نتایج جستجو برای: interfacial polymerization

تعداد نتایج: 51941  

2011
Xiantao Shen Lei Ye

A new interfacial nano and molecular imprinting approach is developed to prepare spherical molecularly imprinted polymers with well-controlled hierarchical structures. This method is based on Pickering emulsion polymerization using template-modified colloidal particles. The interfacial imprinting is carried out in particle-stabilized oil-in-water emulsions, where the molecular template is prese...

2009
Sean X. Liu Jun-Tae Kim Sanghoon Kim Mukti Singh

Membrane separation is an important processing technology used for separating food ingredients and fractionating value-added components from food processing byproducts. Long-term performance of polymeric membranes in food protein processing is impeded by the formation of fouled layers on the membrane surface as a result of protein adsorption onto the membrane surface. Surface modification of sy...

2007

A number of processes are available: condensation-, interfacial-, suspensionand emulsion-polymerization. Suspension and emulsion polymerization are the preferred methods for the commercial production of polymer microsphere carrier particles and reference/standard particles for calibration of scientific instruments. In general, emulsion polymerization produces a smaller particle size and a narro...

2012
Ahmad Abdolahi Esah Hamzah Zaharah Ibrahim Shahrir Hashim

The present paper aims to study the preparation of polyaniline nanofibers through simple interfacial polymerization. Ammonium persulfate, hydrochloric acid and chloroform were used as oxidant, dopant and organic solvent respectively. Field Emission Scanning Electron Microscopy (FESEM), X-ray diffraction and Fourier Transform Infrared Spectroscopy (FTIR) techniques were used to analyze the produ...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2015
Ingmar Polenz David A Weitz Jean-Christophe Baret

Interfacial polymerization techniques offer a versatile route for microcapsule synthesis. We designed a microfluidic process to synthesize monodisperse polyurea microcapsules (PUMCs); the microcapsules are formed by an interfacial polymerization of isocyanate dissolved in the oil and an amine dissolved in water. We measure the mechanical properties of the capsule as well as transport properties...

2015
M. N. Abu Seman L. M. Kei M. A. Yusoff

Forward Osmosis (FO) polyamide thin-film composite membranes have been prepared by interfacial polymerization using commercial UF polyethersulfoneas membrane support. Different interfacial polymerization times (10s, 30s and 60s) in the organic solution containing trimesoyl chloride (TMC) at constant mphenylenediamine (MPD) concentration (2% w/v) were studied. The synthesized polyamide membranes...

Journal: :Journal of the mechanical behavior of biomedical materials 2017
Y J Li D Barthès-Biesel A-V Salsac

Vascular embolization is a minimally invasive treatment used for the management of vascular malformations and tumors. It is carried out under X-ray by navigating a microcatheter into the targeted blood vessel, through which embolic agents are delivered to occlude the vessels. Cyanoacrylate liquid glues have been widely used for vascular embolization owing to their low viscosity, rapid polymeriz...

Journal: :Mathematical and Computer Modelling 1999

Journal: :Angewandte Chemie 2021

Forming hydrogels with precise geometries is challenging and mostly done using photopolymerization, which involves toxic chemicals, rinsing steps, solvents, bulky optical equipment. Here, we introduce a new method for in situ formation of well-defined geometry sealed microfluidic chip by interfacial polymerization. The the hydrogel programmed design capillary pinning structures bringing into co...

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