Zuo, Y.; He, X.; Li, P.; Li, W.; Wu, Y. Preparation and Characterization of Hydrophobically Grafted Starches by In Situ Solid Phase Polymerization. Polymers2019, 11, 72.
Zuo, Y.; He, X.; Li, P.; Li, W.; Wu, Y. Preparation and Characterization of Hydrophobically Grafted Starches by In Situ Solid Phase Polymerization. Polymers 2019, 11, 72.
Zuo, Y.; He, X.; Li, P.; Li, W.; Wu, Y. Preparation and Characterization of Hydrophobically Grafted Starches by In Situ Solid Phase Polymerization. Polymers2019, 11, 72.
Zuo, Y.; He, X.; Li, P.; Li, W.; Wu, Y. Preparation and Characterization of Hydrophobically Grafted Starches by In Situ Solid Phase Polymerization. Polymers 2019, 11, 72.
Abstract
Three kinds of hydrophobic groups grafted starches of maleic anhydride grafted starch (MAH-g-starch), lactic acid grafted starch (LA-g-starch), and methyl acrylate grafted starch (MA-g-starch) were prepared by in-situ solid phase polymerization. The results of Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) were confirmed successful grafting. The grafting ratios of MAH-g-starch, LA-g-starch and MA-g-starch were 6.50%, 12.45%, and 0.57%, respectively. Influenced by the grafting ratio, LA-g-starch had the best hydrophobic properties and the largest molecular weight, and those for MA-g-starch was the worst. The surfaces of grafted starches were covered with graft polymer, with obvious surface roughness and bond degree of MAH-g-starch and LA-g-starch. The crystalline structure of grafted starches showed some damage, with LA-g-starch exhibiting the greatest decrease in crystallinity, and less of a change for MA-g-starch. Overall, the grafting reaction improved thermoplasticity, with LA-g-starch the most improved, followed by MAH-g-starch, and then MA-g-starch.
Chemistry and Materials Science, Polymers and Plastics
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