Effect of dip coating polymer solutions on properties of thermoplastic cassava starch

Effect of dip coating polymer solutions on properties of thermoplastic cassava starch

© 2019 by the authors. Thermoplastic starch (TPS) was prepared by melt-mixing cassava starch with glycerol. Polyethylene (PE), polyethylene-grafted-maleic anhydride (PE-MAH) and poly(lactic acid) (PLA) solutions at 2% (w/v) were used to coat TPS using the dip coating process. The tensile strength of...

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Bibliographic Details
Main Authors: Kittisak Jantanasakulwong, Nattagarn Homsaard, Phanurot Phengchan, Pornchai Rachtanapun, Noppol Leksawasdi, Yuthana Phimolsiripol, Charin Techapun, Pensak Jantrawut
Format: Journal
Published: 2020
Subjects:
Chemistry
Materials Science
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85075564900&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/67678
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Institution: Chiang Mai University
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Summary:© 2019 by the authors. Thermoplastic starch (TPS) was prepared by melt-mixing cassava starch with glycerol. Polyethylene (PE), polyethylene-grafted-maleic anhydride (PE-MAH) and poly(lactic acid) (PLA) solutions at 2% (w/v) were used to coat TPS using the dip coating process. The tensile strength of TPS increased with the dip coating solution technique, especially for PLA coating. Swelling index, water-soluble matter and water droplet contact angle confirmed the water resistant improvement of TPS by PE-MAH and the PLA dip coating solution. Plasticizer bleeding was found in uncoated TPS after storage, but not in the coated TPS. Coating TPS with PE-MAH and PLA improved the tensile properties, water resistance and conquered plasticizer bleeding problems in TPS.

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