Study on the Preparation of PU/HBP-NH2 Blend Film and Its Properties

作者：Ren Longfang^*; Wang Na; Wang Xuechuan

来源：Journal of Applied Polymer Science, 2015, 132(5): 41383.

DOI：10.1002/app.41383

• blends
• coatings
• composites
• hydrophilic polymers
• X-ray

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.

• 出版日期2015-2-5
• 单位陕西科技大学