Synthesis and Characterization of Biopolyol-Based Waterborne Polyurethane Modified through Complexation with Chitosan

In this study, a series of castor oil-based anionic waterborne polyurethane (CWPU) systems, which it has been suggested may be suitable for use as green elastomers with diverse applications in films and coatings, was prepared by modified with O-carboxymethyl chitosan (CS) as not only a reinforcing f...

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Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2022-03, Vol.12 (7), p.1143
Main Authors: Choi, Soon-Mo, Lee, Sunhee, Shin, Eun-Joo
Format: Article
Language:English
Subjects:
Aqueous solutions
Biocompatibility
Castor oil
Catalysts
Chemical synthesis
Chitosan
Elastomers
Emulsion polymerization
Fibroblasts
High temperature
Humidity
Infrared spectroscopy
Light scattering
Loss modulus
Mechanical properties
Methyl ethyl ketone
Nanocomposites
Penicillin
Photon correlation spectroscopy
Polyurethane
Polyurethane resins
Prepolymers
Raw materials
reinforcement
Scanning electron microscopy
Solvents
Tensile properties
Thermal stability
Viscosity
VOCs
Volatile organic compounds
waterborne polyurethane
Zeta potential
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Summary:In this study, a series of castor oil-based anionic waterborne polyurethane (CWPU) systems, which it has been suggested may be suitable for use as green elastomers with diverse applications in films and coatings, was prepared by modified with O-carboxymethyl chitosan (CS) as not only a reinforcing filler, but a chain-extender of polyurethane prepolymer to enhance the properties of polyurethanes. Moreover, not only was the system obtained with castor oil-based polyol in the absence of a catalyst, but it was maintained with low viscosity by using acetone instead of toxic methyl ethyl ketone (MEK) during the synthesis process. The sizes, zeta potential, chemical formation, and morphology of the CWPU-CS composites had been investigated by dynamic light scattering (DLS), infrared spectroscopy (IR), and scanning electron microscopy (SEM). Moreover, the results show that the modification allows to enhance storage/loss modulus, tensile properties, thermal stability at high temperature, and biocompatibility of CWPU and CWPU/CS nanocomposites according to various contents of CS.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano12071143