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Henan Tongwei Medical Equipment Co., LtdCall us : +86 − −19139704654 // Email us : [email protected]
Henan Tongwei Medical Equipment Co., LtdCall us : +86 − −19139704654 // Email us : [email protected]
Polypropylene hollow fiber microporous membranes have been used in a wide range of applications including blood oxygenator The hydrophobic feature of the polypropylene surface causes membrane fouling To minimize fouling a modification consisting of three steps: surface activation in H2 and O2 plasma membrane immersion in polyethylene glycol (PEG) and plasma graft polymerization was
Adsorption of Pb2+ Cu2+ and Co2+ by polypropylene fabric and polyethylene hollow fiber modified by radiation-induced graft copo : After the plasma discharge treatment the permeability of the membrane to water increased to 9% of that of a polyethylene hollow fiber having pore diameters larger than 0 4 μm : The effect of iron sulfide minerals and biofilm development on gas transfer was
Polylactic acid (PLA) was blended with polyethylene glycol (PEG) and spun via a melt-electrospinning system The effect of PEG content on the PLA melt and the thermal behaviour of the blend was studied using dynamic rheometry and differential scanning calorimetry respectively By fitting a rheological model parameters such as zero-shear viscosity and the relaxation time of polymer chains
Membrane distillation has the potential to concentrate solutions to their saturation level thus offering the possibility to recover valuable salts from the solutions The process performance and stability however is strongly dependent upon the features of membranes applied In addition several other parameters membrane thickness and
Polyethylene Glycol on Polysulfone Membranes Chong Shen1 Guoliang Zhang2 Qin Meng1* 1Department of Chemical and Biological Engineering Zhejiang University Hangzhou China 2College of Biological and Environmental Engineering Zhejiang University of Technology Hangzhou China Abstract Cytocompatibility is critically important in design of biomaterials for application in tissue engineering
Polyethylene glycol (PEG) chains with different lengths were covalently bonded to polypropylene membranes by means of RF plasma polymerisation of acrylic acid (pp-Aac) followed by mono-amino PEG attachment in liquid phase Two reactor configurations were tested for the plasma deposition of ppAAc in order to obtain high retention of carboxylic groups in the deposited thin films A best
25 07 2007Polyethylene glycol (PEG) chains with different lengths were covalently bonded to polypropylene membranes by means of RF plasma polymerisation of acrylic acid (pp-Aac) followed by mono-amino PEG attachment in liquid phase Two reactor configurations were tested for the plasma deposition of ppAAc in order to obtain high retention of carboxylic groups in the deposited thin films
The 0 2 mu m hydrophobic polypropylene membranes of Examples 15-20 were treated with photografting solutions comprising 12% polyethylene glycol-dimethacrylate (Mw=400) Darocur 1173 62% ethylene glycol and 25% acetone substitute in the same manner as described in Example 1-8 The results of membrane wettability after such treatment follow in
Membranes of Polymers of Intrinsic Microporosity (PIM-1) Modified by Poly(ethylene glycol) 2016: Phosphonic Acid-Functionalized Diblock Copolymer Nano-Objects via Polymerization-Induced Self-Assembly Halloysite nanotubes modification with MAPC1 Piezo-force and vibration analysis of ZnO nanowire arrays for sensor application
New hydrophilic polypropylene membranes fabrication and evaluation New hydrophilic polypropylene membranes fabrication and evaluation Chung T C Lee S H 1997-04-18 00:00:00 ABSTRACT: This article discusses a new method to prepare polypropylene membrane that has hydrophilic surfaces and asymmetric porous structure This membrane is based on a newly developed hydroxylated polypropylene
An anti-protein stained ultrafiltration membrane was prepared by grafting monoacrylate polyethylene glycol(PEG) macromer onto a polypropylene(PP)membrane with UV-irradiation methods PEG-grafted membranes can decrease the fouling resulting from the protein filtration Monoacrylate PEG is prepared by inducing the acrylate functional groups to
Polypropylene (PP) membranes have been successfully modified using ozone or oxidizing agents such as benzoyl peroxide (BPO) and benzophenonyl bromoisobutyrate (BPBB) as precursor for grafting of hydroxyethyl methacrylate (HEMA) [31 33] N N-dimethylaminoethyl methacrylate (DMAEMA) [34] and acrylic acid [35] Meanwhile for
/polypropylene (PP) composite membranes by three steps: (1) grafting the PP surface with polyethylene glycol (PEG) with the aid of argon plasma (TPP) (2) a pressure-assisted filtration of GO dispersion and (3) functionalization by various polyelectrolytes The fabricated polyelectrolyte modified GO/PP composite membranes not only show excellent
Polyethylene Glycol grafting on Polypropylene membranes for anti-fouling properties Italiano Italiano English Polyethylene glycol (PEG) chains with different lengths were covalently bonded to polypropylene membranes by means of RF plasma polymerisation of acrylic acid (pp-Aac) followed by mono-amino PEG attachment in liquid phase Two reactor configurations were tested for the plasma
28 07 1981Membrane forming polymers are converted to hydrophilic polymeric membranes by (a) grafting a polyoxyethylene chain to a membrane forming polymer structure and thereafter forming a membrane (b) coating a membrane with a polymer to which a polyoxyethylene chain has been grafted or (c) grafting in situ a polyoxyethylene chain to a formed membrane polymer
Poly(ethylene glycol) monoacrylates (PEGMAs) with a molecular weight between 400 and 1 000 g mol−1 were grafted by ultraviolet initiated photopolymerization on the surface of polycarbonateurethane (PCU) for increasing its hydrophilicity and improving its hemocompatibility The surface-grafted PCU films were characterized by Fourier transformation infrared spectroscopy X-ray photoelectron
New hydrophilic polypropylene membranes fabrication and evaluation New hydrophilic polypropylene membranes fabrication and evaluation Chung T C Lee S H 1997-04-18 00:00:00 ABSTRACT: This article discusses a new method to prepare polypropylene membrane that has hydrophilic surfaces and asymmetric porous structure This membrane is based on a newly developed hydroxylated polypropylene
Polyethylene glycol (PEG) chains with different lengths were covalently bonded to polypropylene membranes by means of RF plasma polymerisation of acrylic acid (pp-Aac) followed by mono-amino PEG attachment in liquid phase Two reactor configurations were tested for the plasma deposition of ppAAc in order to obtain high retention of carboxylic groups in the deposited thin films A best
11 05 1993The 0 2 μm hydrophobic polypropylene membranes of Examples 15-20 were treated with photografting solutions comprising 12% polyethylene glycol-dimethacrylate (Mw=400) Darocur 1173 62% ethylene glycol and 25% acetone substitute in the same manner as described in Example 1-8 The results of membrane wettability after such treatment follow in Table VI
Free Online Library: Effects of polymer molecular weight concentration and role of polyethylene glycol as additive on polyacrylonitrile homopolymer membranes (Report) by Polymer Engineering and Science Engineering and manufacturing Science and technology general Chemical concentration Research Chemical engineering Chemical engineering research Infrared spectroscopy Analysis
A major problem in membrane technology for applications such as wastewater treatment or desalination is often the loss of membrane permeability due to biofouling initiated from protein adsorption and biofilm formation on the membrane surface In this study we developed a relatively simple and yet versatile approach to prepare polypropylene (PP) membrane with highly effective non-biofouling
(ethylene glycol) Hydrogel Membrane Reinforced with Methyl Methacrylate-Grafted Polypropylene Fibers for Possible Use as Wound Dressing L C Lopergolo 1 2 A B LugaŸo 1 L H Catalain2 1Institut od ePesquisa sEnergetica Nucleare IPEN-CNEN/SP - Travessa R 400 05508-970 SaŸ Paulo-SP Brazil 2Institut odeQuˇmica Universidad SaŸPaulo CP 26 077 05513-970 Paulo-SP Brazil Received 10
Cell fusion technology mainly adopts polyethylene glycol: polyethylene glycol (PEG) molecules can change the biofilm structure of various types of cells so that the lipid molecules of the plasma membrane at the contact points of the two cells are evacuated and recombined due to the interface between the two cells The mutual affinity of the bilayer membranes and the surface tension of each
Sorption of water in nylon grafted acrylamide membranes pdf 466 Кб Grafting of acrylonitrile onto different cellulose forms by the xanthate method pdf 472 Кб Grafting of acrylamide onto guar gum using KMNO4oxalic acid redox system pdf 486 Кб Grafting of acrylonitrile onto styrene-maleic acid copolymer by tetravalent cerium ion pdf 528 Кб Grafting maleic anhydride and comonomers onto
Herein methoxypolyethylene glycol (MPEG) brushes with predetermined chain lengths and grafting densities were prepared from hydrophobic macroporous polypropylene membrane (MPPM) by click chemistry The grafting density of MPEG on the membrane rose with MPEG concentration and click reaction time while with the decrease of pendent length
Polyethylene glycol acrylate-grafted polysulphone membrane for artificial lungs: plasma modification and haemocompatibility improvement To cite this article: Weiping Wang et al 2015 Biomed Mater 10 065022 View the article online for updates and enhancements Related content In vitro biocompatibility of plasma-aided surface-modified 316L stainless steel for intracoronary stents Cem Bayram
In contrast Kim and Lee [16] found that smaller molecular weight of polyethylene glycol (PEG 200 and PEG 400) can be used as a pore reducing hydrophilic additive rather than a pore forming one Molecular weight of the additives has a fine control over the morphology and permeability of the membranes [10 16 41] Thus to observe the effect of PEG on the pore size of the membrane the effects
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