PP-g-MA와 EBA-GMA가 PLA/PBS 블렌드의 인장강도 및 열적 특성에 미치는 영향

다국어 초록 (Multilingual Abstract)

This study investigates the enhancement of mechanical and thermal properties in polylactic acid (PLA) and polybutylene succinate (PBS) blends, both biodegradable polymers, through the incorporation of PP-g-MA and EBA-GMA as compatibilizers. PLA, known for its excellent mechanical strength, and PBS, valued for its high flexibility, exhibit poor compatibility, which weakens cohesion in their blends. To mitigate this issue, varying amounts (0.25–5 phr) and ratios of the two compatibilizers were applied, both individually and in combination. The PLA/PBS blends were analyzed through thermal analysis, rheological property measurements, tensile testing, and structural evaluation. The results revealed that the combined addition of PP-g-MA and EBA-GMA significantly improved blend compatibility and mechanical strength, achieving optimal tensile strength and the lowest loss tangent at 0.75 phr. These improvements are attributed to enhanced interfacial adhesion and reduced phase separation. This research offers critical insights into the mechanical property enhancement and broader application potential of PLA/PBS-based blends.

목차 (Table of Contents)

• 1. 서론 1
• 2. 실험 및 방법 4
• 2. 1 실험 재료 4
• 2. 2 시편 제조 8
• 2. 2. 1 PLA/PBS/상용화제 블렌드 제조 11
• 2. 2. 2 PLA/PBS/상용화제 Film 제조 12
• 2. 2. 3 PLA/PBS/상용화제 Rectangular specimen 제조 13
• 2. 3 분석 14
• 2. 3. 1 PLA/PBS/상용화제 Film 인장 특성 분석 14
• 2. 3. 2 PLA/PBS/상용화제 Film 열적 특성 분석 15
• 2. 3. 3 PLA/PBS/상용화제 Film 구조 분석 16
• 2. 3. 4 PLA/PBS/상용화제 Blends 유변학적특성 분석 17
• 2. 3. 5 PLA/PBS/상용화제 Rectangular specimen 점탄성 분석 18
• 2. 3. 6 PLA/PBS/상용화제 Film 미세구조 분석 19
• 3. 결과 및 고찰 20
• 3. 1 인장 특성 20
• 3. 2 구조 분석 26
• 3. 2. 1 XRD 26
• 3. 2. 2 FT-IR 29
• 3. 3 열적 특성 32
• 3. 4 유변학적 특성 36
• 3. 5 점탄성 41
• 3. 6 미세구조 특성 44
• 4. 결론 46
• 5. 참고문헌 48
• ABSTRACT 52