Synthesis and Characterization of Nonionic Waterborne Polyurethane and Application to Wool Fabric Finishing

A nonionic waterborne polyurethane(WPU) was synthesized by the self-emulsification method using polyether diol (N220), isophorone diisocyanate (IPDI), trimethylolpropane poly (ethylene glycol monomethyl ether) (N120), 1,4-butanediol (BDO) and trimethylolpropane (TMP) as the main materials. The effec...

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Bibliographic Details
Published in:Journal of Wuhan University of Technology. Materials science edition 2024-04, Vol.39 (2), p.497-505
Main Authors: Yin, Yingting, Feng, Mao, Yao, Jinbo, Niu, Jiarong
Format: Article
Language:English
Subjects:
Butanediol
Chemistry and Materials Science
Diisocyanates
Emulsions
Ethylene glycol
Materials Science
Organic Materials
Polyurethane resins
Wool
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Summary:A nonionic waterborne polyurethane(WPU) was synthesized by the self-emulsification method using polyether diol (N220), isophorone diisocyanate (IPDI), trimethylolpropane poly (ethylene glycol monomethyl ether) (N120), 1,4-butanediol (BDO) and trimethylolpropane (TMP) as the main materials. The effects of the NCO/OH ratio on the emulsion and film properties of NWPU were explored. The experimental results show that the NWPU prepared at an NCO/OH ratio of 1.1 has good emulsion stability and easy film formation, and the resultant film was elastic, soft, and transparent. The sample was used for wool finishing and the application performance was evaluated. When the NWPU dosage reached 40 g·L −1 , the fabric area felt shrinkage rate reduced from 8.97% to 4.75%, the pilling rating raised from grade 2–3 to grade 4, and the whiteness value only decreased by 3.87%.
ISSN:1000-2413
1993-0437
DOI:10.1007/s11595-024-2905-7