cs) and strontium (90Sr) from seawater, a Prussian blue (PB)-immobilized alginate aerogel (PB-alginate aerogel) was fabricated and its adsorption performance was evaluated. PB nanoparticles were homogeneously dispersed in the three-dimensional porous alginate aerogel matrix, which enabled facile contact with seawater. The PB-alginate aerogel exhibited Cs+ and Sr2+ adsorption capacities of 19.88 and 20.10 mg/g, respectively, without substantial interference because Cs+ and Sr2+ adsorption occurred at different adsorption sites on the composite. The Cs+ and Sr2+ adsorption onto the PB-alginate aerogel was completed within 3 h due to the highly porous morphology of the aerogel. The Cs+ and Sr2+ adsorption behaviors on the PB-alginate aerogel were systematically investigated under various conditions. Compared with Cs+ adsorption, Sr2+ adsorption onto the PB-alginate aerogel was more strongly influenced by competing cations (Na+, Mg2+, Ca2+, and K+) in seawater. 137Cs and 90Sr removal tests in real seawater demonstrated the practical feasibility of the PB-alginate aerogel as an adsorbent.
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Affiliation(s)
- Semin Eun
- Division of Energy Technology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea
| | - Jungho Ryu
- Geologic Environment Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, 34132, Republic of Korea
| | - Hyuncheol Kim
- Nuclear Emergency and Environmental Protection Division, Korea Atomic Energy Research Institute (KAERI), Daejeon, 34057, Republic of Korea; Radiochemistry and Nuclear Nonproliferation, University of Science and Technology, 217, Gajeong-ro, Yuseong-gu, Daejeon, 34113, Republic of Korea
| | - Hye-Jin Hong
- Department of Environmental Engineering, Chungbuk National University, Cheongju, Chungbuk, 28644, Republic of Korea.
| | - Soonhyun Kim
- Division of Energy Technology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea; Department of Interdisciplinary Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea.
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18
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Il Kim M, Park CY, Seo JM, Kang KS, Park KS, Kang J, Hong KS, Choi Y, Lee SY, Park JP, Park HG, Park TJ. In Situ Biosynthesis of a Metal Nanoparticle Encapsulated in Alginate Gel for Imageable Drug-Delivery System. ACS APPLIED MATERIALS & INTERFACES 2021; 13:36697-36708. [PMID: 34313117 DOI: 10.1021/acsami.1c02286] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Development of drug-delivery systems that allow simultaneous in vivo imaging has gained much interest. We report a novel strategy to encapsulate metal nanoparticles (NPs) within alginate gel for in vivo imaging. The cell lysate of recombinant Escherichia coli strain, expressing Arabidopsis thaliana phytochelatin synthase and Pseudomonas putida metallothionein genes, was encapsulated within the alginate gel. Incubation of alginate gel with metal ion precursors followed by UV irradiation resulted in the synthesis of high concentrations of metal NPs, such as Au, Ag, CdSe, and EuSe NPs, within the gel. The alginate gel with metal NPs was used as a drug-delivery system by further co-encapsulating doxorubicin and rifampicin, the release of which was made to be pH-dependent. This system can be conveniently and safely used for in vitro and in vivo bioimaging, enabled by the metal NPs formed within the gel matrix without using toxic reducing reagents or surfactants.
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Affiliation(s)
- Moon Il Kim
- Department of Chemical and Biomolecular Engineering (BK21+ Program), KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
- Department of BioNano Technology, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam, Gyeonggi-do 13120, Republic of Korea
| | - Chan Yeong Park
- Department of Chemistry, Research Institute of Chem-Bio Diagnostic Technology, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea
| | - Ji Min Seo
- Department of Chemistry, Research Institute of Chem-Bio Diagnostic Technology, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea
| | - Kyoung Suk Kang
- Department of Chemical and Biomolecular Engineering (BK21+ Program), KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Ki Soo Park
- Department of Biological Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Jongeun Kang
- Bioimaging Research Team, Korea Basic Science Institute, 162 Yeongudanji-ro, Ochang-eup, Cheongju, Chungcheongbuk-do 28119, Republic of Korea
- Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Kwan Soo Hong
- Bioimaging Research Team, Korea Basic Science Institute, 162 Yeongudanji-ro, Ochang-eup, Cheongju, Chungcheongbuk-do 28119, Republic of Korea
- Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Yoojin Choi
- Department of Chemical and Biomolecular Engineering (BK21+ Program), KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Sang Yup Lee
- Department of Chemical and Biomolecular Engineering (BK21+ Program), KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Jong Pil Park
- Department of Food Science and Biotechnology, School of Food Science and Technology, Chung-Ang University, 4726 Seodong-daero, Anseong 17546, Republic of Korea
| | - Hyun Gyu Park
- Department of Chemical and Biomolecular Engineering (BK21+ Program), KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Tae Jung Park
- Department of Chemistry, Research Institute of Chem-Bio Diagnostic Technology, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea
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19
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Chen Z, Song J, Xia Y, Jiang Y, Murillo LL, Tsigkou O, Wang T, Li Y. High strength and strain alginate fibers by a novel wheel spinning technique for knitting stretchable and biocompatible wound-care materials. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 127:112204. [PMID: 34225856 DOI: 10.1016/j.msec.2021.112204] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/27/2021] [Accepted: 05/18/2021] [Indexed: 02/07/2023]
Abstract
Alginate fibrous materials have been applied as wound dressing to enhance wound healing due to its nontoxic, biodegradable, and hemostatic nature. Conventional nonwoven fabrication tactics, however, showed weakness in inflammation, degradation stability and mechanical properties. Herein, the wet-spun alginate fibers were prepared by a novel wheel spinning technique, then knitted into wound dressing. Benefiting from optimized wet spinning parameters and the agglomeration of alginate multimers, the fibers were endowed with elevated mechanical performances and biodegradability, which allowed for the feasibility of knitting wound-care materials. Using the new wheel spinning technique, high strength alginate fibers with 173 MPa were produced with breaking strain up to 18% and toughness of 16.16 MJ*m-3. Meanwhile, alginate fibers with high breaking strain reaching 35% were produced with tensile strength of 135 MPa and toughness of 37.47 MJ*m-3. The overall mechanical performances of these alginate fibers with high breaking strain are significantly higher (up to 2 times) than those published in the literature in term of toughness. In vitro degradation evaluation revealed that this wet spun fibrous dressing had good aqueous absorbency (50%) and sustained biodegradation properties. Furthermore, the consequent cell viability study also proved that this alginate knitted fabric is biocompatible for being applied as wound dressing.
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Affiliation(s)
- Zhongda Chen
- Department of Materials, The University of Manchester, Manchester M13 9PL, UK
| | - Jun Song
- Department of Materials, The University of Manchester, Manchester M13 9PL, UK
| | - Yumin Xia
- Department of Materials, The University of Manchester, Manchester M13 9PL, UK
| | - Yuwei Jiang
- Department of Materials, The University of Manchester, Manchester M13 9PL, UK
| | - Luis Larrea Murillo
- Division of Evolution and Genomic Sciences, The University of Manchester, Manchester M13 9PL, UK
| | - Olga Tsigkou
- Department of Materials, The University of Manchester, Manchester M13 9PL, UK
| | - Tao Wang
- Division of Evolution and Genomic Sciences, The University of Manchester, Manchester M13 9PL, UK
| | - Yi Li
- Department of Materials, The University of Manchester, Manchester M13 9PL, UK.
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20
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Xu YJ, Qu LY, Liu Y, Zhu P. An overview of alginates as flame-retardant materials: Pyrolysis behaviors, flame retardancy, and applications. Carbohydr Polym 2021; 260:117827. [DOI: 10.1016/j.carbpol.2021.117827] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 02/11/2021] [Accepted: 02/12/2021] [Indexed: 12/15/2022]
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21
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Zhang X, Zhang Q, Xue Y, Wang Y, Zhou X, Li Z, Li Q. Simple and green synthesis of calcium alginate/AgCl nanocomposites with low-smoke flame-retardant and antimicrobial properties. CELLULOSE (LONDON, ENGLAND) 2021; 28:5151-5167. [PMID: 33776253 PMCID: PMC7982765 DOI: 10.1007/s10570-021-03825-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 03/09/2021] [Indexed: 05/23/2023]
Abstract
Fire hazards and infectious diseases result in great threats to public safety and human health, thus developing multi-functional materials to deal with these issues is critical and yet has remained challenging to date. In this work, we report a facile and eco-friendly synthetic approach for the preparation of calcium alginate/silver chloride (CA/AgCl) nanocomposites with dual functions of excellent flame-retardant and antibacterial activity. Multi characterization techniques and antibacterial assays were performed to investigate the flame-retardant and antibacterial properties of the CA/AgCl nanocomposites. The obtained results show that the CA/AgCl nanocomposites exhibited much higher limiting oxygen index value (> 60%) than that of CA (48%) with a UL-94 rating of V-0. Moreover, CA/AgCl particularly displayed an efficiently smoke-suppressive feature by achieving a total smoke release value of 2.7 m2/m2, which was reduced by 91%, compared to CA. The antibacterial rates of the CA/AgCl nanocomposites against E. coli and S. aureus were measured to be 99.67% and 99.77%, respectively, while CA showed quite weak antibacterial rates. In addition, the flame-retardant and antibacterial mechanisms were analyzed and proposed based on the experimental data. This study provides a novel nanocomposite material with both flame-retardant and antibacterial properties which show promising application prospects in the fields of decorative materials and textile industry.
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Affiliation(s)
- Xin Zhang
- College of Chemistry and Chemical Engineering, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Qingdao University, Qingdao, 266071 China
| | - Qing Zhang
- College of Chemistry and Chemical Engineering, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Qingdao University, Qingdao, 266071 China
| | - Yun Xue
- College of Chemistry and Chemical Engineering, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Qingdao University, Qingdao, 266071 China
| | - Yanwei Wang
- College of Chemistry and Chemical Engineering, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Qingdao University, Qingdao, 266071 China
| | - Xiaodong Zhou
- College of Chemistry and Chemical Engineering, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Qingdao University, Qingdao, 266071 China
| | - Zichao Li
- Institute of Biomedical Engineering, College of Life Sciences, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao, 266071 China
| | - Qun Li
- College of Chemistry and Chemical Engineering, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Qingdao University, Qingdao, 266071 China
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22
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Goikuria U, Larrañaga A, Lizundia E, Vilas JL. Effect of metal‐oxide nanoparticle presence and alginate cross‐linking on cellulose nanocrystal‐based aerogels. J Appl Polym Sci 2021. [DOI: 10.1002/app.50639] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Uribarri Goikuria
- Macromolecular Chemistry Research Group (LABQUIMAC), Department of Physical Chemistry, Faculty of Science and Technology University of the Basque Country (UPV/EHU) Leioa Spain
| | - Aitor Larrañaga
- SGIker, General Research Services University of the Basque Country (UPV/EHU) Leioa Spain
| | - Erlantz Lizundia
- Department of Graphic Design and Engineering Projects, Bilbao Faculty of Engineering University of the Basque Country (UPV/EHU) Bilbao Spain
- BCMaterials, Basque Center for Materials, Applications and Nanostructures UPV/EHU Science Park Leioa Spain
| | - José Luis Vilas
- Macromolecular Chemistry Research Group (LABQUIMAC), Department of Physical Chemistry, Faculty of Science and Technology University of the Basque Country (UPV/EHU) Leioa Spain
- BCMaterials, Basque Center for Materials, Applications and Nanostructures UPV/EHU Science Park Leioa Spain
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23
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Córdova BM, Infantas GC, Mayta S, Huamani-Palomino RG, Kock FVC, Montes de Oca J, Valderrama AC. Xanthate-modified alginates for the removal of Pb(II) and Ni(II) from aqueous solutions: A brief analysis of alginate xanthation. Int J Biol Macromol 2021; 179:557-566. [PMID: 33652050 DOI: 10.1016/j.ijbiomac.2021.02.190] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 02/21/2021] [Accepted: 02/25/2021] [Indexed: 11/30/2022]
Abstract
Mining is the most common activity that introduces heavy metal ions into aquatic ecosystems, especially in low income-developing nations where governments are implementing stricter regulations for industrial wastewater. In this context, this work is focused on the application of xanthate-modified alginates for the removal of Pb(II) and Ni(II) from aqueous solutions. In order to confirm the presence of xanthate groups alongside alginate chains, characterization by second-derivative FT-IR was carried out and significance evidence attributed to xanthate groups was found at around 1062-1079 cm-1, 829-845 cm-1 and 620-602 cm-1. In addition to this, thermogravimetric analysis and differential scanning calorimetry were employed to explore thermal properties of modified alginates. According to these results, enthalpy changes (∆H) characteristic of dehydration and collapse of biopolymeric structure were estimated as +11.41 J/g and -6.83 J/g, respectively. Furthermore, the presence of S element was confirmed by EDS mapping technique, whereas FESEM image showed a cracked and homogeneous surface distribution. On the other hand, the effect of important parameters such as pH, dosage, initial concentration as well as Langmuir and Freundlich isotherm were deeply discussed. Finally, rheological measurements were performed aiming to investigate the gel-like viscoelastic features associated to nickel xanthate compound.
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Affiliation(s)
- Bryan M Córdova
- Laboratorio de Investigación en Biopolímeros y Metalofármacos, Facultad de Ciencias, Escuela Profesional de Química, Universidad Nacional de Ingeniería, Av. Túpac Amaru 210, Lima 25, Peru.
| | - Gian C Infantas
- Universidad Nacional de Ingeniería, Av. Túpac Amaru 210, Lima 25, Peru
| | - Sergio Mayta
- Universidad Nacional de Ingeniería, Av. Túpac Amaru 210, Lima 25, Peru
| | - Ronny G Huamani-Palomino
- Laboratorio de Investigación en Biopolímeros y Metalofármacos, Facultad de Ciencias, Escuela Profesional de Química, Universidad Nacional de Ingeniería, Av. Túpac Amaru 210, Lima 25, Peru
| | - Flavio Vinicius C Kock
- Laboratory of Nuclear Magnetic Resonance, Department of Chemistry, Federal University of São Carlos, São Carlos, Brazil
| | - Juan Montes de Oca
- Center for the Development of Advanced Materials and Nanotechnology, National University of Engineering, Av. Túpac Amaru 210, Lima 25, Peru
| | - A C Valderrama
- Laboratorio de Investigación en Biopolímeros y Metalofármacos, Facultad de Ciencias, Escuela Profesional de Química, Universidad Nacional de Ingeniería, Av. Túpac Amaru 210, Lima 25, Peru.
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24
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Liu W, Shi R, Zhang Z, Ge X, Li P, Chen X. Facile Strategy to Fabricate the Flame Retardant Polyamide 66 Fabric Modified with an Inorganic-Organic Hybrid Structure. ACS APPLIED MATERIALS & INTERFACES 2021; 13:9122-9133. [PMID: 33591163 DOI: 10.1021/acsami.0c17778] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Recently, traditional flame retardant finishing with a single metal compound has been rarely applied owing to its low effectiveness and durability. This study reports metal ion finishing in combination with surface photografting modification (M/P technology) as a novel approach to incorporate an inorganic-organic hybrid structure containing an Fe3+ ion onto the surface of the polyamide (PA) 66 fabric. Specifically, the PA fabric was first surface-modified in the presence of acrylic acid (AA) and N,N'-methylene bisacrylamide (MBAAn) during photografting pretreatment under UV irradiation (step I), then further reacted with the Fe3+ ion in the metal ion finishing (step II). After treatment with M/P technology, the fabric exhibits the required excellent flame retardancy and dripping resistance. Here, flame retardant tests show that the treated PA fabric has the highest limiting oxygen index (LOI) value of 33.4 and no melt dripping during combustion. An interesting inorganic/organic composite thermal barrier consisting of an inorganic iron oxide nanoparticle (NP) outer layer and an organic micro-intumescent inner layer can be observed on the surface of the burnt fabric. This structure could be responsible for the significant enhancement in the fire performance of the treated fabric. Importantly, the treated fabric is also highly stable during the laundering procedure, which could retain a high Fe/C ratio and an acceptable LOI value of 27.8 after washing 45 times. This confirms the achievement of durable flame retardancy after treatment with M/P technology, and its possible interaction mechanism has been discussed here.
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Affiliation(s)
- Wei Liu
- Sichuan Fire Science and Technology Research Institute of Ministry of Emergency Management, Chengdu 610036, China
| | - Rui Shi
- Sichuan Fire Science and Technology Research Institute of Ministry of Emergency Management, Chengdu 610036, China
- College of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
| | - Zejiang Zhang
- Sichuan Fire Science and Technology Research Institute of Ministry of Emergency Management, Chengdu 610036, China
| | - Xinguo Ge
- Sichuan Fire Science and Technology Research Institute of Ministry of Emergency Management, Chengdu 610036, China
| | - Pingli Li
- Sichuan Fire Science and Technology Research Institute of Ministry of Emergency Management, Chengdu 610036, China
| | - Xiaosui Chen
- College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, China
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25
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Vincent T, Vincent C, Dumazert L, Otazaghine B, Sonnier R, Guibal E. Fire behavior of innovative alginate foams. Carbohydr Polym 2020; 250:116910. [PMID: 33049885 DOI: 10.1016/j.carbpol.2020.116910] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 07/28/2020] [Accepted: 08/04/2020] [Indexed: 12/23/2022]
Abstract
A new biosourced composite foam (AF, associating foamed alginate matrix and orange peel filler) is successfully tested for fire-retardant properties. This material having similar thermal insulating properties and density than fire-retardant polyurethane foam (FR-PUF, a commercial product) shows promising enhanced properties for flame retardancy, as assessed by different methods such as thermogravimetric analysis (TGA), pyrolysis combustion flow calorimetry (PCFC) and a newly designed apparatus called RAPACES for investigating large-scale samples. All these methods confirm the promising properties of this alternative material in terms of fire protection (pHRR, THR, EHC, time-to-ignition, flame duration or production of residue), especially for heat flux not exceeding 50 kW m-2. At higher heat flux (i.e., 75 kW m-2), flame retardant properties tend to decrease but maintain at a higher level than FR-PUF. The investigation of the effect of AF thickness shows that the critical thickness (CT) is close to 1.5-1.7 cm: heat diffusion and material combustion are limited to the CT layer that protects the underlying layers from combustion. A multiplicity of factors can explain this behavior, such as: (a) negligible heat conduction, (b) low heat of combustion, (c) charring formation, and (d) water release. Water being released from underlying layers, dilutes the gases emitted during the combustion of superficial layers and promotes the flame extinction.
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Affiliation(s)
- Thierry Vincent
- IMT - Mines Ales, Polymers Hybrids and Composites (PCH), 6 Avenue De Clavières, F-30319 Alès Cedex, France
| | - Chloë Vincent
- IMT - Mines Ales, Polymers Hybrids and Composites (PCH), 6 Avenue De Clavières, F-30319 Alès Cedex, France
| | - Loïc Dumazert
- IMT - Mines Ales, Polymers Hybrids and Composites (PCH), 6 Avenue De Clavières, F-30319 Alès Cedex, France
| | - Belkacem Otazaghine
- IMT - Mines Ales, Polymers Hybrids and Composites (PCH), 6 Avenue De Clavières, F-30319 Alès Cedex, France
| | - Rodolphe Sonnier
- IMT - Mines Ales, Polymers Hybrids and Composites (PCH), 6 Avenue De Clavières, F-30319 Alès Cedex, France
| | - Eric Guibal
- IMT - Mines Ales, Polymers Hybrids and Composites (PCH), 6 Avenue De Clavières, F-30319 Alès Cedex, France.
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26
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Liudvinaviciute D, Rutkaite R, Bendoraitiene J, Klimaviciute R, Dagys L. Formation and characteristics of alginate and anthocyanin complexes. Int J Biol Macromol 2020; 164:726-734. [DOI: 10.1016/j.ijbiomac.2020.07.157] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 07/14/2020] [Accepted: 07/14/2020] [Indexed: 12/01/2022]
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27
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Zhang Q, Zhang X, Cheng W, Li Z, Li Q. In situ-synthesis of calcium alginate nano-silver phosphate hybrid material with high flame retardant and antibacterial properties. Int J Biol Macromol 2020; 165:1615-1625. [DOI: 10.1016/j.ijbiomac.2020.10.085] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 10/07/2020] [Accepted: 10/12/2020] [Indexed: 01/22/2023]
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28
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Yoncheva K, Tzankov B, Yordanov Y, Spassova I, Kovacheva D, Frosini M, Valoti M, Tzankova V. Encapsulation of doxorubicin in chitosan-alginate nanoparticles improves its stability and cytotoxicity in resistant lymphoma L5178 MDR cells. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101870] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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29
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Kabir II, Sorrell CC, Mofarah SS, Yang W, Yuen ACY, Nazir MT, Yeoh GH. Alginate/Polymer-Based Materials for Fire Retardancy: Synthesis, Structure, Properties, and Applications. POLYM REV 2020. [DOI: 10.1080/15583724.2020.1801726] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Imrana I. Kabir
- School of Mechanical and Manufacturing Engineering, UNSW Sydney, Sydney, NSW, Australia
| | - Charles C. Sorrell
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW, Australia
| | - Sajjad S. Mofarah
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW, Australia
| | - Wei Yang
- School of Mechanical and Manufacturing Engineering, UNSW Sydney, Sydney, NSW, Australia
| | - Anthony Chun Yin Yuen
- School of Mechanical and Manufacturing Engineering, UNSW Sydney, Sydney, NSW, Australia
| | - Muhammad Tariq Nazir
- School of Mechanical and Manufacturing Engineering, UNSW Sydney, Sydney, NSW, Australia
| | - Guan Heng Yeoh
- School of Mechanical and Manufacturing Engineering, UNSW Sydney, Sydney, NSW, Australia
- Australian Nuclear Science and Technology Organization (ANSTO), Lucas Heights, NSW, Australia
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30
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Javanbakht V, Shafiei R. Preparation and performance of alginate/basil seed mucilage biocomposite for removal of eriochrome black T dye from aqueous solution. Int J Biol Macromol 2020; 152:990-1001. [DOI: 10.1016/j.ijbiomac.2019.10.185] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 10/13/2019] [Accepted: 10/22/2019] [Indexed: 02/06/2023]
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31
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Biomolecules as Flame Retardant Additives for Polymers: A Review. Polymers (Basel) 2020; 12:polym12040849. [PMID: 32272648 PMCID: PMC7240707 DOI: 10.3390/polym12040849] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/23/2020] [Accepted: 03/24/2020] [Indexed: 12/02/2022] Open
Abstract
Biological molecules can be obtained from natural sources or from commercial waste streams and can serve as effective feedstocks for a wide range of polymer products. From foams to epoxies and composites to bulk plastics, biomolecules show processability, thermal stability, and mechanical adaptations to fulfill current material requirements. This paper summarizes the known bio-sourced (or bio-derived), environmentally safe, thermo-oxidative, and flame retardant (BEST-FR) additives from animal tissues, plant fibers, food waste, and other natural resources. The flammability, flame retardance, and—where available—effects on polymer matrix’s mechanical properties of these materials will be presented. Their method of incorporation into the matrix, and the matrices for which the BEST-FR should be applicable will also be made known if reported. Lastly, a review on terminology and testing methodology is provided with comments on future developments in the field.
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Xu S, Li SY, Zhang M, Zeng HY, Wu K, Tian XY, Chen CR, Pan Y. Fabrication of green alginate-based and layered double hydroxides flame retardant for enhancing the fire retardancy properties of polypropylene. Carbohydr Polym 2020; 234:115891. [DOI: 10.1016/j.carbpol.2020.115891] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 01/16/2020] [Accepted: 01/17/2020] [Indexed: 12/14/2022]
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33
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Microwave-mediated synthesis of silver nanoparticles on various metal-alginate composites: evaluation of catalytic activity and thermal stability of the composites in solvent-free acylation reaction of amine and alcohols. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2089-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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34
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Padil VVT, Wacławek S, Černík M, Varma RS. Tree gum-based renewable materials: Sustainable applications in nanotechnology, biomedical and environmental fields. Biotechnol Adv 2018; 36:1984-2016. [PMID: 30165173 PMCID: PMC6209323 DOI: 10.1016/j.biotechadv.2018.08.008] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 07/22/2018] [Accepted: 08/24/2018] [Indexed: 12/22/2022]
Abstract
The prospective uses of tree gum polysaccharides and their nanostructures in various aspects of food, water, energy, biotechnology, environment and medicine industries, have garnered a great deal of attention recently. In addition to extensive applications of tree gums in food, there are substantial non-food applications of these commercial gums, which have gained widespread attention due to their availability, structural diversity and remarkable properties as 'green' bio-based renewable materials. Tree gums are obtainable as natural polysaccharides from various tree genera possessing exceptional properties, including their renewable, biocompatible, biodegradable, and non-toxic nature and their ability to undergo easy chemical modifications. This review focuses on non-food applications of several important commercially available gums (arabic, karaya, tragacanth, ghatti and kondagogu) for the greener synthesis and stabilization of metal/metal oxide NPs, production of electrospun fibers, environmental bioremediation, bio-catalysis, biosensors, coordination complexes of metal-hydrogels, and for antimicrobial and biomedical applications. Furthermore, polysaccharides acquired from botanical, seaweed, animal, and microbial origins are briefly compared with the characteristics of tree gum exudates.
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Affiliation(s)
- Vinod V T Padil
- Department of Nanomaterials in Natural Sciences, Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentská 1402/2, Liberec 1 461 17, Czech Republic.
| | - Stanisław Wacławek
- Department of Nanomaterials in Natural Sciences, Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentská 1402/2, Liberec 1 461 17, Czech Republic
| | - Miroslav Černík
- Department of Nanomaterials in Natural Sciences, Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentská 1402/2, Liberec 1 461 17, Czech Republic.
| | - Rajender S Varma
- Water Resource Recovery Branch, Water Systems Division, National Risk Management Research Laboratory, U.S. Environmental Protection Agency, 26 West Martin Luther King Drive, MS 483, Cincinnati, Ohio 45268, USA; Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University in Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic.
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35
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Thong YJ, Beh JH, Lai JC, Lim TH. Synthesis and Characterization of Alginate-Based Sol–Gel Synthesis of Lithium Nickel Phosphate with Surface Area Control. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b03468] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ying Jie Thong
- Department of Physical Science, Faculty of Applied Sciences, Tunku Abdul Rahman University College, Jalan Genting Kelang, Setapak, Kuala Lumpur 53300, Malaysia
| | - Jeng Hua Beh
- Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Malaysia
| | - Jau Choy Lai
- Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Malaysia
| | - Teck Hock Lim
- Department of Physical Science, Faculty of Applied Sciences, Tunku Abdul Rahman University College, Jalan Genting Kelang, Setapak, Kuala Lumpur 53300, Malaysia
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36
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Fire-retardant multilayer assembled on polyester fabric from water-soluble chitosan, sodium alginate and divalent metal ion. Int J Biol Macromol 2018; 119:1083-1089. [DOI: 10.1016/j.ijbiomac.2018.08.043] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 08/08/2018] [Accepted: 08/08/2018] [Indexed: 11/17/2022]
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37
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Vincent T, Dumazert L, Dufourg L, Cucherat C, Sonnier R, Guibal E. New alginate foams: Box-Behnken design of their manufacturing; fire retardant and thermal insulating properties. J Appl Polym Sci 2017. [DOI: 10.1002/app.45868] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Thierry Vincent
- Ecole des Mines d'Alès; Centre des Matériaux des Mines d'Alès; MPA, 6 Avenue de Clavières, Alès Cedex F-30319 France
| | - Loïc Dumazert
- Ecole des Mines d'Alès; Centre des Matériaux des Mines d'Alès; MPA, 6 Avenue de Clavières, Alès Cedex F-30319 France
| | - Ludivine Dufourg
- Ecole des Mines d'Alès; Centre des Matériaux des Mines d'Alès; MPA, 6 Avenue de Clavières, Alès Cedex F-30319 France
| | - Claire Cucherat
- Ecole des Mines d'Alès; Centre des Matériaux des Mines d'Alès; MPA, 6 Avenue de Clavières, Alès Cedex F-30319 France
| | - Rodolphe Sonnier
- Ecole des Mines d'Alès; Centre des Matériaux des Mines d'Alès; MPA, 6 Avenue de Clavières, Alès Cedex F-30319 France
| | - Eric Guibal
- Ecole des Mines d'Alès; Centre des Matériaux des Mines d'Alès; MPA, 6 Avenue de Clavières, Alès Cedex F-30319 France
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38
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Pan Y, Wang W, Liu L, Ge H, Song L, Hu Y. Influences of metal ions crosslinked alginate based coatings on thermal stability and fire resistance of cotton fabrics. Carbohydr Polym 2017; 170:133-139. [DOI: 10.1016/j.carbpol.2017.04.065] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 03/28/2017] [Accepted: 04/23/2017] [Indexed: 10/19/2022]
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39
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Wang PJ, Hu XP, Liao DJ, Wen Y, Hull TR, Miao F, Zhang QT. Dual Fire Retardant Action: The Combined Gas and Condensed Phase Effects of Azo-Modified NiZnAl Layered Double Hydroxide on Intumescent Polypropylene. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b03953] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peng-Ji Wang
- School
of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Xiao-Ping Hu
- School
of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, P. R. China
- Centre
for Fire and Hazards Science, University of Central Lancashire, Preston PR1 2HE, U.K
| | - Dui-Jun Liao
- School
of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Yi Wen
- School
of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - T. Richard Hull
- Centre
for Fire and Hazards Science, University of Central Lancashire, Preston PR1 2HE, U.K
| | - Fei Miao
- School
of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Quan-Tong Zhang
- School
of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, P. R. China
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40
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Zheng H, Yang J, Han S. The synthesis and characteristics of sodium alginate/graphene oxide composite films crosslinked with multivalent cations. J Appl Polym Sci 2016. [DOI: 10.1002/app.43616] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Haicheng Zheng
- College of Chemistry and Chemical Engineering; Yangzhou University; Yangzhou 225002 China
| | - Jisheng Yang
- College of Chemistry and Chemical Engineering; Yangzhou University; Yangzhou 225002 China
| | - Suya Han
- College of Chemistry and Chemical Engineering; Yangzhou University; Yangzhou 225002 China
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41
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Qiu J, Li M, Zhao Y, Kong Q, Li X, Li C. Scalable synthesis of nanometric α-Fe2O3 within interconnected carbon shells from pyrolytic alginate chelates for lithium storage. RSC Adv 2016. [DOI: 10.1039/c5ra21541b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
By combining naturally abundant iron ions and sodium alginate into conventional wet-spinning and pyrolysis processes, α-Fe2O3 could be nanostructured and carbon-coated in a facile and scalable technique.
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Affiliation(s)
- Jun Qiu
- College of Chemistry and Chemical Engineering
- Ocean University of China
- Qingdao 266101
- China
| | - Mingjie Li
- CAS Key Lab of Bio-based Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao 266101
- China
| | - Yun Zhao
- Institute of Materials Science and Engineering
- Ocean University of China
- Qingdao 266101
- China
| | - Qingshan Kong
- CAS Key Lab of Bio-based Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao 266101
- China
| | - Xianguo Li
- College of Chemistry and Chemical Engineering
- Ocean University of China
- Qingdao 266101
- China
| | - Chaoxu Li
- CAS Key Lab of Bio-based Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao 266101
- China
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