마이크로피브릴화 셀룰로오스 (MFC)/프로폴리스 첨가 PLA 필름 제조 및 특성 분석

초록

The study aimed to enhance the properties of polylactic acid (PLA), a biodegradable and biocompatible sub- stitute 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.

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