The effects of chitin/chitosan nanowhiskers on the thermal, mechanical and dye adsorption properties of electrospun PVA nanofibrous membranes

Poly(vinyl alcohol) (PVA) nanofibrous membranes (NFMs) containing various contents of α-chitin nanowhiskers (CtNWs) or chitosan nanowhiskers (CsNWs) were fabricated via electrospinning. The CtNWs were extracted by acid hydrolysis of chitin obtained from shrimp shells. The CsNWs were prepared by surf...

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Bibliographic Details
Published in:Cellulose (London) 2020-07, Vol.27 (10), p.5771-5783
Main Authors: Kim, Su Jun, Hong, Bo Min, Park, Won Ho
Format: Article
Language:English
Subjects:
Adsorption
Bioorganic Chemistry
Ceramics
Chemistry
Chemistry and Materials Science
Chitin
Chitosan
Composites
Electron microscopes
Electron microscopy
Field emission microscopy
Glass
Membranes
Methylene blue
Microscopy
Natural Materials
Organic Chemistry
Original Research
Physical Chemistry
Physical properties
Polymer Sciences
Polyvinyl alcohol
Spectrophotometry
Surface chemistry
Sustainable Development
Thermogravimetric analysis
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Summary:Poly(vinyl alcohol) (PVA) nanofibrous membranes (NFMs) containing various contents of α-chitin nanowhiskers (CtNWs) or chitosan nanowhiskers (CsNWs) were fabricated via electrospinning. The CtNWs were extracted by acid hydrolysis of chitin obtained from shrimp shells. The CsNWs were prepared by surface deacetylation of CtNWs by alkaline treatment. The CtNWs and CsNWs were characterized using transmission electron microscopy and X-ray diffractometry. The morphological and structural analyses of the PVA NFMs containing CtNWS or CsNWs were conducted by field emission scanning electron microscopy and attenuated total reflectance infrared spectroscopy. Also, the physical properties of the NFMs were investigated using thermogravimetric analysis and texture analyzer. The adsorption capacity toward cationic methylene blue of the PVA NFMs with CtNWs or CsNWs was evaluated using UV–Vis spectrophotometry, and it was found that the electrostatic repulsive force due to the surface positive charges of CtNWs and CsNWs reduced the adsorption performance.
ISSN:0969-0239
1572-882X
DOI:10.1007/s10570-020-03191-w