Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8943755 | International Journal of Biological Macromolecules | 2018 | 5 Pages |
Abstract
Corn starch was melt-blended with glycerol (70/30) to prepare thermoplastic starch (TPS) at 140â¯Â°C for 10â¯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 5â¯wt%. Adhesion between the polymers was observed by the asymmetric double-cantilever beam (ADCB) method. The PE-MAH/(TPSâ¯+â¯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.
Related Topics
Life Sciences
Biochemistry, Genetics and Molecular Biology
Biochemistry
Authors
Kittisak Jantanasakulwong, Somchai Wongsuriyasak, Pornchai Rachtanapun, Phisit Seesuriyachan, Thanongsak Chaiyaso, Noppol Leksawasdi, Charin Techapun,