“…However, the low oxygen-barrier property (Ghadermazi, Hamdipour, Sadeghi, Ghadermazi, & Asl, 2019;Hay, et al, 2018; Y. F. , high production energy consumption (Zhang, et al, 2013), and high price of HPMC (Allenspach, Timmins, Sharif, & Minko, 2020) pose strong limits for its applications. To cope with the property limitations of individual polymers, achieve enhanced and/or new material properties, reduce costs, and to expand applications, mixing different polymers is one of the most cost-effective methods (Aghjeh, Khonakdar, & Jafari, 2015;Botaro, de Freitas, do Carmo, & Raimundo, 2020;Jéssica Bassi da Silva, Michael Thomas Cook, & Bruschi, 2020;Xu, Wang, & Shi, 2020). Hydroxypropyl starch (HPS), a typical chemically modified starch with some original hydroxyl groups replaced with hydroxypropyl groups, is cheaper than HPMC, show excellent gas barrier property, and has been widely used in the food industry, therefore being an ideal substitute for part of HPMC (X.…”