금속 나노입자가 분산된 나노 코팅액의 저온 코팅 및 표면 활성 특성 연구

다국어 초록 (Multilingual Abstract)

In this study, a novel low-temperature surface treatment process was developed using nano-coating solutions containing uniformly dispersed metal nanoparticles based on silver (Ag) and copper (Cu). The primary objective was to establish a versatile coating method applicable to a wide range of substrates—including textiles, polymeric films, and cellulose-based papers—while maintaining high dispersion stability and surface adhesion at temperatures below 100 °C. To achieve this, the colloidal stability of Ag and Cu nanoparticles was optimized through surface modification and the use of polymeric dispersants, preventing agglomeration and ensuring homogeneous nanoparticle distribution within the coating matrix. The coated surfaces exhibited pronounced surface plasmon resonance (SPR) effects originating from the collective oscillation of free electrons in the metal nanoparticles. These SPR-induced electronic oscillations promoted the generation of reactive oxygen species (ROS), particularly superoxide anions, which interacted with cationic contaminants such as odor-causing molecules and microbial cell walls. This mechanism led to effective antibacterial and deodorizing performance under ambient light conditions. Moreover, the application of external energy sources, such as visible or infrared irradiation and moderate heat, amplified the plasmonic resonance, thereby significantly enhancing catalytic and functional activity. Characterization analyses, including UV–Vis spectroscopy, FT-IR, and surface morphology observations, confirmed the uniformity of nanoparticle distribution and the stability of the coated layers. The proposed approach enables multifunctional surface coatings that are not only effective at low temperatures but also environmentally benign, avoiding the use of toxic solvents or high-temperature sintering processes. The findings of this study demonstrate the feasibility of an eco-friendly, low-energy nano-coating platform that offers broad applicability across antibacterial, deodorizing, and anti-contamination technologies, with potential scalability to industrial-level roll-to-roll manufacturing.

목차 (Table of Contents)

• Ⅰ. 서론 1
• 1. 연구 배경 1
• 2. 연구 필요성 5
• 3. 국내·외 연구 동향 8
• Ⅱ. 이론적 배경 13
• 1. 금속 나노입자의 일반적 특성 13
• 1.1 나노입자의 크기 효과 13
• 1.2 양자 구속 효과(Quantum Confinement Effect) 15
• 1.3 벌크 금속과 나노 금속의 차이 17
• 1.4 소결 및 응용적 관점에서의 의미 19
• 2. 표면 플라즈몬 공명(Surface Plasmon Resonance, SPR) 20
• 3. 활성산소종(ROS)생성 메커니즘 23
• 3.1 SPR 기반 ROS 생성 24
• 3.2 ROS의 종류와 특성· 24
• 3.3 ROS의 세포 독성 메커니즘 25
• 3.4 SPR과 ROS의 상관성 25
• 3.5 응용 분야 26
• 4. 은(Ag)나노 입자의 항균 메커니즘 26
• 5. 구리(Cu)나노 입자의 항균 메커니즘 27
• 6. 저온 코팅 공정 29
• Ⅲ. 실험 재료 및 방법 31
• 3.1 실험 재료 및 장치 31
• 3.1.1 개요 31
• 3.1.2 실험 재료 31
• 3.1.3 실험 장치 34
• 3.2 실험 방법 38
• 3.2.1 표면 활성 평가 실험 38
• 3.2.2 미세구조 및 표면 특성 분석 실험 39
• 3.2.3 기계적/내구 특성 실험 40
• 3.2.4 항균/소취 특성 실험 41
• Ⅳ. 실험 결과 및 고찰 43
• 4.1 표면 활성 평가 실험 43
• 4.2 미세구조 및 표면 특성 분석 실험 47
• 4.3 기계적/내구 특성 실험 49
• 4.4 항균/소취 특성 실험 51
• Ⅴ. 결론 54
• Ⅵ. 참고문헌 56