- Title
- Characterization of starch films containing starch nanoparticles. Part 2: Viscoelasticity and creep properties
- Creator
- Shi, Aimin; Wang, Li-jun; Li, Dong; Adhikari, Benu
- Date
- 2013
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/62957
- Identifier
- vital:5254
- Identifier
-
https://doi.org/10.1016/j.carbpol.2012.10.064
- Identifier
- ISSN:0144-8617
- Abstract
- Starch films were successfully produced by incorporating spray dried and vacuum-freeze dried starch nanoparticles. The frequency sweep, creep-recovery behavior and time-temperature superposition (TTS) on these films were studied. All these films exhibited dominant elastic behavior (than viscous behavior) over the entire frequency range (0.1-100 rad/s). The incorporation of both types of starch nanoparticles increased the storage and loss modulus, tan δ, creep strain, creep compliance and creep rate at long time frame and reduced the recovery rate of films while the effect of different kinds of starch nanoparticles on these parameters was similar both in magnitude and trend. TTS method was successfully used to predict long time (over 20 days) creep behavior through the master curves. The addition of these nanoparticles could increase the activation energy parameter used in TTS master curves. Power law and Burger's models were capable of fitting storage and loss modulus (R2 > 0.79) and creep data (R2 > 0.96), respectively. © 2012 Elsevier Ltd. All rights reserved.; C1
- Relation
- Carbohydrate Polymers Vol. 96, no. 2 (2013), p. 602-610
- Rights
- Copyright Elsevier
- Rights
- This metadata is freely available under a CCO license
- Subject
- 0305 Organic Chemistry; 0601 Biochemistry and Cell Biology; Corn starch film; Creep-recovery behavior; Frequency sweep; Starch nanoparticles; Time-temperature superposition (TTS); Corn starch; Time temperature superposition; Activation energy; Creep; Digital storage; Nanoparticles; Recovery; Starch; Zea mays
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