Construction of Superhydrophobic Poly (Lactic Acid)/Poly (Butylene Adipate‐Co‐Terephthalate) and Its Application in Yogurt Packing
Year: 2025
Type: article
Abstract: ABSTRACT This study systematically investigated the enhancement of the hydrophobic properties of poly (lactic acid)/poly (butylene adipate‐co‐terephthalate) (PLLA/PBAT) composite films by incorporating hydrophobic SiO2 nanoparticles at varying concentrations. Optimal performance was achieved with a 4% SiO2 coating, which formed a densely textured surface layer, increasing the water contact angle (WCA) from 73.9° to 152.6°, indicating a transition to superhydrophobicity. However, excessive SiO2 loading induced surface cracking, compromising structural integrity. Notably, the PLLA/PBAT/SiO2 films exhibited excellent elongation at break values. Furthermore, owing to the enhanced hydrophobicity, the yogurt residue on the PLLA/PBAT/SiO2 films was substantially reduced from 45.4% to 1.2% compared with that on commercial packaging materials. In addition, these films exhibited an oxygen permeability of 20 cm3/m2 day and provided an effective ultraviolet (UV) barrier. Overall, these biodegradable superhydrophobic PLLA/PBAT/SiO2 films demonstrate considerable potential for application in dairy packaging applications.
Source: Packaging Technology and Science
DOI: 10.1002/pts.2907
Authors: ZhongSheng Chen, Taizheng Tang, Linze Liu, Tao Wang, Jiatao Zhang, Xiaolong Xie, Tungalag Dong, Xueyan Yun
Institution: Inner Mongolia Agricultural University
Language: English
Subfield: Surfaces, Coatings and Films
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4410402425