CAJ | 학술논문

采用流延成膜的方法制备了聚乙烯醇（PVA）／聚氨酯（PU）共混薄膜．当PU摩尔分数小于10％时，可得均一连续的共混膜．通过扫描电子显微镜（SEM）、原子力显微镜（AFM）、示差扫描量热仪（DSC）、拉伸测试及表面接触角测试等手段对PVA／PU共混膜的形貌及性能进行了研究．实验结果表明，PU可以与PVA形成分子间氢键，破坏了PVA分子内及分子间氢键，进而改善PVA薄膜的性能．
채용류연성막적방법제비료취을희순（PVA）／취안지（PU）공혼박막．당PU마이분수소우10％시，가득균일련속적공혼막．통과소묘전자현미경（SEM）、원자력현미경（AFM）、시차소묘량열의（DSC）、랍신측시급표면접촉각측시등수단대PVA／PU공혼막적형모급성능진행료연구．실험결과표명，PU가이여PVA형성분자간경건，파배료PVA분자내급분자간경건，진이개선PVA박막적성능．
A series of poly(vinyl glycol) (PVA)/polyurethane (PU) blend films were prepared by casting films from the polymer blend solutions. When PU mole content is lower 10%, the blend films are uniform and continuous. The surface morphologies of the polymer blend films were in- vestigated by scanning electron microscopy (SEM) and atomic force microscopy (AFM). Ther- mal, mechanical, and chemical properties of the polymer blend films were studied by differential scanning calorimetry (DSC), tensile tests, and surface contact angle tests. The results revealed that PU segments and PVA chains could form intermolecular hydrogen bonds, which damaged the intermolecular or intramolecular hydrogen bonds of PVA molecules and promoted the proper- ties of PVA films.