公开(公告)号：US20220282048A1

公开(公告)日：2022-09-08

申请号：US17597430

申请日：2020-05-28

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Sung Yeon HWANG ,  Jeyoung PARK ,  Dong Yeop OH ,  Tae Ho KIM ,  Si Gyeong LEE ,  Myung Suk SHIN ,  Jong Geon JEGAL

IPC: C08J5/04 ,  C08G63/81 ,  C08G63/12 ,  C08K7/02

Abstract: A biodegradable composite material which is produced by polymerizing a mixture of an aqueous dispersion of a natural polymer nanofiber including any one or more of a chitin nanofiber and a cellulose nanofiber, a dicarboxylic acid or a derivative thereof, and a diol. The biodegradable composite material has excellent biodegradable and mechanical properties.

公开(公告)号：US20200216660A1

公开(公告)日：2020-07-09

申请号：US16625260

申请日：2018-06-20

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Dong Yeop OH ,  Jong Geon JEGAL ,  Sung Yeon HWANG ,  Je Young PARK ,  Tae Ho KIM ,  Hyeon Yeol JEON

IPC: C08L67/02 ,  C08L1/02

Abstract: A polybutylene succinate (PBS) nanocomposite material includes a matrix comprising polybutylene succinate chains, and nanocelluloses dispersed between the polybutylene succinate chains. The PBS composite material may be produced by polymerizing 1,4-butanediol and succinic acid or a derivative thereof in a mixture of 1,4-butanediol and succinic acid or a derivative thereof with nanocelluloses. The PBS nanocomposite material and the method have improved properties, which does not require a surface hydrophobization pretreatment process of cellulose, melt kneading, and solution mixing processes.

公开(公告)号：US20150307659A1

公开(公告)日：2015-10-29

申请号：US14709264

申请日：2015-05-11

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Young Taik HONG ,  Jang Yong LEE ,  Tae Ho KIM ,  Duk Man YU ,  Seog Je KIM

IPC: C08G65/48 ,  H01M8/20 ,  H01M8/18 ,  H01M8/10 ,  H01M8/02

CPC classification number: C08G65/48 ,  C08G61/10 ,  C08G61/12 ,  C08G65/4012 ,  C08G2261/126 ,  C08G2261/142 ,  C08G2261/1452 ,  C08G2261/148 ,  C08G2261/312 ,  C08G2261/3444 ,  C08G2261/412 ,  C08G2261/516 ,  H01M8/0221 ,  H01M8/1023 ,  H01M8/1032 ,  H01M8/188 ,  H01M8/20 ,  H01M2008/1095 ,  H01M2300/0082 ,  Y02E60/528 ,  Y02P70/56

Abstract: The present invention relates to an ion conducting polymer including a partially branched block copolymer; a method of preparing the same; an ion conductor including the ion conducting polymer; an electrolytic membrane including the ion conducting polymer; a membrane-electrode assembly comprising the electrolytic membrane, and a battery comprising the same; and a separation membrane for a redox flow battery including the ion conducting polymer, and a redox flow battery comprising same. Specifically, the partially branched block copolymer includes: a first block including a hydrophilic first polymer; a second block derived from a hydrophobic second polymer having two or more reactive groups respectively on its both ends, in such a way as to form branching points forming side branches on a main chain; and optionally a third block including a hydrophobic third polymer. The ion conducting polymer in the form of a partially branched block copolymer can prepare a polymer membrane having improved conductivity and superior physical properties such as tensile strength elongation at break, etc., while having the same or similar ion-exchange capacity (IEC), percentage water absorption and/or degree of dimensional change compared to conventional ion conducting polymers in the form of linear block copolymers. Because of such outstanding physical properties, the polymer membrane can be used as a membrane-electrode assembly for a fuel cell, and a redox flow battery comprising the same as a separation membrane can exhibit outstanding cell performance and maintain high discharge charge capacity retention rate even when repeatedly charged and discharged several times.

Abstract translation: 本发明涉及包含部分支化的嵌段共聚物的离子导电聚合物; 其制备方法; 包括离子导电聚合物的离子导体; 包括离子导电聚合物的电解质膜; 包括电解膜的膜 - 电极组件和包含该电解质膜的电池组; 以及包含离子导电聚合物的氧化还原液流电池用分离膜和包含该离子导电性聚合物的氧化还原液流电池。 具体地说，部分支化的嵌段共聚物包括：包含亲水性第一聚合物的第一嵌段; 衍生自在其两端分别具有两个或更多个反应性基团的疏水性第二聚合物的第二嵌段，以形成在主链上形成侧枝的分支点; 和任选的包含疏水性第三聚合物的第三嵌段。 部分支链嵌段共聚物形式的离子导电聚合物可制备具有相同或相似离子交换容量（IEC）的导电性和优异物理性能如断裂拉伸强度伸长率等的聚合物膜， 与以直链嵌段共聚物形式的常规离子导电聚合物相比，吸水率和/或尺寸变化程度相当。 由于具有这样优异的物理性能，聚合物膜可以用作燃料电池的膜 - 电极组件，并且包含其的分离膜的氧化还原液流电池可以表现出优异的电池性能并且甚至保持高的放电充电容量保持率 反复充放电多次。