We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Water vapor permeability and self‐cleaning properties of solvent‐free polyurethane improved by hollow nano‐TiO<sub>2</sub> spheres.
- Authors
Guo, Xu; Lyu, Bin; Gao, Dangge; Cheng, Kun; Ma, Jianzhong; Yang, Na; Yu, Yajin; Zhao, Shunhua; Shi, Lei; Kou, Mengnan
- Abstract
In the synthetic leather industry, solvent‐free polyurethane film (SFPU) was poor in water vapor permeability (WVP) and washability. In this study, we introduced the hollow nano‐TiO2 spheres (HNTSs) with high photocatalytic performance and permeability performance as well as large surface area into the SFPU film to endued its superior water vapor permeability property, self‐cleaning performance and water resistance. First of all, HNTSs were prepared via the controllable chemical route using HF for internal corrosion of solid nano‐TiO2 spheres, and then introduced into hydroxyl prepolymer to prepare solvent‐free polyurethane/HNTSs composite film. The results of SEM, FT‐IR and UV analyses indicated HNTSs were successfully dispersed evenly into SFPU. Application experiment results showed that the addition of HNTSs with hollow structure had an important effect on the WVP, photocatalytic performance, mechanical property, the water vapor transmission rate, self‐cleaning performance as well as tensile strength were increased by 111.98%, more than 100%, and 36.368%, respectively.
- Subjects
WATER vapor; PERMEABILITY; POLYURETHANES; SPHERES; LEATHER industry; TENSILE strength
- Publication
Journal of Applied Polymer Science, 2021, Vol 138, Issue 1, p1
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.49638