3 edition of Modification and preparation of membrane in supercritical carbon dioxide found in the catalog.
Modification and preparation of membrane in supercritical carbon dioxide
Includes bibliographical references and index.
|Statement||Guang-Ming Qiu ... [et al.].|
|Contributions||Qiu, Guang-Ming, 1955-|
|LC Classifications||TP156.E8 M635 2009|
|The Physical Object|
|LC Control Number||2009054168|
Supercritical carbon dioxide (scCO 2) has been already adopted to perform modification of polymers by grafting of several vinyl monomers 37 By this choice one would take. A new method, the supercritical reverse phase evaporation method, for the preparation of liposomes in one step using supercritical carbon dioxide without any organic solvent toxic to the human body has been developed. This method allowed aqueous dispersions of liposomes to be obtained through emulsion formation by introduction of a given amount of water into a homogeneous mixture of Cited by:
The outstanding diffusivity and permeability of supercritical carbon dioxide (scCO2) are extremely beneficial for grafting reaction. In this work, aramid fibers (AF) are modified in scCO2 by glycidyl-polyhedral oliomeric silsesquioxane (POSS) with 2-ethylmethylimidazole (2E4MZ) on the basis of cleaning with acetone. The surface morphology and chemical structure of the modified AF were Cited by: 1. Find great deals on eBay for supercritical carbon dioxide. Shop with confidence.
The supercritical carbon dioxide induced swelling and plasticization of polyamide 11 were investigated. The swelling kinetics exhibit an initial region of large swelling, in which the diffusion of CO2 into the polymer follows Fickian behavior, and a subsequent region of small volume increase that asymptotically approaches an equilibrium swelling by: Supercritical carbon dioxide (s CO 2) is a fluid state of carbon dioxide where it is held at or above its critical temperature and critical pressure.. Carbon dioxide usually behaves as a gas in air at standard temperature and pressure (STP), or as a solid called dry ice when frozen. If the temperature and pressure are both increased from STP to be at or above the critical point for carbon.
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Buy Modification and Preparation of Membrane in Supercritical Carbon Dioxide (Chemistry Research and Applications) on FREE SHIPPING on qualified orders Modification and Preparation of Membrane in Supercritical Carbon Dioxide (Chemistry Research and Applications): Guang-ming Qiu, Yang Qiu, Rui Tian, You-yi Xu: Amazon Price: $ Introduction; Membrane formation via SCCO2 induced phase separation; Supercritical carbon dioxide extraction for membrane formation in TIPS; Membrane of polymer blends by SCCO2; Surface modification of membrane.
isbn: oclc number: description: 1 online resource (viii, pages): illustrations: contents: modification and preparation of membrane in supercritical carbon dioxide ; modification and preparation of membrane in supercritical carbon dioxide ; contents ; preface ; acknowledgment ; introduction ; mebrane formation via scco2 induced phase separation ; Regeneration of supercritical carbon dioxide is demonstrated by performing rejection experiments with two oil-like species, i.e.
triolein and e-vitamin. Retention factors and the carbon dioxide permeance have been determined simultaneously.
Complete retention is possible for both triolein and e-vitamin using a titania membrane at the costCited by: 1. Recently, supercritical fluids have emerged as more sustainable alternatives for the organic solvents often used in polymer processes.
This is the first book emphasizing the potential of supercritical carbon dioxide for polymer processes from an engineering point of view. In this work, two supercritical carbon dioxide (scCO 2) based techniques, such as the semi-continuous supercritical antisolvent process (SAS) and the supercritical fluid phase inversion process, in which scCO 2 plays the role of antisolvent, were employed.
Varying the kind of organic solvent used to prepare the polymeric solution, the polymer concentration, and operating pressure and temperature, it was Author: Stefano Cardea, Iolanda De Marco. Modification of PA‐6 Granules with Diketene and Diketene Acetone Adduct in Supercritical and Subcritical CO 2.
Molecular Characterization. Conclusions. General Conclusions on Polyamide Modification. Carboxylic Acid End‐group Modification of Poly(Butylene Terephthalate) with 1,2‐Epoxybutane in Supercritical CO 2.
BackgroundCited by: 3. With supercritical carbon dioxide as solubilizing and swelling agent, maleic anhydride and styrene can copolymerize to produce the poly (Man–alt–St), grafted onto the surface of the PVDF membrane.
Compared with that of the virgin PVDF membrane, the colour of Cited by: The membranes were characterized by 1 H NMR, 19 F NMR and HATR-FTIR spectroscopy. Spectra of samples taken from PVDF membranes soaked in dense CO 2 both in the absence and in the presence of BPO were undistinguishable from those obtained with the pristine PVDF membrane (spectra 1 and 2 in Fig.
1, Fig. 2).Also DSC thermograms were substantially the same and we could conclude that Cited by: When supercritical CO 2 is used as the solvent in a surface chemical modification process, it can carry the modification reagent into the void of agglomerated particles so that the modification reagent can contact with the particle surface and react with hydroxyl groups on the surface by: Supercritical carbon dioxide (scCO 2), which is by far the most widely used supercritical fluids (SCF), is relatively cheap, nontoxic, nonflammable and has zero ozone-depletion potential.
Using scCO 2 as a swelling agent, it is possible to obtain polymer modifications by avoiding thermal stresses and the plasticizing effect on polymers during impregnation .Cited by: Request PDF | Modification of Polymers in Supercritical Carbon Dioxide | The interaction of scFluids and polymers are governed by the intermolecular forces between solvent-solvent, solvent-polymer.
Modification of Nafion with silica nanoparticles in supercritical carbon dioxide for electrochemical applications Author links open overlay panel Anton S. Simonov a Mikhail S. Kondratenko a Igor V. Elmanovich a Victor E. Sizov a Elena P.
Kharitonova a Sergei S. Abramchuk a b Alexandr by: 4. “New chelate complexes of copper and iron: Synthesis and impregnation into a polymer matrix from solution in supercritical carbon dioxide” Ind. Eng. Chem. Res., 39, Cited by: 1. We report the successful grafting copolymerization of acrylic acid (AA) on a crosslinked porous chitosan membrane in supercritical carbon dioxide at pressures ranging from 13 to 25 MPa with the use of benzyl peroxide (BPO) as the reduction–oxidation free radical by: 7.
This text presents the latest advances in supercritical fluid technology, biocatalysis, bioprocess engineering, and crop breeding. It offers an in-depth review of the most recent principles and approaches utilized in the development and design of lipids for cosmetic, industrial and pharmaceutical, and food products.
Discussing a variety of lipid-active enzymes from animal, plant, fungal, and. Supercritical assisted enzymatic membranes preparation, for active packaging applications Article in Journal of Membrane Science – March with 84 Reads How we measure 'reads'.
Supercritical Carbon Dioxide for Sustainable Polymer Processes † Dr. Maartje F. Kemmere Process Development Group, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, PO BoxMB Eindhoven, The NetherlandsCited by: For preparation of an architecture membrane with hydrophobic properties, a method combining supercritical carbon dioxide (scCO2) and low temperature plasma treatment was used.
The effects of treating time, pressure and temperature in scCO2 fluid on surface hydrophobic property were studied. The results showed that the contact angle of the membrane that was firstly modified by low Cited by: 3. Introduction. Supercritical carbon dioxide (SCCO 2) treatment is a fascinating alternative non-thermal sterilization technique for e pressurized CO 2 is able to inactivate vegetative micro-organisms at low temperature, it can retain the fresh-like sensory, nutritional, and physical properties of many foods by avoiding thermal effects of traditional pasteurization .Cited by: 6.
Application of supercritical carbon dioxide in the preparation of biodegradable polylactide membranes Article in Journal of Applied Polymer Science 94(5) - .Pd/Si-MFI membranes are fabricated by depositing palladium nanoparticles onto Si-MFI membranes via opposing reactants chemical fluid deposition in supercritical carbon dioxide.
Palladium hexafluoroacetylacetonate [Pd(hfac)2] and ethanol are used as the Pd precursor and the reducing agent, respectively, in the deposition process.
The resulting Pd/Si-MFI membrane is characterized using Cited by: 9.Dissolving Biomolecules and Modifying Biomedical Implants with Supercritical Carbon Dioxide Article (PDF Available) in Pure and Applied Chemistry 72(7) July with Reads.