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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Main Authors: Jiang Zhu, Zhaodong Wang, Haitao Ni, Xiang Liu, Jian Ma, Jianxin Du
Format: Article
Language:English
Published: Hindawi Limited 2016-01-01
Series:Journal of Chemistry
Online Access:http://dx.doi.org/10.1155/2016/6095023
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spelling 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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