Rapid and environmentally friendly preparation of starch esters

被引：98

作者：

Biswas, Atanu ^{[1
]}

Shogren, R. L. ^{[1
]}

Selling, Gordon ^{[1
]}

Salch, J. ^{[1
]}

Willett, J. L. ^{[1
]}

Buchanan, Charles M. ^{[2
]}

机构：

[1] USDA ARS, Natl Ctr Agr Utilizat Res, Plant Polymer Res Unit, Peoria, IL 61604 USA

[2] Eastman Chem Co, Res Labs, Kingsport, TN 37662 USA

来源：

CARBOHYDRATE POLYMERS | 2008年 / 74卷 / 01期

关键词：

starch iodine; acetic anhydride; starch acetate; microwave; synthesis;

D O I：

10.1016/j.carbpol.2008.01.013

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The effects of microwave heating and reactant composition on the iodine-catalyzed acetylation of starch by acetic anhydride were investigated. After only 2 min at 100 degrees C, significant amounts of acetylation occurred using small amounts of iodine (0.16-2.5 mol%). Values of degree of substitution (DS) increased as iodine/starch and acetic anhydride/starch ratios increased. Starch acetates having DS of up to 3 were prepared using 2.5 mol% iodine. Molecular weights decreased as iodine levels increased. This method of starch acetylation is attractive since no solvent is needed, reaction is rapid, energy inputs are relatively small, and the catalyst has low toxicity. Published by Elsevier Ltd.

引用

页码：137 / 141

页数：5

共 7 条

[1] Rapid preparation of starch maleate half-esters
Biswas, A
Shogren, RL
Kim, S
Willett, JL
[J]. CARBOHYDRATE POLYMERS, 2006, 64 (03) : 484 - 487
[2] Solvent-free process to esterify polysaccharides
Biswas, A
Shogren, RL
Willett, JL
[J]. BIOMACROMOLECULES, 2005, 6 (04) : 1843 - 1845
[3] Iodine catalyzed esterification of cellulose using reduced levels of solvent
Biswas, Atanu
Selling, Gordon
Appell, Michael
Woods, Kristen K.
Willett, J. L.
Buchanan, Charles M.
[J]. CARBOHYDRATE POLYMERS, 2007, 68 (03) : 555 - 560
[4] Novel modified soybean oil containing hydrazino-ester: synthesis and characterization
Biswas, Atanu
Sharma, Brajendra K.
Willet, J. L.
Vermillion, K.
Erhan, Sevim Z.
Cheng, H. N.
[J]. GREEN CHEMISTRY, 2007, 9 (01) : 85 - 89
[5] Determination of the degree of substitution of acetylated starch by hydrolysis, 1H NMR and TGA/IR
Elomaa, M
Asplund, T
Soininen, P
Laatikainen, R
Peltonen, S
Hyvärinen, S
Urtti, A
[J]. CARBOHYDRATE POLYMERS, 2004, 57 (03) : 261 - 267
[6] Rapid preparation of starch esters by high temperature/pressure reaction
Shogren, RL
[J]. CARBOHYDRATE POLYMERS, 2003, 52 (03) : 319 - 326
[7] Preparation of starch esters
Tessler, MM
Billmers, RL
[J]. JOURNAL OF ENVIRONMENTAL POLYMER DEGRADATION, 1996, 4 (02): : 85 - 89

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