Investigation of Reactive Compatibilization on Degradable Poly(lactic acid)/Poly(butylene adipate‐co‐terephthalate) Blends with Lysine Diisocyanate

Macromolecular Chemistry and Physics, Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

Abstract Biodegradable poly(lactic acid)/poly(butylene adipate‐co‐terephthalate) (PLA/PBAT) blends have poor compatibility, and reactive compatibilization is the most effective approach to improve their compatibility. In this study, lysine diisocyanate (LDI) employed as a compatibilizer interfacial interactions within PLA/PBAT at various ratios (30/70, 50/50, 70/30). The effects of LDI on mechanism, thermodynamic behavior, mechanical properties, phase morphology are thoroughly investigated. Fourier Transform Infrared Spectroscopy (FTIR) analysis shows that react with carboxyl terminal group PLA PBAT form copolymers, which serve chemical bridge between two phases. Thermodynamics behaviors show reduces crystallization rate crystallinity blends. Mechanical property studies prove significantly improves comprehensive properties blends, elongation break, elastic modulus, tensile strength optimal for 2 wt.%. Impact even exceeds 90kJ m −2 (50/50) above wt.% LDI. studied by Scanning Electron Microscopy (SEM) addition can emulsify two‐phase interface, change sea‐island structure into co‐continuous one, affinity components.

Language: Английский

Synthesis, hydrolysis and repolymerization of multiblock crystalline low-melting-point poly (1,5-pentylene terephthalate)-poly (ethylene glycol) aromatic copolyesters

Polymer, Journal Year: 2025, Volume and Issue: 328, P. 128463 - 128463

Published: April 30, 2025

Language: Английский