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Effects of Chemical Etching and Functionalization Times on the Properties of Cu/Polyimide Films
성기수,황수민,이창민,김원,이승묵,박근철,정승부,임준형,주진호 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.57 No.61
We fabricated flexible Cu/Polyimide (PI) films by electroless- and electro-Cu plating on surface modified PI via chemical etching and functionalization, and investigated the effects of the modification time on the contact angle, surface energy and morphology, Pd catalyst amount on PI, and resultant peel strength between Cu/PI layers. Chemical etching and successive functionalization were performed on PI surfaces for 0 - 10 min, followed by electroless- and electro-Cu plating. Chemical etching effectively modified the PI surface from a hydrophobic to a hydrophilic state. In addition, chemical functionalization significantly increased the amount of Pd absorption on PI, which consequently enhanced the peel strength between Cu/PI. The peel strength of the resulting Cu/PI film processed by both chemical etching and functionalization for 5 min increased to 5.08 N/cm, which was 4.2 and 2.8 times higher than films processed with functionalization and etching alone, respectively. The highest strength that was achieved was a result of the combined effects of the increased work of adhesion and the increased Pd amount for both treatments; however, the amount of Pd was likely to be the more critical factor for the high level of adhesion between Cu/PI, rather than the work of adhesion.
대학의 과학기술교육 어디로 가나 - "굴뚝산업의 IT화"에 총력을
성기수,Seong, Gi-Su 한국과학기술단체총연합회 2000 과학과 기술 Vol.33 No.12
한국은 거국적으로 힘을 모았을때 올림픽에서 4위를 한 경험이 있다. 미국의 중흥을 도운 30년대의 댐계획, 40년대의 원자탄 개발, 70년대의 아폴로 프로젝트처럼 국론통일 바탕위의 국가경제 기사회생 프로젝트로서 "굴뚝산업의 IT화"에 우리 산ㆍ학ㆍ관이 힘을 모으면 지금의 난국은 돌파될 것으로 본다. IT혁명과 교육입국 백년대계를 위하여 발상의 대전환이 절실히 요구된다.