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Deep eutectic solvents as simultaneous plasticizing and crosslinking agents for starch.

Abstract：

:The aim of this work was to prepare deep eutectic solvents (DES) made with choline salts with α-hydroxylate anions and glycerol and apply them as starch plasticizers. Additionally, crosslinking potential of polyfunctional anions from the salts was investigated. Starch/DES premixtures were rheologically and thermally (DSC, TGA) analyzed. Thermoplastic starch (TPS)/DES films were prepared via thermocompression molding. Influence of choline salt to glycerol molar ratio, type of anion and compression parameters on mechanical, dynamic mechanical, thermal and sorption properties as well as structural morphology (XRD, FTIR analysis) was studied. DES containing citrate anion exhibited parallel crosslinking and plasticizing ability of polysaccharide matrix as applied techniques confirmed. The higher choline citrate (CCit) content in DES the higher tensile strength, more amorphous structure and lower sorption degree to CCit:G 1:6 M ratio. XRD revealed that TPS/CCit-based DES films did not retrograde even after one year of storage. The best compression parameters for studied systems were: 140 °C, 12 tons, 10 min.

journal_name

Int J Biol Macromol

journal_title

International journal of biological macromolecules

authors

Zdanowicz M,Jędrzejewski R,Pilawka R

doi

10.1016/j.ijbiomac.2019.02.103

subject

Has Abstract

pub_date

2019-05-15 00:00:00

pages

1040-1046

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(18)36838-7

journal_volume

129

pub_type

杂志文章

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