以溶液分散法與原位總體聚合法製備聚甲基丙烯酸甲酯/黏土奈米複合材料及其性質研究

Synthesis and Properties of Poly(methyl methacrylate)/Clay Nanocomposite Materials Prepared by Solution Dispersion and In-Situ Bulk Polymerization

游雅晴(Ya-Cing Yu)

指導教授 ： 葉瑞銘

中原大學/理學院/化學研究所/碩士(2006年)

https://doi.org/10.6840/cycu200600294

摘要

本研究主要分為兩部分：一是以溶液分散法 (Solution Dispersion) 直接將商業用PMMA與黏土進行混摻，製備成奈米複合材料；另一則是以原位總體聚合法 (In-Situ Bulk Polymerization) 製備聚甲基丙烯酸甲酯/黏土奈米複合材料。在黏土改質部分，使用單改質劑與雙改質劑進行親油性改質，以改善黏土與高分子之間的相容性。
在本研究中，將進一步探討添加不同種類的親油性改質型黏土所製備之奈米複合材料在防腐蝕性質、氣體阻隔性質、熱性質與機械性質的影響。利用廣角X-ray繞射儀 (WAXRD) 觀察黏土層間距離的變化；再利用穿透式電子顯微鏡 (TEM) 進一步觀察黏土分散於高分子機材中的情形；使用循環伏特電位儀 (CV)、氣體透過率分析儀 (GPA) 與水氣透過率分析儀 (VPA) 測試一系列防腐蝕與阻隔性質之相關數據；另外，以熱重分析儀 (TGA) 與微差掃描式分析儀 (DSC) 測試奈米複合材料之熱穩定性；以動態機械分析儀 (DMA) 測試奈米複合材料之機械性質的變化。

關鍵字

防腐蝕 ； 奈米複合材料 ； 聚甲基丙烯酸甲酯 ； 黏土

並列摘要

A series of polymer-clay nanocomposite (PCN) materials that consisted of poly(methyl methacrylate) (PMMA) and layered montmorillonite (MMT) clay were prepared successfully by the effective dispersion of nanolayers of the MMT clay in the PMMA matrix through both solution dispersion and in-situ bulk polymerization. The organophilic clay were modified by double and single intercalating agents. The synthesized materials were subsequently investigated with a series of characterization techniques, including wide-angle powder X-ray diffraction (WAXRD) and transmission electron microscopy (TEM). PCN materials, in the form of coatings, incorporating with clay loading on cold-rolled steel (CRS) were found to be much superior in corrosion protection over those of pristine PMMA based on a series of electrochemical measurements including corrosion potential, polarization resistance, corrosion current, and impedance spectroscopy in 5 wt % aqueous NaCl electrolyte. Effects of the material composition on the O2 / H2O molecular permeability, thermal stability and mechanical strength of PMMA along with PCN materials, in the form of membrane, were also studied by molecular permeability analysis (GPA), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and dynamic mechanical analysis (DMA), respectively.

並列關鍵字

Clay ； Anticorrosion ； PMMA ； Nanocomposite

參考文獻

19. 王明光，環境土壤化學，2000.

1. Y. Kojima, A. Usuki, M. Kawasumi, A. Okada, T. Kurauchi, O. Kamigaito, J. polym. Sci. Part A：Polym. Chem., 1993, 31, 1755.

4. A. Usuki, Y. Kojima, J. Materials Res., 1993, 8, 1179.

10. J. W. Gilman, C. L. Jackson, A. B. Morgan, R. Jr. Hayyis, E. Manias, E. P. Giannelis, M. Wuthenow, D. Hilton, S. H. Phillips, Chem. Mater., 2000, 12, 1866.

12. Y. Wang, N. Herron, Solid State Commun., 1991, 77, 33.