Solvent-responsive behavior of inclusion complexes between amylose and polytetrahydrofuran.

Abstract:

:Highly crystalline amylose-polytetrahydrofuran (PTHF) complexes can be obtained by employing organic solvents as washing agents after complex formation. The X-ray diffraction (XRD) of the washed complexes appear sharp at 12.9°-13.2° and 19.6°-20.1°, clear signs of the presence of V6I -amylose. Other diffraction peaks correlate with V6II -amylose, which indicates that the complexed amylose helices are in the form of an intermediate or a mixture of V6I - and V6II -amylose. SEM imaging reveals that the amylose-PTHF complexes crystallize in the form of lamellae, which aggregate in a round shape on top of one another with a diameter around 4-8 μm. Some lamellas aggregate as flower-like or flat-surface spherulitic crystals. There is a visible matrix in between the aggregated lamellas which shows that a part of the amylose-PTHF complexes is amorphous.

journal_name

Macromol Biosci

authors

Rachmawati R,Woortman AJ,Loos K

doi

10.1002/mabi.201300174

subject

Has Abstract

pub_date

2014-01-01 00:00:00

pages

56-68

issue

1

eissn

1616-5187

issn

1616-5195

journal_volume

14

pub_type

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