In:
New Journal of Chemistry, Royal Society of Chemistry (RSC), Vol. 46, No. 31 ( 2022), p. 14849-14858
Abstract:
Newly obtained amphiphilic glycosilicones are based on commercially available maltodextrins of various molecular weights (dextrose equivalent (DE) = 16.5–19.5 and 4–7) and hydride-terminated polydimethylsiloxane ( M w = 900). These carbohydrate polymers were synthesized via catalytic hydrosilylation employing Karstedt's catalyst, performed in benzene, between protected (by acetylation) and then modified (by allylation) maltodextrins with the hydride-terminated polydimethylsiloxane followed by deprotection. The block-copolymeric structure of the thus obtained glycosilicones was confirmed by 1 H, 13 C{ 1 H}, and 29 Si{ 1 H} NMR spectroscopy. The carbohydrate polymers are soluble in water ( 〈 15 mg mL −1 ) and, in aqueous solutions, they form micelles, vesicles, and other aggregates with hydrodynamic radii spanning from 8 to 113 nm – as determined by dynamic light scattering, sedimentation experiments, and SEM. Titration calorimetry of glycosilicones based on maltodextrin demonstrates the critical micelle concentration of 13 mg mL −1 ( ca. 10 −3 mol L −1 ); these values are similar to those obtained for the commonly used alkylglucoside surfactants.
Type of Medium:
Online Resource
ISSN:
1144-0546
,
1369-9261
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
1472933-7
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