本論文主要探討使用對環境友好的高親水性聚乙烯醇(PVA)作為反應物，而聚乙烯醇的聚合度為 500，在反應過程中加入不參與反應的小麥澱粉當作造孔劑，經過全糊化過程，再加入甲醛進行縮醛化交聯反應，最後加入催化劑硫酸加速反應，來製備多孔性聚乙烯醇縮甲醛泡棉(PVF Foam)。在本研究中，額外添加使用矽烷耦合劑改質過後的奈米級 Al2O3增加其研磨效果，而分析中主要探討添加與否對聚乙烯醇縮甲醛的影響，並觀察比較其對於物性與結構上造成的差異。由分析化性實驗結果發現，經由矽烷耦合劑改質過後的氧化鋁在 PVF Foam首先透過 XRD 進行分子結構的分析，但因晶格破壞的關係僅能依照特殊繞射峰來確定氧化鋁的存在性，便利用 FTIR 進行其官能基的分析，而後利用 S-NMR驗證其鋁離子在不同 pH 值下的型態，而後利用 SEM 觀察其結構表面，再利用EDS、ICP-MS 及 EDTA 反滴定法來量測其 PVF Foam 氧化鋁的含量。進行元素分析後發現 Al 與 Si 的存在的相對含量發現極為稀少，經由文獻可以歸納出以下關鍵點:氧化鋁的粉末大小為奈米級，容易自我團聚導致分散不均勻。過物性分析實驗結果發現，氧化鋁的混摻跟含水量、脫水速率並不影響，而對於 Instron 的結果可以發現，氧化鋁的混摻會使 PVF Foam 的 Modulus 略微提升與 Elogation 的下降。 The PVF Foam is a kind of soft and good flexibility material in the humidenvironment. The structure of PVF Foam belongs to high density and its pores arevery small, and also called as the high density foam. According to customerrequirement, these porous products are always cut into different sizes. It can beadopted to clean semi-conductor wafer in the post-CMP process, or used as thecleaning sponge on the car and kitchen market.In order to make the PVF Foam to be more wear-resistant, the nano-sizedaluminum oxide is intended to bridge into the PVA matrix in the present research, atwhich silane is also added to serve as the coupling agent. The present research focuseson the change of the hydrolysis structure of the aluminum oxide which pH dependent.The coupling effect performed by the silane to bridge PVA with aluminum oxide isconfirmed by the analyses of NMR, FTIR, XRD, EDS and ICP-MS. The physicalproperties of the present PVF products are also verified by SEM, TGA, DSC andInstron. The present results prove that the aluminum oxide can be bonded with PVAefficiently through the help of the added silane.
