the effects of non-solvent on surface morphology and

Role of shell composition and morphology in achieving

The residual surface sensitivity for the alloy system suggests significant charge carrier interaction with the surface Conversely benefits of the thick SILAR grown ZnS shell are compromised by morphological defects in the shell and by the stabilization of bulk-like line defects likely at the alloy shell/ZnS shell interface This surface roughness could be the result of several factors For

Effect of Different Additives on Separation Performance of

um chloride to control the morphology of the po-rous fibers Shi et al [17] investigated the effects of LiCl and glycerol on the morphology of PVDF hollow fiber membranes Naim et al [18] investi-gated the PVDF hollow fiber membranes using LiCl as an additive for CO2 separation by ethanolamine as absorbent In other work Bot-

A New Insight into Morphology of Solvent Resistant

A New Insight into Morphology of Solvent Resistant Nanofiltration (SRNF) Membranes: casts on a suitable surface by mean of casting in-strument with a specified thickness and after par- tial vaporization of solvent the cast film immerses in a non-solvent bath called coagulation bath In this method a thin skin layer of polymer creates on top surface of membrane film because of par-tial

Javad Seyfi

The effects of polymer nanoparticle and non-solvent contents were investigated on the surface morphology composition and wettability of the samples A comparison was also made between the solution casting and dip-coating techniques It was found that the dip-coating technique was not as efficient as solution casting because of the lower

US Patent Application for HYBRID MEMBRANE AND

A hybrid membrane particularly of polyacrylonitrile (PAN)/graphene oxide (GO)/SiO2 separates oil and water even from emulsions The membrane can be made by one-step electrospinning adding GO and SiO2 nanofillers in PAN in various concentrations The nanofillers may be uniformly embedded in the nanofibrous structure of the electrospun hybrid membrane with GO mainly embedded inside the PAN

Morphology of the Silver Iodobromide T

Abstract: The morphologies of the silver iodobromide T-grain crystal surface the doped emulsion crystal surface with the dopant K 4 [Ru(CN) 6] and the sulfur plus gold sensitized doped emulsion crystal surface were observed The effects of the light exposure on above crystal surfaces were also studied with AFM The results show that while the grain surfaces appear to be flat when observed

Effect of Different Additives on Separation Performance of

um chloride to control the morphology of the po-rous fibers Shi et al [17] investigated the effects of LiCl and glycerol on the morphology of PVDF hollow fiber membranes Naim et al [18] investi-gated the PVDF hollow fiber membranes using LiCl as an additive for CO2 separation by ethanolamine as absorbent In other work Bot-

Effect of coagulation medium on PVDF pervaporation

Free Online Library: Effect of coagulation medium on PVDF pervaporation membrane morphology for the separation of butanol/water mixture (poly(vinylidene fluoride) Report) by Advances in Natural and Applied Sciences Science and technology general Alcohol Properties Alcohol Denatured Ethanol Pervaporation Methods Polyvinylidene fluoride Separation (Technology) Innovations

Diffusion induced phase separation with crystallizable

Diffusion induced phase separation with crystallizable nylons I Mass transfer processes for nylon 4 6 A M W Bulte M H V Mulder C A Smolders H Strathmann Facul~ of Chemical Technology Universi~ of Twente P O Box 217 7500 AE Enschede The Netherlands Received 26 July 1995 revised 21 May 1996 accepted 21 May 1996 Abstract Mass transfer during membrane formation by means of

PROCESS FOR MODIFYING THE SURFACE MORPHOLOGY

27 11 2014The present invention relates to a process for modifying the surface morphology of a medical device The modified surface has among other advantageous properties an improved capacity for sorption or conjugation of a variety of bioactive agents the addition of which will turn the medical device into a localized drug delivery system

Quang Trong Nguyen2

This work focuses on the study of the morphology forming of Polysulfone (PSf) and polyacrylic acid (PAA) membranes which are prepared by mixing both of the polymers in DMF and the obtained blend is precipitated in water (non-solvent) The precipitation kinetic and the effects of polysulfone concentration drying-time in free-air and proportions of both polymers are investigated Based on the

A New Insight into Morphology of Solvent Resistant

A New Insight into Morphology of Solvent Resistant Nanofiltration (SRNF) Membranes: casts on a suitable surface by mean of casting in-strument with a specified thickness and after par- tial vaporization of solvent the cast film immerses in a non-solvent bath called coagulation bath In this method a thin skin layer of polymer creates on top surface of membrane film because of par-tial

Effects of Genistein Modification on Miscibility and

On the basis of DSC and POM data the morphology phase diagram of PA:PVP/G blends is mapped out which consisted of various coexistence regions such as isotropic liquid + liquid liquid + crystal liquid + liquid + crystal and solid crystal regions Subsequently PA:PVP membranes modified with genistein were prepared by coagulation via solvent (dimethyl sulfoxide DMSO) and non-solvent

Investigating the effects of polymer molecular weight and

Fig 3 shows the surface morphology of the P60 series of samples made by addition of 30 40 and 50 vol % of non-solvent at different magnifications As is evident from the low magnification images increasing the ethanol concentration results in a remarkable change in the surface morphology of samples in particular once the ethanol content was increased from 30 to 40 vol %

Thermochimica Acta

Coagulation bath temperature has significant effects on the coagulation process by controlling the coagulation rate i e exchange rate between solvent/non-solvent and significantly affects physical properties of PAN fibers [13–15] At low bath tem-peratures the rate of solvent out-diffusion is higher than the rate of non-solvent

Microporous polyethersulfone membranes prepared

Read Microporous polyethersulfone membranes prepared under the combined precipitation conditions with non‐solvent additives Polymers for Advanced Technologies on DeepDyve the largest online rental service for scholarly research with thousands of academic publications available at

Characteristics performance and stability of

Their effects on membrane structure and their stability in the polymer membrane matrix as well as the resulting membrane performance were systematically compared in order to determine the additive that should be preferred The investigated membrane characteristics include surface hydrophilicity (by contact angle) surface charge (by zeta potential) surface chemistry (by FTIR spectroscopy

Effect of Different Additives on Separation Performance of

um chloride to control the morphology of the po-rous fibers Shi et al [17] investigated the effects of LiCl and glycerol on the morphology of PVDF hollow fiber membranes Naim et al [18] investi-gated the PVDF hollow fiber membranes using LiCl as an additive for CO2 separation by ethanolamine as absorbent In other work Bot-

Archive of SID

The effects of bore fluid solution composition coagulation bath temperature air-gap distance and humidity on the morphologies of micro-porous PES hollow fibre membranes were investigated Light transmission microscopy was used to determine the precipitation rate during VIPS stage as well as during non-solvent liquid-induced

Phase separation analysis in the ternary system of poly

of non-solvent at room temperature It was then rinsed in distilled water to remove residual solvent Morphology of the membranes Scanning electron microscopy (SEM) was used to observe the morphology of PBS membranes Top surface and cross-section images were prepared by fracturing the dried membranes in liquid nitrogen

Comparison between gelatin/carboxymethyl cellulose and

The comparison between Tramadol drug loaded microspheres prepared from gelatin/sodium carboxymethyl cellulose (NaCMC) and those prepared from gelatin/sodium carboxymethyl nanocellulose (NaCMNC) in presence of glutaraldehyde (GA) as cross linker was carried out Cellulose isolated from rice straw was hydrolyzed using 65% H2SO4 to prepare nanoparticles with average particle size

Effect of Ethanol Concentrations in Internal Coagulant on

inversion method from 18 wt % solids of 18:10:72 (weight ratio) PES/Non-solvent/NMP solutions Effect of ethanol concentrations in internal coagulant on morphology and separation performance of PES hollow fiber UF membranes were investigated UF membranes were characterized in terms of

Effects of Solvent / Non

Effects of Solvent / Non-solvent System on the Properties and Structure of Polyethersulfone Microporous Membrane LI Jing-feng XU Zhen-liang YANG Hu (Chemical Engineering Research Center East China University of Science and Technology Shanghai 200237 China)

1 Introduction

The effects of the type of the antisolvent and the presence of multiwalled carbon nanotubes (MWNTs) on membrane morphology and the crystal structure developed within the membranes were studied The crystallization of the PVDF upon immersion precipitation occurred predominantly in the α -phase when water is used as the antisolvent or in the absence of the carbon nanotubes

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