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公开(公告)号：KR1020120094362A
公开(公告)日：2012-08-24
申请号：KR1020110013818
申请日：2011-02-16
Applicant: 한국화학연구원
CPC classification number: B01D71/16 , B01D69/02 , B01D69/087 , B01D2325/24 , B01D2325/36
Abstract: PURPOSE: An acetylated alkyl cellulose separating membrane based on thermal induced phase separation and a method for manufacturing the same are provided to improve membrane fouling resistance characteristic and to mechanical characteristic. CONSTITUTION: A polymer solution for manufacturing an acetylated alkyl cellulose separating membrane includes acetylated alkyl cellulose and polyethylene glycol as a poor solvent. The weight average molecular weight of the acetylated alkyl cellulose is in a range between 50,000 and 2,000,000. The degree of substitution of alkyl groups per the unit structure of cellulose is in a range between 1.0-2.0 molar ratios. The degree of substitution of acetyl groups per the unit structure of cellulose is in a range between 1.0-2.0 molar ratios. The weight average molecular weight of the polyethylene glycol is in a range between 200 and 1,000.
Abstract translation: 目的：提供一种基于热诱导相分离的乙酰化烷基纤维素分离膜及其制造方法，以改善膜结垢特性和机械特性。 构成：用于制造乙酰化烷基纤维素分离膜的聚合物溶液包括乙酰化烷基纤维素和聚乙二醇作为不良溶剂。 乙酰化烷基纤维素的重均分子量在50,000和2,000,000之间。 纤维素单位结构中烷基的取代度在1.0〜2.0摩尔比范围内。 纤维素单位结构中乙酰基的取代度在1.0-2.0摩尔比之间。 聚乙二醇的重均分子量在200和1,000之间。
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公开(公告)号：KR101161709B1
公开(公告)日：2012-07-03
申请号：KR1020100070574
申请日：2010-07-21
Applicant: 한국화학연구원
Abstract: 본 발명은 다공성 중공사막 및 이의 제조방법에 관한 것으로서, 더욱 상세하게는 아세틸화된 알킬 셀룰로오스와 빈용매를 이용한 다공성 중공사막을 제조하는 방법 및 상기 제조방법으로 제조된 다공성 중공사막에 관한 것이다. 본 발명의 다공성 중공사막은 매크로보이드가 형성되지 않아 분리막의 강도가 높아지는 효과가 있을 뿐만 아니라 투과 성능이 우수하며, 친수성 고분자 소재를 이용하여 내오염성이 우수해 수처리용 중공사막 등으로 사용하기에 적합하다.
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公开(公告)号：KR1020120009821A
公开(公告)日：2012-02-02
申请号：KR1020100070574
申请日：2010-07-21
Applicant: 한국화학연구원
CPC classification number: B01D71/16 , B01D67/00 , B01D69/02 , B01D69/08 , B01D2325/02 , B01D2325/20 , B01D2325/24
Abstract: PURPOSE: A porous hollow fiber membrane using acetylated alkyl cellulose and a method for manufacturing the same are provided to improve the water permeability and the mechanical strength of the porous hollow fiber membrane by being composed of fine cells. CONSTITUTION: A polymer solution for manufacturing a porous hollow fiber membrane includes 10-30 weight% of acetylated alkyl cellulose as a cellulose compound and 70-90 weight% of a poor solvent. The cellulose compound further includes one or more selected from a group including cellulose acetate, cellulose triacetate, cellulose acetate propionate, and a cellulose acetate butylate. The alkyl group of the acetylated alkyl cellulose is methyl group, ethyl group, propyl group, hydroxyethyl group, or hydroxypropyl group. The substituted degree of the alkyl group of the acetylated alkyl cellulose is between 0.1 and 2.9. The poor solvent is one or more selected from a group including triethylene glycol, diethylene glycol, glycerin, 2-methyl-2,4-pentanediol, 2-ethyl-1,3-hexandiol, and sulfolane.
Abstract translation: 目的：提供一种使用乙酰化烷基纤维素的多孔中空纤维膜及其制造方法，其通过由细小细胞构成而提高多孔中空纤维膜的透水性和机械强度。 构成：用于制造多孔中空纤维膜的聚合物溶液包括10-30重量％的作为纤维素化合物的乙酰化烷基纤维素和70-90重量％的不良溶剂。 纤维素化合物还包括选自包括乙酸纤维素，三乙酸纤维素，乙酸丙酸纤维素和乙酸丁酸纤维素的一种或多种。 乙酰化烷基纤维素的烷基是甲基，乙基，丙基，羟乙基或羟丙基。 乙酰化烷基纤维素的烷基的取代度为0.1〜2.9。 不良溶剂是选自三甘醇，二甘醇，甘油，2-甲基-2,4-戊二醇，2-乙基-1,3-己二醇和环丁砜的一种或多种。
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