Interface interaction and compatibility molecular dynamics verification of Scutellaria baicalensis Georgi extracts/PBS dyeing and antibacterial composites

Scutellaria baicalensis Georgi extracts (SBGE) have the dyeing and antibacterial component and could provide poly(butylene succinate) (PBS) functionality. Isopropyl tri (dioctylpyrophosphate) titanate (NDZ-201) was used to improve the compatibility of the two-phases by utilizing Ti-O-C bonds to obtain SBGE+N/PBS bifunctional composites. The results indicated that the mixing energy (E _mix) and Huggins parameters (χ) of the SBGE+N/PBS composites were close to 0, and the cohesive energy density and solubility parameter (δ) were larger than those associated with SBGE/PBS composites. When the NDZ-201 reached 2.0%, the thermal performance of the composite exceeded that of PBS, and the mechanical properties reached theirmaximum value. With an increase in the amount of NDZ-201, the degradation and antibacterial rate increased.