Integrated manufacturing of REciclable multi-material COmposites for the TRANSport sector
Synthesis and application of polyethyleneimine and polyethylene glycol grafted on CoFe2O4/single?walled carbon nanotubes as a delivery platform for silibinin: Loading experiments, modeling, and in?vitro release studies
Preparation process of CO2/O2 selective composite film and its application in equilibrium modified atmosphere packaging.AbstractA novel facilitated transport film was prepared by coating polyvinyl alcohol (PVA)/polyethylene glycol (PEG)/aminated sodium lignosulfonate on TiO2/ZnO?modified low?density polyethylene (LDPE). Monoethanolamine (MEA), diethanolamine (DEA), ethylenediamine (EDA), diethylenetriamine (DETA), tetramethylpiperidine amine (TEMP), and acrylamide (AM) were selected to modify sodium lignosulfonate (Ls) for enhancing the selectivity and permeability of CO2/O2. The fabricated Ls were characterized by fourier transform infrared (FTIR), thermogravimetric test (TG), and scanning electron microscopy (SEM). The CO2 permeability and CO2/O2 selectivity were improved with the increase in the amount of amine groups. Compared with the addition of Ls modified by alcohol amine, the composite film has higher selectivity to CO2 after the addition of DETA?Ls or TEMP?Ls. The selectivity of the 1:3:3EDA/MEA?Ls?g?AM composite film reached 13.7, and CO2 permeability increased by 5.54 times. The storage test also demonstrated that the composite films have better freshness retention ability. As a result, modified LDPE coated by PVA/PEG/aminated Ls has the potential as an active modified atmosphere packaging material.
» Publication Date: 15/03/2023
This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement Nº 768737
