Foaming Behavior of Poly(methyl methacrylate) Nanocellular Foam

• Main Authors: Yu-Ting He, 何羽庭
• Other Authors: Shu-Kai Yeh
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/frru92

碩士 === 國立臺灣科技大學 === 材料科學與工程系 === 106 === Polymeric foam materials have always been an area of great importance in polymer materials. In recent years, nanocellular foam have attracted enormous attention because of their unique properties in thermal insulation and structure. In this study, a single molecular weight distribution poly(methyl methacrylate) (PMMA) was used to prepare nanocellular foam materials by the solid state batch foaming method . We compared PMMA with different molecular weights, changed the saturated temperature (Tsat) and foaming temperature (Tfoam) at a fixed saturated pressure (Psat), and observed the cell morphology of the foam. Nanocellular foam with a cell size of about 100 nm with a CO2 % of about 25.9% was successfully prepared using PMMA with a molecular weight of 350,000.