Miscibility and morphology of kefiran/waterborne polyurethane blend films

Biodegradable blends of kefiran with various contents (10-40 wt%) of waterborne polyurethane were successfully synthesized via the casting method. When waterborne polyurethane content is lower than 30 wt%, good compatibility and miscibility were observed; otherwise, phase separation occurs between t...

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Published in:International journal of food properties 2018-01, Vol.20 (sup3), p.S2764-S2775
Main Authors: Rad, Fatemeh Hedayati, Sharifan, Anousheh, Asadi, Gholamhassan
Format: Article
Language:English
Subjects:
Biodegradability
blend film
Differential scanning calorimetry
Fourier transforms
Kefiran
mechanical property
miscibility
Moisture absorption
Permeability
Polyurethane
Scanning electron microscopy
water resistance
Water vapor
waterborne polyurethane
X-ray diffraction
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description Biodegradable blends of kefiran with various contents (10-40 wt%) of waterborne polyurethane were successfully synthesized via the casting method. When waterborne polyurethane content is lower than 30 wt%, good compatibility and miscibility were observed; otherwise, phase separation occurs between them. These phenomena can be attributed to intermolecular interactions, which were confirmed by Fourier transform infrared, X-ray diffraction, differential scanning calorimetry analysis, and scanning electron microscopy. Compared with kefiran film, the blends increased in thickness, tensile strength, elongation at break, yellowness, and opacity when the waterborne polyurethane content was increased. Meanwhile, the water vapor permeability and moisture absorption significantly decreased (p 
doi_str_mv 10.1080/10942912.2017.1373664
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source Taylor & Francis Open Access
subjects Biodegradability
blend film
Differential scanning calorimetry
Fourier transforms
Kefiran
mechanical property
miscibility
Moisture absorption
Permeability
Polyurethane
Scanning electron microscopy
water resistance
Water vapor
waterborne polyurethane
X-ray diffraction
title Miscibility and morphology of kefiran/waterborne polyurethane blend films
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