RT Journal Article
T1 Pine Resin Derivatives as Sustainable Additives to Improve the Mechanical and Thermal Properties of Injected Moulded Thermoplastic Starch
A1 Aldas, Miguel
A1 Pavon, Cristina
A1 López-Martínez, Juan
A1 Arrieta Dillon, Marina Patricia
AB 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.
PB MDPI
SN 2076-3417
YR 2020
FD 2020
LK https://hdl.handle.net/20.500.14352/6714
UL https://hdl.handle.net/20.500.14352/6714
LA eng
NO Ministerio de Economía y Competitividad (MINECO)
NO Universidad Complutense de Madrid /Banco de Santander
NO Generalitat Valenciana
NO Ministerio de Economía y Competitividad (MINECO)
DS Docta Complutense
RD 7 abr 2025