公开(公告)号：US20180240959A1

公开(公告)日：2018-08-23

申请号：US15957921

申请日：2018-04-20

申请人： University-Industry Cooperation Group of Kyung Hee University

发明人： Kap Jin KIM ,  Sol Jee LEE ,  Anand Prabu Arun ,  Sathiyanathan Ponnan

IPC分类号： H01L41/08 ,  D01D5/00 ,  H01L41/113 ,  D04H1/4326 ,  D01F6/62 ,  D04H1/728 ,  D01D1/02 ,  B29C47/00 ,  B29K509/00 ,  B29L31/34 ,  B29L31/00 ,  B29C47/08 ,  B29K67/00

CPC分类号： D04H1/728 ,  B29C48/022 ,  B29C48/08 ,  B29C48/142 ,  B29C48/146 ,  B29C48/267 ,  B29K2067/046 ,  B29K2509/00 ,  B29K2995/0003 ,  B29L2031/3406 ,  B29L2031/753 ,  D01D1/02 ,  D01D5/003 ,  D01F6/625 ,  D04H1/4326 ,  H01L41/1132 ,  H01L41/193 ,  H01L41/45

摘要： A method of producing a piezoelectric nanofiber web, includes: dissolving polylactic acid in a solvent, thus preparing a spinning solution; and electrospinning the spinning solution, yielding a nanofiber web, wherein at least 80% of a monomer for the polylactic acid comprises an L-isomer or a D-isomer, and wherein the solvent is a mixture comprising chloroform and one of N,N-dimethylacetamide(DMAc), N,N-dimethylformamide(DMF) and dimethylsulfoxide(DMSO).

公开(公告)号：US20160190427A1

公开(公告)日：2016-06-30

申请号：US14979512

申请日：2015-12-27

申请人： University-Industry Cooperation Group of Kyung Hee University

发明人： Kap Jin KIM ,  Sol Jee LEE ,  Anand Prabu Arun ,  Sathiyanathan Ponnan

IPC分类号： H01L41/08 ,  B29C47/00 ,  D04H1/728 ,  H01L41/113

CPC分类号： D04H1/728 ,  B29C48/022 ,  B29C48/08 ,  B29C48/142 ,  B29C48/146 ,  B29C48/267 ,  B29K2067/046 ,  B29K2509/00 ,  B29K2995/0003 ,  B29L2031/3406 ,  B29L2031/753 ,  D01D1/02 ,  D01D5/003 ,  D01F6/625 ,  D04H1/4326 ,  H01L41/1132 ,  H01L41/193 ,  H01L41/45

摘要： Disclosed are a nanofiber web piezoelectric material and a method of producing the same, wherein a spinning solution of polylactic acid (PLA) in a solvent is electrospun, yielding a nanofiber web, thereby exhibiting piezoelectric properties without additional drawing. This piezoelectric material is remarkably cost-effective, can exhibit superior piezoelectric properties, can be used to manufacture inexpensive piezoelectric products, and obviates any additional drawing because the PLA chain is drawn during electrospinning. The drawing force induced by a high electric field between the needle and the collector enables the formation of 31 helical β-crystal chains in a uniaxial direction even without any other drawing process. This PLA nanofiber web is very thin and flexible, the PLA chains are effectively aligned in an electric field direction due to the high DC voltage used for electrospinning, and helical β conformation is easily formed in a single process using electrospinning.

摘要翻译： 公开了一种纳米纤维网状压电材料及其制造方法，其中在溶剂中的聚乳酸（PLA）的纺丝溶液是电纺丝的，产生纳米纤维网，从而在没有另外的拉伸的情况下表现出压电性能。 这种压电材料是非常有成本效益的，可以表现出优异的压电性能，可以用于制造便宜的压电产品，并且避免了在静电纺丝期间拉伸PLA链的任何额外的拉伸。 由针和收集器之间的高电场引起的拉伸力使得能够在单轴方向上形成31个螺旋和双晶链，即使没有任何其它拉伸工艺。 这种PLA纳米纤维网非常薄且柔韧，由于用于静电纺丝的高直流电压，螺旋和双绞线，PLA链在电场方向上有效对准。 在使用静电纺丝的单一工艺中容易形成构象。