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Open AccessArticle

Preparation and Characterization of Hydrophobically Grafted Starches by In Situ Solid Phase Polymerization

College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, Hunan, China
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Polymers 2019, 11(1), 72; https://doi.org/10.3390/polym11010072
Received: 19 November 2018 / Revised: 22 December 2018 / Accepted: 29 December 2018 / Published: 5 January 2019
(This article belongs to the Special Issue Biodegradable and Biobased Polyesters)
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) 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 relative hydrophobicity and the largest molecular weight, and those for MA-g-starch were 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. View Full-Text
Keywords: corn starch; maleic anhydride; lactic acid; methyl acrylate; hydrophobic modification; in situ solid phase polymerization corn starch; maleic anhydride; lactic acid; methyl acrylate; hydrophobic modification; in situ solid phase polymerization
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MDPI and ACS Style

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.

AMA Style

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(1):72.

Chicago/Turabian Style

Zuo, Yingfeng; He, Xiaoyu; Li, Ping; Li, Wenhao; Wu, Yiqiang. 2019. "Preparation and Characterization of Hydrophobically Grafted Starches by In Situ Solid Phase Polymerization" Polymers 11, no. 1: 72.

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