Study on the preparation of PU/HBP‐NH2 blend film and its properties |
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| Authors: | Ren Longfang Wang Na Wang Xuechuan |
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| Affiliation: | 1. Key Laboratory of Chemistry and Technology for Light Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Shaanxi Xi'an, China;2. Shaanxi Research Institute of Agricultural Products Processing Technology, Shaanxi University of Science and Technology, Shaanxi Xi'an, China |
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| Abstract: | The blend films of polyurethane (PU) and amino‐terminal hyperbranched polymers (HBP‐NH2) were prepared successfully by mixing HBP‐NH2 solution and PU. The rate of moisture absorption and mechanical properties were determined. The results showed that the rates of moisture absorption and vapor permeability were improved from 0.34% to 7.51% and from 161 gm?2 d?1 to 879 gm?2 d?1, respectively. The addition of HBP‐NH2 is helpful to improve the hygiene properties of PU films. Then, the structures of the blend films were characterized by IR, XRD, TG, and SEM at the same time. The results indicated that HBP‐NH2 and PU had hydrogen‐bond interaction and a certain phase separation. The blend films had good heat stability. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 41383. |
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| Keywords: | blends coatings composites hydrophilic polymers X‐ray |
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