聚偏二氟乙烯（PVDF）/聚甲基丙醯酸甲酯（PMMA）為相容性極高，而且一般在融態時，被視為是互溶的高分子。本研究以乾式成膜程序，配製緻密形態的薄膜。利用場放射電子顯微鏡（FESEM），調頻微分掃描熱卡計（M-DSC）、及寬角度X光繞射（XRD）探討PVDF與PMMA摻混系統之熱性質與相行為。發現其玻璃轉移溫度有很大的，互相靠近的偏移。摻合體中PMMA玻璃轉移溫度，出現熱行為的鬆弛現象。摻合體薄膜在低於PMMA的玻璃轉化溫度下，約50oC的環境進行退火。隨退火時間的增長，熱行為的鬆弛顯出趨緩的現象。隨著PMMA含量增加，寬角度X光繞射的分析，證實聚偏二氟乙烯結晶形態由α形態轉變成受PMMA存在的影響，成為無晶形態。 Poly(vinylidene fluoride)（PVDF）/Poly(methyl methacrylate)（PMMA）are two compatible polymers, and are miscible in melt state. This study concerns the preparation of thin film from the PVDF/PMMA solution blends by drying method. By using FESEM, modulated DSC, and XRD we investigate their thermal properties and phase morphology. The glass transition temperature is found to be close to each other. And it is found that there exists a thermal relaxation near the glass transition of PMMA. The annealing beneath the glass transition diminishes a little the relaxation. PMMA content increase proves to decrease the crystallinty of PVDF in the blends.
