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Modification of Starch via the Biginelli Multicomponent Reaction
Author(s) -
Esen Eren,
Meier Michael A. R.
Publication year - 2020
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201900375
Subject(s) - biginelli reaction , vanillin , benzaldehyde , starch , urea , chemistry , organic chemistry , plasticizer , ethyl acetoacetate , gel permeation chromatography , glycerol , molar ratio , thiourea , polymer chemistry , catalysis , polymer
An efficient and straightforward modification of starch using renewable and commercially available aromatic aldehydes (benzaldehyde, vanillin, and p ‐anisaldehyde) and urea via the Biginelli multicomponent reaction is reported in this work. First, starch acetoacetate ( SAA ) with a degree of substitution ranging from 1.4 to 2.5, depending on the reaction time or the molar ratio of reactants, is prepared. SAA is then modified with different aromatic aldehydes and urea via the Biginelli reaction. The modified products are characterized by ATR‐IR, NMR, and gel permeation chromatography (GPC). The processability of the products is also investigated using a hot press instrument, revealing that glycerol is a suitable and renewable plasticizer for the Biginelli products.