Please use this identifier to cite or link to this item: http://cmuir.cmu.ac.th/jspui/handle/6653943832/58198
Title: Mechanical properties improvement of thermoplastic corn starch and polyethylene-grafted-maleicanhydride blending by Na<sup>+</sup>ions neutralization of carboxymethyl cellulose
Authors: Kittisak Jantanasakulwong
Somchai Wongsuriyasak
Pornchai Rachtanapun
Phisit Seesuriyachan
Thanongsak Chaiyaso
Noppol Leksawasdi
Charin Techapun
Keywords: Biochemistry, Genetics and Molecular Biology
Issue Date: 1-Dec-2018
Abstract: © 2018 Elsevier B.V. Corn starch was melt-blended with glycerol (70/30) to prepare thermoplastic starch (TPS) at 140 °C for 10 min. The TPS was melt-blended with polyethylene grafted with maleic anhydride (PE-MAH) and carboxymethyl cellulose (CMC) to improve the properties of the TPS. Phase determination analysis and SEM images demonstrated that the morphology of the TPS/PE-MAH/CMC blend consisted of PE-MAH particles dispersed in the TPS matrix. The tensile strength and elongation were found to have improved with the addition of CMC 5 wt%. Adhesion between the polymers was observed by the asymmetric double-cantilever beam (ADCB) method. The PE-MAH/(TPS + CMC) sample showed high fracture toughness (Gc), which is related to the adhesion energy between the two polymers. This is suggestive of interactions between the MAH groups of PE-MAH and CMC. FT-IR results indicated that the neutralization and aggregation were formed by Na+ions of CMC and the MAH of PE-MAH, which increased the interfacial adhesion between TPS and PE-MAH blend. The improvement in the mechanical properties of the TPS/PE-MAH/CMC blend is concluded to be because of the increase in the interfacial adhesion between TPS and PE-MAH by these neutralization and aggregation processes.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85052147281&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/58198
ISSN: 18790003
01418130
Appears in Collections:CMUL: Journal Articles

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