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수용성 절삭유에서 첨가제가 방부제의 항균효능에 미치는 영향 원문보기
(The) Effect of additives on antimicrobial activity of biocide in water-soluble cutting fluid

  • 저자

    김현주

  • 학위수여기관

    慶尙大學校 大學院

  • 학위구분

    국내석사

  • 학과

    화학공학과

  • 지도교수

  • 발행년도

    2004

  • 총페이지

    vii, 59p.

  • 키워드

    수용성 절삭유 첨가제 방부제 항균효능 화학공학;

  • 언어

    kor

  • 원문 URL

    http://www.riss.kr/link?id=T10061398&outLink=K  

  • 초록

    Water-soluble cutting fluid is used to provide lubricity, cooling and corrosion inhibition during cutting or grinding process, especially in operations which cooling is important. However, water-soluble cutting fluid provides excellent environments for the growth of a large variety of microoganisms, causing deterioration of the fluids, corrosion of workpieces, appearance of slime and generation of foul odors. To control microbial contamination, biocides have been used for many years. But additives in water-soluble cutting fluid can interact with biocide in a number of ways in which its antimicrobial activity can be affected. In this work, the effect of additives (corrosion inhibitors and emulsifiers) on antimicrobial activity of biocides was investgated using the Pseudomonas aeruginosa which frequency of occurrence in contaminated fluids is very high and its growth and survival is excellent. When a biocide was used with a corrosion inhibitor, its antimicrobial activity was affected by the corrosion inhibitor used. The antimicrobial activity of Kathon 886 MW was increased when corrosion inhibitor (each of SS 510, MEA) was used. Triadine 3, Triadine 10, and Grotan BK showed the similar trend of antimicrobial effect for the corrosion inhibitors used. Their antimicrobial activities were increased when the corrosion inhibitor such as CP-105, CP-E-7 and MEA was used individually. The antimicrobial activity of biocide was also affected by the emulsifier added. The antimicrobial activity of Kathon 886 MW decreased when emulsifier (each of PEG, TW) was used. Triadine 3 was not affected by emulsifiers used. The antimicrobial activity of Triadine 10 decreased when the emulsifier (each of NP-5, TW) was used, and that of Grotan BK decreased when the emulsifier (each of PEG, CA) was used. The antimicrobial activity of each corrosion inhibitor was also compared. The results showed that CP-E-7 and MEA were bioresistant and the other corrosion inhibitors were biosupportive. All emulsifiers were biosupportive. The antimicrobial activity of biocides was in the order of Triadine 10


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