Exploring the effect of humidity on thermoplastic starch films using the quartz crystal microbalance

Please use this identifier to cite or link to this item: http://hdl.handle.net/10045/114173
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Title: Exploring the effect of humidity on thermoplastic starch films using the quartz crystal microbalance
Authors: Eaton, Matthew D. | Domene-López, Daniel | Wang, Qifeng | Montalbán, Mercedes G. | Martin-Gullon, Ignacio | Shull, Kenneth R.
Research Group/s: Residuos, Energía, Medio Ambiente y Nanotecnología (REMAN)
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Química | Universidad de Alicante. Instituto Universitario de Ingeniería de los Procesos Químicos
Keywords: Thermoplastic starch | QCM | Quartz crystal microbalance | Swelling | Humidity | Phase behavior
Knowledge Area: Ingeniería Química
Issue Date: 1-Jun-2021
Publisher: Elsevier
Citation: Carbohydrate Polymers. 2021, 261: 117727. https://doi.org/10.1016/j.carbpol.2021.117727
Abstract: The quartz crystal microbalance (QCM) is used as a non-destructive and efficient characterization tool for thin thermoplastic starch (TPS) films. Thin TPS films (1-2 μm) were prepared with 30% (w/w starch) plasticizers using either glycerol or an ionic liquid, 1-ethyl-3-methylimidiazolium acetate ([emim+][Ac¯]), as the plasticizer. The differences in the mechanical properties and environmental effects on the plasticized TPS films were explored. The modulus of starch-glycerol films was higher than starch-[emim+][Ac¯], consistent with literature data and bulk AFM measurements, likely due to superior plasticization by the ionic liquid. The starch-[emim+] [Ac¯] films were shown to have relative stable properties at low humidity that may be due to some antiplasticization effects at low water content despite absorbing more water than starch-glycerol films at higher humidity.
Sponsor: This work was supported by the National Science Foundation (NSF) (No. DMR-1710491) and by Financial Assistance Award No. 70NANB19H005 from the U.S. Department of Commerce, National Institute of Standards and Technology as part of the Center for Hierarchical Materials Design (CHiMaD). Additionally, this work made use of the SPID facility of Northwestern University’s NUANCE Center, which has received support from the SHyNE Resource (NSF ECCS-1542205), the IIN, and Northwestern’s MRSEC program (NSF DMR-1720139). We also acknowledge support from the US Department of Defense National Defense Science and Engineering Graduate (NDSEG) fellowship and support from the Richter Trust Funds. We also acknowledge support from Spain’s Ministry of Science (PID2019-108632RB-I00, CTQ2016-78246-R and FJCI-2016-28081).
URI: http://hdl.handle.net/10045/114173
ISSN: 0144-8617 (Print) | 1879-1344 (Online)
DOI: 10.1016/j.carbpol.2021.117727
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2021 Published by Elsevier Ltd.
Peer Review: si
Publisher version: https://doi.org/10.1016/j.carbpol.2021.117727
Appears in Collections:INV - REMAN - Artículos de Revistas

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