Preparation and characterization of waterborne polyurethaneurea composed of C9-diol-based polyester polyol |
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| Authors: | Yun Zhu Chun Pu Hu |
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| Affiliation: | (1) Shanghai Key Laboratory of Advanced Polymeric Materials, East China University of Science and Technology, Shanghai, 200237, People’s Republic of China;(2) Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, People’s Republic of China;(3) School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, People’s Republic of China; |
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| Abstract: | A series of polyurethaneurea (PUU) aqueous dispersions were prepared with C9-diol-based polyester polyol (POA) and/or poly(neopentylene
adipate) polyol (PNA). The particle size and viscosity of the PUU aqueous dispersions consisting of POA were close to those
of a comparable system prepared with PNA, and the high-temperature stability and freeze–thaw stability for all the aqueous
dispersions were excellent. The PUU film prepared only with the POA exhibited the lowest water-absorbing amount, the highest
tensile strength (51.3 MPa), and the best hydrolytic stability across all PUU films studied. The experimental results also
showed a high degree of hydrogen bonding for urea groups and a perfect, ordered structure of hard segments in this kind of
PUU film, resulting in excellent water-resistance performance and mechanical properties. |
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