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用 ATR-FT-IR和 XPS研究了聚氨酯脲以及聚二甲基硅氧烷 (PDMS)改性聚氨酯脲的表面组成和结构 ,发现与空气接触面和与模板接触面含有的 PDMS和聚四亚甲基醚 (PTMO)软段浓度远远大于其本体浓度 ,并且与空气接触面比与模板接触面含有更多的 PDMS和 PTMO段。将聚氨酯脲水合至 3个星期 ,其表面组成和氢键未发生任何变化。
The surface composition and structure of polyurethane urea and polydimethylsiloxane (PDMS) modified polyurethane urea were studied by ATR-FT-IR and XPS. It was found that the contact surface with the air and PDMS and poly The concentration of soft segment of methyl ether (PTMO) is far greater than its bulk concentration and contains more PDMS and PTMO segments than the contact surface with air and template interface. Hydration of polyurethane urea to 3 weeks, the surface composition and hydrogen bonds did not change anything.