UV-Mediated Facile Fabrication of a Robust, Fully Renewable and Controllably Biodegradable Poly(lactic acid)-Based Covalent Adaptable Network

ACS Macro Letters, Journal Year: 2024, Volume and Issue: 13(9), P. 1112 - 1118

Published: Aug. 12, 2024

A robust and fully biobased covalent adaptable network (CAN) that allows recyclability, biocompatibility, controlled biodegradability is reported. The CAN was fabricated through a simple photo-cross-linking method, wherein low-molecular-weight poly(lactic acid) (∼3 kDa) modified with end 1,2-dithiolane rings one-step Steglich esterification reaction thioctic acid (TA). These incorporated undergo photoinduced ring-opening polymerization, thus enabling the cross-linking of abundant dynamic disulfide bonds. resultant demonstrates excellent transparency, effective UV-blocking capabilities below 320 nm, tensile strength (∼39 MPa), superior dimensional stability at 80 °C, alongside attractive biocompatibility. Moreover, owing to exchange redox-responsiveness bonds, material can be recycled by hot-pressing reduction–oxidation process while also being capable controllably biodegrading its lifecycle. Furthermore, it exhibits reconfigurable shape memory properties fast recovery. This study elucidates straightforward approach fabricating multifunctional sustainable polymer materials potential applications in diverse fields such as packaging, coating, biomedicine.

Language: Английский

Enhanced properties of novel canola meal nanocomposite packaging films reinforced with cellulose nanocrystals and glycidyl methacrylate

Food Packaging and Shelf Life, Journal Year: 2025, Volume and Issue: 49, P. 101511 - 101511

Published: April 29, 2025

Language: Английский