Lg Chem, Ltd

Young-Hoon Ko

Jae-Hong Kim

Chong-Kyu Shin

Phill Lee

Hye-Jin Kwon

Young-Ju Lee

Seung-Pyo Jeong

Joung-Eun Yoo

Keun-Won Song

The present disclosure relates to a water-treatment separation membrane including: a porous support and a polyamide layer formed on the porous support, wherein the polyamide layer contains an antioxidant having a solubility parameter value of 9 (J/cm)to 22 (J/cm), and a method of manufacturing the same.

Polyamide water-treatment separation membrane having superior oxidation resistance and chlorine resistance properties, and method of manufacturing the same

A water-treatment separation membrane with good antifouling properties includes a support having pores, a polyamide layer formed on the support, and a passivation layer comprising specific materials formed on the polyamide layer.

Polyamide water-treatment separation membrane with improved antifouling properties and manufacturing method thereof

A water-treatment separating membrane includes a polyamide active layer formed on999 a porous support. The ratio of a maximum value with respect to a minimum value of a ratio of a peak height of a C&#x2550;O double bond of a carboxyl group (&#x2014;COOH) with respect to a peak height of a C&#x2550;O double bond combined with an amide group (&#x2014;CONH&#x2014;) is from 1.2 to 4, when measured after acid treating the polyamide active layer and by using a Fourier transform infrared spectrometer (FTIR).

Water-treatment separating membrane of high flux having good chlorine resistance

A water-treatment separating membrane includes a polyamide active layer formed on a porous support. When the polyamide active layer is dyed using a 5% aqueous solution of Rhodamine B, at least a curve pattern formed by connecting two or more arcs is formed in at least a partial area of the polyamide active layer.

A method of manufacturing a water-treatment separating membrane includes forming an aqueous amine solution layer on a porous support, and forming a polyamide active layer by dropping droplets of an organic solution including an acyl halide compound on the aqueous amine solution layer. A water-treatment separating membrane manufactured by the same also is provided.

Water-treatment separating membrane of high flux having good chlorine resistance and method of manufacturing the same

The present disclosure relates to a method of manufacturing a water treatment membrane having high chlorine resistance and high permeability, the method including: forming an aqueous amine solution layer on a porous support, using an aqueous amine solution including a fluorine compound having an epoxy group in a terminal thereof and an amine compound; and forming a polyamide layer containing the fluorine compound by bringing an organic solution containing acyl halide into contact with the aqueous amine solution layer, and a water treatment membrane manufactured using the same.

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Daejeon, South Korea

Young-Hoon Ko