PolyHIPEs from Methyl methacrylate: Hierarchically structured microcellular polymers with exceptional mechanical properties

被引：54

作者：

Hus, Sebastjan ^{[1
]}

Krajnc, Peter ^{[2
]}

机构：

[1] Polymer Technol Coll, SI-2380 Slovenj Gradec, Slovenia

[2] Univ Maribor, Fac Chem & Chem Engn, PolyOrgLab, SI-2000 Maribor, Slovenia

来源：

POLYMER | 2014年 / 55卷 / 17期

关键词：

polyHIPEs; Methyl methacrylate; Porous polymers; INTERNAL PHASE EMULSIONS; POROUS POLYMERS; FOAMS; MONOLITHS; PHOTOPOLYMERIZATION; POLYMERIZATION; NANOCOMPOSITES; SCAFFOLDS; POROSITY;

D O I：

10.1016/j.polymer.2014.07.007

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Highly porous monoliths with excellent mechanical properties and porosity of up to 90% were prepared by the polymerisation of high internal phase emulsions (HIPE) containing methyl methacrylate (MMA) and ethylene glycol dimethacrylate (EGDMA). Materials with open cellular morphology and cavity diameters between 0.6 and 4.5 mu m are obtained using a homogenizer and between 0.8 and 25 mu m using a standard overhead stirrer. Samples with 80% pore volume have E-moduli up to 180 MPa, while 75% porous samples exhibit E-moduli up to 211 MPa. A dependence of mechanical properties on cavity size distribution is identified, where a more hierarchically developed porous structure results in significantly better mechanical properties. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：4420 / 4424

页数：5

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