Dialdehyde starch

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Dialdehyde starch
Dialdehyde starch.svg
Identifiers
ECHA InfoCard 100.127.976 OOjs UI icon edit-ltr-progressive.svg
MeSH Dialdehyde+starch
PubChem CID
Properties
(C6H8O5)n
AppearanceWhite, opaque crystals
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Dialdehyde starch is a polysaccharide derived by chemical modification from starch. It is prepared by periodate oxidation of starch. [1] As an aqueous dispersion, it can form a particle gel or a polymer network depending on preparation conditions. [2] Hydrolysis with sulfurous acid yields glyoxal and erythrose. [3]

It has found use in the paper industry, where in it has been shown to improve the wet strength of consumer products like toilet paper and paper towels. [4]

References

  1. ↑ Yu, Jiugao; Chang, Peter R.; Ma, Xiaofei (2010). "The preparation and properties of dialdehyde starch and thermoplastic dialdehyde starch". Carbohydrate Polymers. 79 (2): 296. doi:10.1016/j.carbpol.2009.08.005.
  2. ↑ Veelaert, S.; de Wit, D.; Gotlieb, K. F.; Verhé, R. (1997-02-01). "The gelation of dialdehyde starch". Carbohydrate Polymers. 32 (2): 131–139. doi:10.1016/S0144-8617(96)00160-9. ISSN   0144-8617.
  3. ↑ Wilham, C. A.; McGuire, T. A.; Cleve, J. W. Van; Otey, F. H.; Mehltretter, C. L. (2002-05-01). "Hydrolysis of Dialdehyde Starch. Glyoxal and Erythrose Production in Sulfurous Acid-Barium Sulfite Solutions". ACS Publications. doi:10.1021/i360001a014 . Retrieved 2026-01-24.
  4. ↑ USpatent 4001032,"Method of Making Nongelling Aqueous Cationic Dialdehyde Starch Compositions"
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