(聚乙烯醇、聚乙烯卡坐)/蒙脫土奈米複合材料之合成與性質研究

Preparation and Properties of Poly (vinyl alcohol)-Clay as well as Poly (vinyl carbazole)-Clay Nanocomposite Materials

林靜宜(Ching-Yi Lin)

指導教授 ： 葉瑞銘

中原大學/理學院/化學研究所/碩士(2002年)

https://doi.org/10.6840/cycu200200087

摘要

本研究可分為兩部份，第一部份為Poly（vinyl alcohol）/黏土（Clay）的有機/無機奈米複合材料，合成是由vinyl acetate單體和無機層狀之蒙脫土以熱聚合法藉由2,2-Azobis-isobutyronitrile當氧化劑，來進行聚合。本文研究使用的Clay為鈉型蒙脫土，為了讓蒙脫土能夠與PVA混成，將鈉型的蒙脫土改質為親油性的蒙脫土。在研究中所合成之產物利用FTIR、XRD、TEM、SEM及POM以進行結構之鑑定。並且在研究中發現不同比例PVA / Clay的奈米複合材料其熱性質隨著黏土含量增加而增加（由DSC及TGA之觀察）。複合材料所製備之薄膜其光學透光度會隨著黏土含量之增加而降低。
第二部份為Poly (vinyl carbazole) / Clay的奈米複合材料，合成是由vinyl carbazole單體和無機層狀之蒙脫土以光聚合法藉由Triarylsulfonium Hexafluoro antimonate salts當光起始劑，來進行聚合。本文研究使用的Clay亦為鈉型蒙脫土，為了讓蒙脫土能夠與PVK混成，將鈉型的蒙脫土改質為親油性的蒙脫土。在研究中所合成之產物利用FTIR、XRD、TEM、POM以進行結構之鑑定。並且在研究中發現不同比例PVK / Clay的奈米複合材料其熱性質雖會因黏土的添加會降低，但也因為黏土含量增加而提昇（由DSC及TGA之觀察）。所製備出複合材料由POM觀察其結構上的變化，發現添加黏土會造成晶核的現象。

關鍵字

聚乙烯卡坐 ； 聚乙烯醇

並列摘要

This thesis can be divided into two parts. For the first part , a series of poly(vinyl alcohol)–clay nanocomposites （PCN）were prepared by dispersing the nanolayers of inorganic montmorillonite （MMT）clay into organic poly(vinyl alcohol) matrix via the in-situ thermal polymerization. The as-synthesized poly(vinyl alcohol) / montmorillonite （MMT）clay nanocomposites were subsequently characterized by FTIR, XRD and TEM.
Thermal properties and chemical structures of this series of nanocomposites were studied and discussed with different feeding ratio of the montmorillonite in PVA matrix. This nanocomposites was found to display an enhanced heat resistance at increasing amount of clay loading. The optical transparency of PCN membranes was also found to decrease as the clay loading increased.
For the second part, a series of poly(vinylcarbazole)（PVK）–clay nanocomposites （PCN）were prepared by dispersing the nanolayers of inorganic montmorillonite （MMT） / clay into organic poly (vinylcarbazole) matrix via the in photo polymerization. The as-synthesized poly (vinylcarbazole) / montmorillonite （MMT）clay nanocomposites were subsequently characterized by FTIR, XRD and TEM.
Thermal properties and chemical structures of this series of nanocomposites were studied and discussed with different feeding ratio of the montmorillonite in PVK matrix. This nanocomposites was found to display an enhanced heat resistance at decreasing amount of clay loading. The UV-vis of PCN membranes was found to display blue shift as the clay loading increased.

並列關鍵字

poly(vinyl carbazole) ； poly(vinyl alcohol)

參考文獻

4.Georga R. Brubaker, Corrosion Chemistry.（1979）

5.F.E. Karasz, P. n. Prasad, Y. Pang, US Patent 5130362,（1992）.

7.Y. Wang, N. Herron, Solid State Commun.（1991）,77,33.

11.Feher, F.；Berthold, H. J. Z. Anorg. Allg. Chem.,（1953）, 273,144.

18.A. K. Dutta, Phys. Rev. 90, 187（1953）.