Modification Strategies and Film Fabrication of CO

Poly-(propylene carbonate phthalate) (PPC-P) is a promising biodegradable material exhibiting excellent gas barrier properties; however, its inherent brittleness limits its practical applications. To address this limitation, we prepared and systematically investigated a series of PPC-P/poly-(ethylene oxide) (PEO) blends and PPC-P/PEO/ADR composites. Comprehensive characterization was performed by using tensile testing, scanning electron microscopy, differential scanning calorimetry, thermogravimetric analysis (TGA), gas permeability analysis, and contact angle measurements. The results demonstrate that PEO incorporation substantially enhances the ductility of PPC-P, albeit at the expense of reduced tensile strength and compromised gas barrier performance. Through the addition of ADR4468 and optimization of the composition to PPC-P:PEO/ADR4468 = 92 wt %:8 wt %:0.6 wt %, we achieved an optimal balance of mechanical properties, yielding a tensile strength of 20.13 MPa coupled with an exceptional elongation at break of 407.63%. Notably, the ADR4468-modified composite exhibited superior barrier properties, with measured permeabilities of 4592 cm