Vinyl acetate奈米複合材料之研究

A STUDY OF Vinyl acetate-CLAY NANOCOMPOSITES

吳俊璋(chun-chang wu)

指導教授 ： 廖義田

國立臺北科技大學/工程學院/有機高分子研究所/碩士(2010年)

摘要

奈米科技是近幾年開發的新領域，結合高分子材料所形成的奈米複合材料
是奈米材料發展應用的一個重要方向。
實驗中以活性自由基聚合反應來製備Clay奈米複合材料，利用自行合成的4-(N,N-Diethyldithiocarbamylmethyl)benzyltrimethylammoniu改質劑，將蒙脫土(pk-802)改質，使蒙脫土達到剝離的狀態，再將Nylon高分子溶於甲苯和加入改質過的蒙脫土，經Compoundy、Injection、Molding，可發現抗拉強度有提升的趨勢，並以XRD證明其結構，熱性質部份藉由微差掃描熱分析儀(DSC)來測定，當加入的Clay達5%時在機械性質上有最佳的表現
本實驗亦設計添加不同比例的蒙脫土（pk-802）於高分子（PU及PC）中，以溶劑溶之，在固定溫度下成膜，得到奈米複合材料，再探討其機械性質及熱性質。
另外，本研究也針對polyacrylic acid及Nylon6高分子分別形成奈米複合材料，經過compounding與compression molding，發現clay的增加，使PC及polyactide的伸張強度及Tg有極大之增加。

關鍵字

奈米複合材料

並列摘要

In the study, Nylon6 site are synthesized by ATRP. A new living free radical polymerization is used to exofoliate the Montmorillonite (PK802).The Montmorillonite are treated by 4-(N,N-Diethyl dithiocarbamyl methyl)benzyltrimethylammonium bromide. The Montmorillonite are exofolided by X-ray measurement(XRD).
Finally, theolyacrylic acid clay nanocomposite are mixed with Nylon6 by twin-crew extruder. Theyare molded into test specimens by compression molding. It is found the tensile strengths increase almost twice of its original value when the clay content is 5 wt％ of the composites.,the thermal properties increase significantly after adding the clay. The thermal properties of Nylon6 nanocomposite were investigated by DSC measurement.
Nanocomposites of PU-Clay、PC-Clay are studied in this research.

並列關鍵字

Nanocomposites

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