IONIC CONDUCTIVITY MEASUREMENT DEVICE OF ELECTROLYTE MEMBRANE

    公开(公告)号:US20180202970A1

    公开(公告)日:2018-07-19

    申请号:US15861998

    申请日:2018-01-04

    Abstract: An ionic conductivity measurement device of an electrolytic membrane includes a humidification chamber configured to accommodate an ion-conductive electrolytic membrane and having concave grooves respectively formed at both sides thereof which face the electrolytic membrane to form a measurement space for measuring ionic conductivity of the electrolytic membrane; a plurality of channels formed at a bottom surface of each of the concave grooves; a gas distribution unit detachably coupled to each of the concave grooves with the electrolytic membrane being interposed therebetween; and a plurality of electrodes provided in contact with one side of the electrolytic membrane and supported by the gas distribution unit, the plurality of electrodes being disposed side by side to measure an impedance of the electrolytic membrane.

    METHOD FOR PREPARING POLY(L-LACTIC ACID) COMPOSITE

    公开(公告)号:US20180179331A1

    公开(公告)日:2018-06-28

    申请号:US15717212

    申请日:2017-09-27

    CPC classification number: C08G63/08 G01N25/4866

    Abstract: Disclosed is a method for preparing a poly(L-lactic acid) composite. According to the method, PLLA can be processed without losing its physical properties during thermal processing and can be effectively used to manufacture a final product with improved thermal properties. In addition, the monomer is not thermally decomposed during high-temperature polymerization. Therefore, the poly(L-lactic acid) composite can be prevented from browning. Also disclosed is a poly(L-lactic acid) composite prepared by the method.

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