Abstract
AbstractA series of soybean oil‐based polyols were synthesized via the reaction between epoxidized soybean oil and 1,3‐propanediol, trimethylolpropane and xylitol, respectively. The aqueous polyurethanes were synthesized by prepared soybean oil‐based polyols. The effect of hydroxyl value of soybean oil‐based polyols on the mechanical, thermal, hydrophobic properties of the aqueous polyurethane films were also investigated. The results showed that the OH value of polyol increased, the Tg of aqueous polyurethane films increased from 30.04 to 88.28 °C and the water contact angle of materials improved from 80.80° to 98.20°. Besides, water absorption reduced from 40.25% to 2.40%. Also, all samples were placed in the 1 wt% sodium hydroxide solution at 45 °C to test the degradation behaviors. After 24 h, the results demonstrated that aqueous polyurethane synthesized by the highest hydroxyl value(251.00mgKOH/g)polyol had the lowest degradation rate(7.10%). Finally, the mechanical properties and morphology of the aqueous polyurethane film after degradation were investigated, which proved that the hydroxyl value affected the mechanical properties and morphology of the aqueous polyurethane film after degradation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
