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Korean Journal of Metals and Materials > Volume 54(9); 2016 > Article
Korean Journal of Metals and Materials 2016;54(9): 681-687. doi: https://doi.org/10.3365/KJMM.2016.54.9.681
전해 동박의 표면 형상 및 기계적 물성에 미치는 SPS 첨가제 영향
우태규
전북대학교 공과대학 신소재공학부
The Effects of Bis(3-Sulfo-Propyl)di-Sulfide (SPS) Additives on the Surface Morphology and Mechanical Properties of Electrolytic Copper Foil
Tae-Gyu Woo
Division of Advanced Materials Engineering, College of Engineering, Chonbuk National University, Jeonbuk 54896, Republic of Korea
Correspondence  Tae-Gyu Woo ,Tel: 82-63-219-5357, Email: goodman@jbnu.ac.kr
Received: 13 October 2015;  Accepted: 29 March 2016.  Published online: 5 September 2016.
ABSTRACT
In this study the effects of Bis(3-Sulfo-Propyl)di-Sulfide (SPS) on the elongation, surface morphology and crystal structure of electrolytic copper foil were investigated. Additives HEC (hydroxyethyl cellulose) (A), SPS(B), Coll-A(C) were used in the study, and the additive used as D was a Cl- ion. The study results show that there are large differences in surface roughness and elongation depending on the amount of SPS added, from 0 ppm ~ 40 ppm. In this study, it was verified that the SPS additive plays the role of an accelerating agent, and makes it possible to control grain sizes. Also, the elongation rate increased, with increasing amounts of SPS. In addition, it was determined that SPS improves both the grain size and elongation rate due to its effect on the crystal structure. The addition of 40 ppm SPS resulted in a low surface roughness of less than 1 μm, and the sample showed both low tensile strength and large grain size. Here, the elongation was 9.0%, which represents an increase in elongation of about 300% compared to not adding the additive SPS.
Keywords: electroplating, copper, organic additive, elongation, surface morphology
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