Nguyen, T. M., Lim, Y. W., Shiong Choo, S. S., & Jana, S. (2023). Macromolecular benzylidene malonates with low migration profiles for food-packaging applications. Polymer, 264, 125564. https://doi.org/10.1016/j.polymer.2022.125564
Abstract:
Benzylidene malonates constitute an important commercialized class of light stabilizers
that are able to inhibit undesired photodegradation in polymers and plastics. However, the
benzylidene malonate type of structures has yet to be FDA-approved for food-contact applications
due to migration issues. Herein we report the design, synthesis and migration studies of three
macromolecular benzylidene malonates (MBMs 1-3) by varying their structures, molecular weight
and chemical composition. All MBMs were characterized with nuclear magnetic resonance
spectroscopy, thermo-gravimetric analysis, photodegradation resistance property, resistance to
yellowing upon UV exposure and migration studies using five different food simulants. Notably,
the migration profiles of all MBMs are improved in comparison to the low molecular weight
benzylidene malonate BM-4. The performance of MBM-3 synthesized by anchoring benzylidene
malonate units to a poly(ethylene-co-acrylic acid) backbone against migration and
photodegradation is the best amongst our three products and on par or better than the one of
Uvinul® 3030 – an FDA-approved light stabilizer for food contact applications.
License type:
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
Funding Info:
This research is supported by core funding from: A*STAR Institute of Chemical and Engineering Sciences (ICES)
Grant Reference no. :