一種含銀及奈米碳管之導電薄膜、銀/奈米碳管複合物、及一種分散奈米碳管之方法

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

101124297

專利證號

I 506652

專利獲證名稱

一種含銀及奈米碳管之導電薄膜、銀/奈米碳管複合物、及一種分散奈米碳管之方法

專利所屬機關 (申請機關)

國立臺灣大學

獲證日期

2015/11/01

技術說明

本發明為合成一新穎性高分子材料(聚醚胺與dianhydride經二段加熱法合成)。其組成份(poly(oxyethylene)-imide (POE-imide))具新穎性。此有機材料可用於分散銀粒子與奈米碳管於水中及有機溶劑中。除此之外，此POE-imide可作為一還原劑還原金屬離子成粒子，故新組成之POE-imide@Ag@CNT材料被開發。透過此有機材料，不僅大幅提升CNTs在溶液中的分散性且使銀離子被還原成銀粒子(nanometer scale in diameter)，均勻且穩定地分布在CNTs上，進一步經過熱處理後(>150 oC)，可得到表面具導電性(>100 S/cm)之薄膜。另外，此POE-imide@Ag@CNT溶液亦可經由離心及抽乾方式得到單一之AgNPs@CNTs複合物或paste，並可再分散至水或有機溶劑中。此方式合成之AgNPs@CNTs因POE-imide為雙性性質，可直接分散於有機溶劑中並與多種成膜性高分子相容，應用於新穎抗菌材料、機能性紡織品、塗料、醫療材料、加工導電基材及零組件材料等高附加價值產品。 Nanohybrids of silver nanoparticles (AgNPs) decorated on the surface of multiwalled carbon nanotubes (Ag@MWNT) were synthesized via the in situ reduction of AgNO3 in N, N-dimethylformamide (DMF). The process required the presence of a poly(oxyethylene)-imide (POE-imide) copolymer, which promoted dispersion of the MWNTs and reduced the Ag+ to Ag0. AgNPs 8–30 nm in diameter were generated and some of these were directly attached to the MWNT surfaces, as observed by transmission electron microscopy (TEM). In the absence of the copolymer, AgNO3 can only be reduced by DMF slowly to deposit an Ag0 mirror on the side of the reactor wall. By simple coating on glass slide and heating to 170 oC, the mixture of Ag@MWNT in the POE-imide/DMF medium turned into a milky film, which subsequently was shown to have a high electric conductivity (2 x 103 S/cm). The presence of the MWNTs provided an entangled surface for supporting the AgNPs melt at low temperature.

備註

本部(收文號1110015008)同意該校111年3月16日校研發字第1110018536號函申請終止維護專利(國立臺灣大學)

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