掺合聚醯胺樹枝狀高分子之聚甲基丙烯酸甲酯多孔複合薄膜的形態學及物性之研究

Morphology and Physical Properties Studies of Porous Poly(methyl methacrylate) Composite Membranes by Incorporating Different Loading and Generation of Poly(amidoamine) Dendrimers

洪誌彬(Chih-Bing Hung)

指導教授 ： 葉瑞銘

中原大學/理學院/化學研究所/碩士(2011年)

https://doi.org/10.6840/cycu201100610

摘要

本論文利用聚醯胺樹枝狀高分子(PAMAM dendrimers)掺合聚甲基丙烯酸甲酯(PMMA)製備多孔複合薄膜，探討掺合聚醯胺樹枝狀高分子對聚甲基丙烯酸甲酯薄膜形態學和物理性質之影響，以及其在熱絕緣材料和氣體分離薄膜上的應用。
首先重複交替進行「Michael addition」及「Ester amidation」之合成步驟，合成一系列聚醯胺樹枝狀高分子((G0和G1) PAMAM) 產物，其具有不同大小和不同數目之封端官能基，並以傅立葉轉換紅外線光譜儀、液態核磁共振儀和質譜儀鑑定其化學結構。其次，將以「乳化聚合法」製備重量平均分子量約18,000之聚甲基丙烯酸甲酯材料，接著掺合不同代數和不同比例的聚醯胺樹枝狀高分子製備出一系列具孔隙性之聚甲基丙烯酸甲酯薄膜複合材料；光學性質、形態學分析顯示掺合聚醯胺樹枝狀高分子改變了薄膜結構；由實驗數據顯示: 聚醯胺樹枝狀高分子與線性聚甲基丙烯酸甲酯產生網狀交聯結構，提升了薄膜複合材料之熱穩定性和機械性質；其次，熱傳導和氣體滲透分析實驗數據亦顯示:聚甲基丙烯酸甲酯薄膜複合材料有好的熱絕緣性與較佳的二氧化碳/氮氣之氣體滲透選擇比。

關鍵字

氣體分離 ； 熱絕緣 ； 聚甲基丙烯酸甲酯 ； 樹枝狀高分子

並列摘要

In this paper, porous composite membranes were prepared via blending different generations of poly(amidoamine) (PAMAM) dendrimers with poly(methyl methacrylate) (PMMA). Phase behavior and physical properties resulted from interactions between blend components was studied, Moreover, potential application in thermal insulation materials and gas separation membranes were also investigated.
First of all, a series of PAMAM dendrimers (G0 and G1) products were prepared through repeat the synthesis steps of michael addition and ester amidation. It has different sizes and different number of functional groups terminated. The as-synthesized PAMAM dendrimers were characterized by FTIR, liquid NMR and mass spectrometry (TOF-mass). PMMA with weight molecular weight (Mw) of ~ 18,000 was prepared by emulsion polymerization, then different loading and different generations of PAMAM dendrimers were blending into as-synthesized PMMA to give a series of PMMA composite membranes.
Optical properties, phase behavior, thermal stability and mechanical strength of free-standing porous PMMA composite membranes was investigated by UV-visible absorption spectroscopy, SEM, DSC, TGA and DMA. It should be noted that the free-standing PMMA composite membranes exhibited good thermal insulation and gas separation based on the transient plane source (TPS) technique and gas permeability analysis (GPA) measurements, respectively.

並列關鍵字

gas separation ； thermal insulation ； poly(methyl methacrylate) ； dendrimers

參考文獻

[89] 戴崇峰，環氧樹脂奈米複合材料及孔洞性材料之製備與性質探討，中原大學化學研究所碩士論文 (2006)。

[90] 戴崇峰，環氧樹脂奈米複合材料及孔洞性材料之製備與性質探討，中原大學化學研究所碩士論文 (2006)。

[1] J. M. J. Frechet, Science, 1994, 263, 1710.

[2] C. J. Hawker, P. J. Farrington, M. E. Mckay, K. L. Wooley, J. M. J. Frechet, J. Am. Chem. Soc., 1995, 117, 4409.

[3] D. A. Tomalia, Prog. Polym. Sci., 2005, 30, 294.