A Long-Chain Alkylation of Dialdehyde Starch to Improve Its Thermal Stability and Hydrophobicity
Hydrophobic dialdehyde starch (HDAS) was synthesized by dialdehyde starch (DAS) and eighteen-alkyl primary amine as the raw material in DMSO. The effect of the reaction conditions on the yield of HDAS was investigated such as catalyst content, reaction temperature, reaction time, and the in-feed mol...
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doaj-52bfeb7a05c34c7b81cea1f7c69adc342020-11-24T22:35:57ZengHindawi LimitedJournal of Chemistry2090-90632090-90712016-01-01201610.1155/2016/60950236095023A Long-Chain Alkylation of Dialdehyde Starch to Improve Its Thermal Stability and HydrophobicityJiang Zhu0Zhaodong Wang1Haitao Ni2Xiang Liu3Jian Ma4Jianxin Du5Chongqing Key Laboratory of Environmental Materials and Remediation Technologies, ChongQing University of Arts and Sciences, Chongqing, ChinaCollege of Materials and Chemical Engineering, Chongqing University of Arts and Sciences, Chongqing, ChinaCollege of Materials and Chemical Engineering, Chongqing University of Arts and Sciences, Chongqing, ChinaCollege of Materials and Chemical Engineering, Chongqing University of Arts and Sciences, Chongqing, ChinaCollege of Materials and Chemical Engineering, Chongqing University of Arts and Sciences, Chongqing, ChinaCollege of Materials and Chemical Engineering, Chongqing University of Arts and Sciences, Chongqing, ChinaHydrophobic dialdehyde starch (HDAS) was synthesized by dialdehyde starch (DAS) and eighteen-alkyl primary amine as the raw material in DMSO. The effect of the reaction conditions on the yield of HDAS was investigated such as catalyst content, reaction temperature, reaction time, and the in-feed molar ratio of -CHO/-NH2. Moreover, the optimized test parameters were obtained by conducting orthogonal experiment. The molecular structure and the morphology of HDAS were characterized via Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM). And the thermal stability and the hydrophobic properties of HDAS were investigated by thermal gravimetric analyzer (TG) and the hydrophobic testing. The results indicate that the yield of HDAS is the highest up to 44.21%, with feed composition 1 : 0.9, reaction temperature 40°C, reaction time 8 h, and acetic acid content 3%. And the introduction of the long-chain alkyl groups into the DAS backbones will ameliorate efficaciously the thermal stability and the hydrophobic properties of DAS, which almost has no effect on the DAS particle size.http://dx.doi.org/10.1155/2016/6095023 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jiang Zhu Zhaodong Wang Haitao Ni Xiang Liu Jian Ma Jianxin Du |
spellingShingle |
Jiang Zhu Zhaodong Wang Haitao Ni Xiang Liu Jian Ma Jianxin Du A Long-Chain Alkylation of Dialdehyde Starch to Improve Its Thermal Stability and Hydrophobicity Journal of Chemistry |
author_facet |
Jiang Zhu Zhaodong Wang Haitao Ni Xiang Liu Jian Ma Jianxin Du |
author_sort |
Jiang Zhu |
title |
A Long-Chain Alkylation of Dialdehyde Starch to Improve Its Thermal Stability and Hydrophobicity |
title_short |
A Long-Chain Alkylation of Dialdehyde Starch to Improve Its Thermal Stability and Hydrophobicity |
title_full |
A Long-Chain Alkylation of Dialdehyde Starch to Improve Its Thermal Stability and Hydrophobicity |
title_fullStr |
A Long-Chain Alkylation of Dialdehyde Starch to Improve Its Thermal Stability and Hydrophobicity |
title_full_unstemmed |
A Long-Chain Alkylation of Dialdehyde Starch to Improve Its Thermal Stability and Hydrophobicity |
title_sort |
long-chain alkylation of dialdehyde starch to improve its thermal stability and hydrophobicity |
publisher |
Hindawi Limited |
series |
Journal of Chemistry |
issn |
2090-9063 2090-9071 |
publishDate |
2016-01-01 |
description |
Hydrophobic dialdehyde starch (HDAS) was synthesized by dialdehyde starch (DAS) and eighteen-alkyl primary amine as the raw material in DMSO. The effect of the reaction conditions on the yield of HDAS was investigated such as catalyst content, reaction temperature, reaction time, and the in-feed molar ratio of -CHO/-NH2. Moreover, the optimized test parameters were obtained by conducting orthogonal experiment. The molecular structure and the morphology of HDAS were characterized via Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM). And the thermal stability and the hydrophobic properties of HDAS were investigated by thermal gravimetric analyzer (TG) and the hydrophobic testing. The results indicate that the yield of HDAS is the highest up to 44.21%, with feed composition 1 : 0.9, reaction temperature 40°C, reaction time 8 h, and acetic acid content 3%. And the introduction of the long-chain alkyl groups into the DAS backbones will ameliorate efficaciously the thermal stability and the hydrophobic properties of DAS, which almost has no effect on the DAS particle size. |
url |
http://dx.doi.org/10.1155/2016/6095023 |
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