【作者】 孙平川； 徐璐； 李宝会； 陈铁红； 金庆华； 丁大同；

【Author】 Sun Pingchuan~1 Xu Lu~2 Li Baohui~2 Chen Tiehong~1 Jin Qinghua~2 Ding Datong~2 1 Key Laboratory of Functional Polymer Materials,Ministry of Education.College of Chemisty, 2 Department of Physics,Nankai University,Tianjin 300071

【机构】 功能高分子材料教育部重点实验室,化学学院,南开大学； 物理系,南开大学；

【摘要】 <正>将不同的聚合物经熔融或溶液等方法共混可以获得性能优异的多组分聚合物材料,共混物中不同组分间的相容性是影响材料最终性能的关键因素。通过不同高分子间形成氢键相互作用是制备在分子水平上高度相容共混物的有效途径,高分子链间氢键作用目前也广泛应用更多还原

【Abstract】 Polymer blends have received substantial attention in the past decade due to their unique physical and chemical properties.Miscibility of different polymer segments is the key factor that controls the final properties of the blend.Hydrogen-bonding interaction is known to be a crucial interaction to prepare miscible polymer blends.However,till now,no direct experimental evidence at molecular level has been obtained concerning the polymer-polymer hydrogen bonds in previous reported work.Recently,novel solid state NMR methods have been proposed including continuous phase modulation technique for proton-proton homonuclear dipolar decoupling and dipolar recouping.Combining with the dipolar recouping method,high resolution and high sensitivity ~1H NMR spectrum can be obtained by using these new NMR techniques.These novel NMR techniques have become a powerful method for probing proton-proton proximities and have provided much insight into the solid-state structures of various materials.更多还原