Characterization of starch films containing starch nanoparticles. Part 2: Viscoelasticity and creep properties

► Starch films showed dominant elastic behavior (than viscous behavior) in 0.1-100 rad/s range. ► Addition of starch nanoparticle increased storage and loss moduli, loss angle of starch films. ► Starch nanoparticles increased creep strain, compliance and rate but reduced recovery rate. ► TTS predicted higher activation energy in long-term creep of films containing nanoparticles. ► Power law and Burger's models predicted the frequency sweep and creep behavior data well.