2501
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Ma MG, Fu LH, Sun RC, Jia N. Compared study on the cellulose/CaCO3 composites via microwave-assisted method using different cellulose types. Carbohydr Polym 2012; 90:309-15. [DOI: 10.1016/j.carbpol.2012.05.043] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2012] [Revised: 05/05/2012] [Accepted: 05/15/2012] [Indexed: 10/28/2022]
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2502
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2503
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2504
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Goffin AL, Habibi Y, Raquez JM, Dubois P. Polyester-grafted cellulose nanowhiskers: a new approach for tuning the microstructure of immiscible polyester blends. ACS APPLIED MATERIALS & INTERFACES 2012; 4:3364-3371. [PMID: 22738142 DOI: 10.1021/am3008196] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Cellulose nanowhiskers (CNW), extracted from ramie fibers by sulfuric acid hydrolysis, were used as substrates to compatibilize binary polyester blends containing 50/50 (w/w) polycaprolactone (PCL) and polylactide (PLA). To tailor their interfacial energy and fine-tune their adhesion with the components of the blend, CNW were subjected to different surface polyester grafting by the means of ring-opening polymerization. PCL and PLA homopolyesters as well as P(CL-b-LA) diblock copolymers were successfully grafted on the surface of CNW and the resulting substrates were loaded into the PCL/PLA blend by melt-blending. Morphological and rheological analyses were conducted in order to evaluate the ability of these nanoparticles to enhance the compatibility of PCL/PLA blends. Our results showed that unmodified CNW as well as (co)polyester-grafted CNW improved, at different levels, the compatibility of PCL/PLA blends by preventing from coalescence the dispersed domains. (co)polyester-grafted CNW also enhance the mechanical properties of the blend, which can be explained by the formation of cocontinuous phase morphology at the interface. Our findings suggest that (co)polyester-grafted CNW, especially CNW-g-P(CL-b-LA) diblock copolymers, can serve as a suitable nanofiller to tune the compatibility of PCL/PLA blends and their related microstructures.
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Affiliation(s)
- Anne-Lise Goffin
- Laboratory of Polymeric and Composite Materials, Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons , Place du Parc 23, 7000 Mons (Belgium)
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2505
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Agarwal UP, Sabo R, Reiner RS, Clemons CM, Rudie AW. Spatially resolved characterization of cellulose nanocrystal-polypropylene composite by confocal Raman microscopy. APPLIED SPECTROSCOPY 2012; 66:750-756. [PMID: 22709974 DOI: 10.1366/11-06563] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Raman spectroscopy was used to analyze cellulose nanocrystal (CNC) -polypropylene (PP) composites and to investigate the spatial distribution of CNCs in extruded composite filaments. Three composites were made from two forms of nanocellulose (CNCs from wood pulp and the nano-scale fraction of microcrystalline cellulose) and two of the three composites investigated used maleated PP as a coupling agent. Raman maps, based on cellulose and PP bands at 1098 and 1460 cm(-1), respectively, obtained at 1 μm spatial resolution showed that the CNCs were aggregated to various degrees in the PP matrix. Of the three composites analyzed, two showed clear existence of phase-separated regions: Raman images with strong PP and absent/weak cellulose or vice versa. For the third composite, the situation was slightly improved but a clear transition interface between the PP-abundant and CNC-abundant regions was observed, indicating that the CNC remained poorly dispersed. The spectroscopic approach to investigating spatial distribution of the composite components was helpful in evaluating CNC dispersion in the composite at the microscopic level, which helped explain the relatively modest reinforcement of PP by the CNCs.
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Affiliation(s)
- Umesh P Agarwal
- USDA FS, Forest Products Laboratory, Madison, WI 53726, USA.
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2506
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Lin N, Huang J, Dufresne A. Preparation, properties and applications of polysaccharide nanocrystals in advanced functional nanomaterials: a review. NANOSCALE 2012; 4:3274-94. [PMID: 22565323 DOI: 10.1039/c2nr30260h] [Citation(s) in RCA: 420] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Intensive exploration and research in the past few decades on polysaccharide nanocrystals, the highly crystalline nanoscale materials derived from natural resources, mainly focused originally on their use as a reinforcing nanophase in nanocomposites. However, these investigations have led to the emergence of more diverse potential applications exploiting the functionality of these nanomaterials. Based on the construction strategies of functional nanomaterials, this article critically and comprehensively reviews the emerging polysaccharide nanocrystal-based functional nanomaterials with special applications, such as biomedical materials, biomimetic optical nanomaterials, bio-inspired mechanically adaptive nanomaterials, permselective nanostructured membranes, template for synthesizing inorganic nanoparticles, polymer electrolytes, emulsion nano-stabilizer and decontamination of organic pollutants. We focus on the preparation, unique properties and performances of the different polysaccharide nanocrystal materials. At the same time, the advantages, physicochemical properties and chemical modifications of polysaccharide nanocrystals are also comparatively discussed in view of materials development. Finally, the perspective and current challenges of polysaccharide nanocrystals in future functional nanomaterials are outlined.
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Affiliation(s)
- Ning Lin
- Grenoble Institute of Technology (Grenoble INP) - The International School of Paper, Print Media and Biomaterials (Pagora), BP65, 38402 Saint Martin d'Hères Cedex, Grenoble, France
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2507
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Smith SW, Chan H, Buesch C, Simonsen J, Conley JF. Improved Temperature Stability of Atomic Layer Deposition Coated Cellulose Nanocrystal Aerogels. ACTA ACUST UNITED AC 2012. [DOI: 10.1557/opl.2012.1073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTAtomic layer deposition (ALD) was used to coat cellulose nanocrystal (CNC) aerogel scaffolds with a thin conformal layer of Al2O3. Electron probe microanalysis indicates that the penetration of Al2O3 into the aerogel was greater than 50 μm. Thermogravimetric analysis (TGA) shows that Al2O3 coated CNC aerogel composites have improved temperature and oxidation resistance.
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2508
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Applications of functionalized and nanoparticle-modified nanocrystalline cellulose. Trends Biotechnol 2012; 30:283-90. [DOI: 10.1016/j.tibtech.2012.02.001] [Citation(s) in RCA: 306] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Revised: 02/06/2012] [Accepted: 02/06/2012] [Indexed: 12/16/2022]
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2509
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Kelley J, Simonsen J, Ding J. Poly(vinylidene fluoride-co-hexafluoropropylene) nanocomposites incorporating cellulose nanocrystals with potential applications in lithium ion batteries. J Appl Polym Sci 2012. [DOI: 10.1002/app.37790] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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2510
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Eyley S, Shariki S, Dale SEC, Bending S, Marken F, Thielemans W. Ferrocene-decorated nanocrystalline cellulose with charge carrier mobility. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:6514-6519. [PMID: 22486421 DOI: 10.1021/la3001224] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Ferrocene-decorated cellulose nanowhiskers were prepared by the grafting of ethynylferrocene onto azide functionalized cotton-derived cellulose nanowhiskers using azide-alkyne cycloaddition. Successful surface modification and retention of the crystalline morphology of the nanocrystals was confirmed by elemental analysis, inductively coupled plasma-atomic emission spectroscopy, X-ray photoelectron spectroscopy, and X-ray diffraction. The coverage with ferrocenyl is high (approximately 1.14 × 10(-3) mol g(-1) or 4.6 × 10(13) mol cm(-2) corresponding to a specific area of 61 Å(2) per ferrocene). Cyclic voltammetry measurements of films formed by deposition of ferrocene-decorated nanowhiskers showed that this small spacing of redox centers along the nanowhisker surface allowed conduction hopping of electrons. The apparent diffusion coefficient for electron (or hole) hopping via Fe(III/II) surface sites is estimated as Dapp = 10(-19) m(2)s(-1) via impedance methods, a value significantly less than nonsolvated ferrocene polymers, which would be expected as the 1,2,3-triazole ring forms a rigid linker tethering the ferrocene to the nanowhisker surface. In part, this is believed to be also due to "bottleneck" diffusion of charges across contact points where individual cellulose nanowhiskers contact each other. However, the charge-communication across the nanocrystal surface opens up the potential for use of cellulose nanocrystals as a charge percolation template for the preparation of conducting films via covalent surface modification (with applications similar to those using adsorbed conducting polymers), for use in bioelectrochemical devices to gently transfer and remove electrons without the need for a solution-soluble redox mediator, or for the fabrication of three-dimensional self-assembled conducting networks.
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Affiliation(s)
- Samuel Eyley
- School of Chemistry, University of Nottingham , University Park, Nottingham NG7 2RD, United Kingdom
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2511
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Preparation and characterization of thermal/pH-sensitive hydrogel from carboxylated nanocrystalline cellulose. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2012.01.026] [Citation(s) in RCA: 123] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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2512
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2513
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Lu P, Hsieh YL. Cellulose isolation and core–shell nanostructures of cellulose nanocrystals from chardonnay grape skins. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2011.11.023] [Citation(s) in RCA: 110] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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2514
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Ago M, Okajima K, Jakes JE, Park S, Rojas OJ. Lignin-Based Electrospun Nanofibers Reinforced with Cellulose Nanocrystals. Biomacromolecules 2012; 13:918-26. [DOI: 10.1021/bm201828g] [Citation(s) in RCA: 141] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mariko Ago
- Department of Forest
Biomaterials, North Carolina State University, Raleigh, North Carolina 27695, United States
- Faculty of Science
and Engineering, Tokushima Bunri University, Sanuki, Kagawa, Japan
| | - Kunihiko Okajima
- Faculty of Science
and Engineering, Tokushima Bunri University, Sanuki, Kagawa, Japan
| | - Joseph E. Jakes
- Performance Enhanced
Biopolymers, Forest Products Laboratory, USDA Forest Service, Madison, Wisconsin 53726, United
States
| | - Sunkyu Park
- Department of Forest
Biomaterials, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Orlando J. Rojas
- Department of Forest
Biomaterials, North Carolina State University, Raleigh, North Carolina 27695, United States
- Department
of Forest
Products Technology, School of Chemical Technology, Aalto University, FI-00076 Aalto, Espoo, Finland
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2515
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Ten E, Bahr DF, Li B, Jiang L, Wolcott MP. Effects of Cellulose Nanowhiskers on Mechanical, Dielectric, and Rheological Properties of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)/Cellulose Nanowhisker Composites. Ind Eng Chem Res 2012. [DOI: 10.1021/ie2023367] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Elena Ten
- Composite Materials and Engineering
Center, PO Box 641806, Washington State University, Pullman, Washington 99164-1806, United States
| | - David F. Bahr
- School of Mechanical and Materials
Engineering, PO Box 642920, Washington State University, Pullman, Washington 99164-2920, United States
| | - Bin Li
- School of Mechanical and Materials
Engineering, PO Box 642920, Washington State University, Pullman, Washington 99164-2920, United States
| | - Long Jiang
- Department of Mechanical Engineering,
PO Box 6050, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Michael P. Wolcott
- Composite Materials and Engineering
Center, PO Box 641806, Washington State University, Pullman, Washington 99164-1806, United States
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2516
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Filpponen I, Kontturi E, Nummelin S, Rosilo H, Kolehmainen E, Ikkala O, Laine J. Generic method for modular surface modification of cellulosic materials in aqueous medium by sequential "click" reaction and adsorption. Biomacromolecules 2012; 13:736-42. [PMID: 22257019 DOI: 10.1021/bm201661k] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A generic approach for heterogeneous surface modification of cellulosic materials in aqueous medium, applicable for a wide range of functionalizations, is presented. In the first step, carboxymethyl cellulose (CMC) modified with azide or alkyne functionality, was adsorbed on a cellulosic substrate, thus, providing reactive sites for azide-alkyne cycloaddition click reactions. In the second step, functional units with complementary click units were reacted on the cellulose surface, coated by the click-modified CMC. Selected model functionalizations on diverse cellulosic substrates are shown to demonstrate the generality of the approach. The concept by sequentially combining the robust physical adsorption ("physical click") and robust chemical reaction ("chemical click") allows versatile, simple, and environmentally friendly modification of a cellulosic substrate with virtually any azide- or alkyne-modified molecule and even functionalization with several types of units.
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Affiliation(s)
- Ilari Filpponen
- Department of Forest Products Technology, School of Chemical Technology, Aalto University , P.O. Box 16300, 00076 Aalto, Finland
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2517
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Matthews JF, Beckham GT, Bergenstråhle-Wohlert M, Brady JW, Himmel ME, Crowley MF. Comparison of Cellulose Iβ Simulations with Three Carbohydrate Force Fields. J Chem Theory Comput 2012; 8:735-48. [DOI: 10.1021/ct2007692] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | - Gregg T. Beckham
- Department of Chemical Engineering, Colorado School of Mines, Golden, Colorado, United
States
| | - Malin Bergenstråhle-Wohlert
- Department of Food
Science, Cornell University, Ithaca, New
York, United States
- Wallenberg
Wood Science Center, Royal Institute of Technology, Stockholm, Sweden
| | - John W. Brady
- Department of Food
Science, Cornell University, Ithaca, New
York, United States
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2518
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Luo N, Varaprasad K, Reddy GVS, Rajulu AV, Zhang J. Preparation and characterization of cellulose/curcumin composite films. RSC Adv 2012. [DOI: 10.1039/c2ra21465b] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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2519
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Koga H, Kitaoka T, Isogai A. Paper-immobilized enzyme as a green microstructured catalyst. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm30759f] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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2520
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Zhang H, Yang Y, Dai W, Yang D, Lu S, Ji Y. An aqueous-phase catalytic process for the selective hydrogenation of acetylene with monodisperse water soluble palladium nanoparticles as catalyst. Catal Sci Technol 2012. [DOI: 10.1039/c2cy20179h] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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2521
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Salajková M, Berglund LA, Zhou Q. Hydrophobic cellulose nanocrystals modified with quaternary ammonium salts. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm34355j] [Citation(s) in RCA: 243] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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2522
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Yang J, Han CR, Duan JF, Ma MG, Zhang XM, Xu F, Sun RC, Xie XM. Studies on the properties and formation mechanism of flexible nanocomposite hydrogels from cellulose nanocrystals and poly(acrylic acid). ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm35498e] [Citation(s) in RCA: 122] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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2523
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Khelifa F, Habibi Y, Benard F, Dubois P. Effect of cellulosic nanowhiskers on the performances of epoxidized acrylic copolymers. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm33917j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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2524
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Wang J, Zhang S, Pan B, Zhang W, Lv L. Hydrous ferric oxide-resin nanocomposites of tunable structure for arsenite removal: effect of the host pore structure. JOURNAL OF HAZARDOUS MATERIALS 2011; 198:241-246. [PMID: 22047722 DOI: 10.1016/j.jhazmat.2011.10.036] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Revised: 09/19/2011] [Accepted: 10/11/2011] [Indexed: 05/31/2023]
Abstract
Hydrous ferric oxide (HFO) loaded hybrid sorbents are considered to be excellent materials for arsenic removal from water. However, role of the host pore structure in the performance of the composites is still unclear. In the current study five HFO nanocomposites of similar HFO loadings (3.9-5.3% in Fe mass) were fabricated for arsenite removal, using self-synthesized polystyrene (PS) resins of similar particle sizes but different pore structures as hosts. Structure analysis demonstrated that the particle size of HFO aggregates decreased with decreasing pore size of PS. The adsorption of arsenite onto the nanocomposites with PS of smaller average pore size achieved equilibrium faster. Analysis of kinetic data with the intraparticle diffusion model demonstrated that arsenite adsorption onto PS-HFO nanocomposites with larger HFO particles was controlled by intraparticle diffusion whereas the limitation caused by intraparticle diffusion was weakened as the particle size of HFO decreased. The adsorption capacity of the hybrid adsorbents increased with decreased pore size of PS. These results indicated that the pore structure of the support materials would play a significant role in the performance of nanoparticle-loaded porous adsorbents.
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Affiliation(s)
- Jing Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, PR China
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2525
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Moon RJ, Martini A, Nairn J, Simonsen J, Youngblood J. ChemInform Abstract: Cellulose Nanomaterials Review: Structure, Properties and Nanocomposites. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/chin.201142280] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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