2026-06-27T23:04:51Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/67142023-08-26T20:35:49Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Aldas, Miguel
author
Pavon, Cristina
author
López-Martínez, Juan
author
Arrieta Dillon, Marina Patricia
2023-06-16T15:27:19Z
2023-06-16T15:27:19Z
2020
2076-3417
10.3390/app10072561
https://hdl.handle.net/20.500.14352/6714
https://doi.org/10.3390/app10072561
https://www.mdpi.com/2076-3417/10/7/2561
Fully bio-based materials based on thermoplastic starch (TPS) were developed starting from corn starch plasticized with glycerol. The obtained TPS was further blended with five pine resin derivatives: gum rosin (GR), disproportionated gum rosin (dehydroabietic acid, RD), maleic anhydride modified gum rosin (CM), pentaerythritol ester of gum rosin (LF), and glycerol ester of gum rosin (UG). The TPS–resin blend formulations were processed by melt extrusion and further by injection moulding to simulate the industrial conditions. The obtained materials were characterized in terms of mechanical, thermal and structural properties. The results showed that all gum rosin-based additives were able to improve the thermal stability of TPS, increasing the degradation onset temperature.
The carbonyl groups of gum rosin derivatives were able to interact with the hydroxyl groups of starch and glycerol by means of hydrogen bond interactions producing a significant increase of the glass transition temperature with a consequent stiffening effect, which in turn improve the overall mechanical performance of the TPS-resin injected moulded blends. The developed TPS–resin blends are of interest for rigid packaging applications.
eng
Atribución 3.0 España
Pine Resin Derivatives as Sustainable Additives to Improve the Mechanical and Thermal Properties of Injected Moulded Thermoplastic Starch
journal article
URL
https://docta.ucm.es/bitstreams/a0c7905c-021e-4620-9c82-ec386bf1fa70/download
File
MD5
442ae3a5da30f0d30e2f94521bdb09a9
5657275
application/pdf
applsci-10-02561.pdf