The study aimed to enhance the properties of polylactic acid (PLA), a biodegradable and biocompatible substitute for fossil-based plastics. Since the applicability of PLA has been limited because of its toughness and brittleness, microfibrillated cellulose (MFC) and propolis were introduced into PLA. As a result, the PLA film with MFC/propolis showed significant improvements in mechanical strength, elongation, and storage modulus, while also experiencing a decrease in the glass transition temperature. Additionally, the presence of polyphenols in propolis led to a reduction in light transmittance in the UV wavelength range. These enhancements are attributed to MFC tightly bonding with PLA polymers, and propolis acting as a plasticizer and mediator between MFC and PLA, preventing agglomeration. These reinforced PLA films have the potential to be used in flexible packaging for light-sensitive products.
목차
Abstract 서론 재료 및 방법 1. 재료 2. 방법 결과 및 고찰 1. 기계적 및 물리적 특성 분석 2. FTIR 3. 수분 투과도 4. 열안정성 5. UV 투과도 결론 감사의 글 사사 참고문헌