Control of pore formation in macroporous polymers synthesized by single-step γ-radiation-initiated polymerization and cross-linking

被引：82

作者：

Sáfrány, A

Beiler, B

László, K

Svec, F

机构：

[1] CRC Hungarian Acad Sci, Inst Isotopes, Radiat Chem Dept, H-1525 Budapest, Hungary

[2] Budapest Univ Technol & Econ, Dept Phys Chem, Budapest, Hungary

[3] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

来源：

POLYMER | 2005年 / 46卷 / 09期

基金：

匈牙利科学研究基金会;

关键词：

synthetic polymers; radiation polymerization and cross-linking; porous monolithic column;

D O I：

10.1016/j.polymer.2005.02.024

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Pore formation during the gamma-radiation-initiated synthesis of porous polymer monoliths has been systematically investigated. The major advantages of this approach include absence of typical free radical initiators and ability to obtain monoliths with the same chemical structure in a variety of sizes, shapes and porous characteristics. Monomer concentration, type of porogenic solvent, temperature. irradiation dose, and dose rate. are variables mostly affecting the properties of the final polymer monolith. Monoliths prepared from diethyleneglycol dimethacrylate in the presence of 60-80 vol.% of lower alcohol such as methanol and 2-propanol with large channel-like pores in the micrometer range exhibit both good flow-through characteristics and appropriate rigidity. The optimum doses and dose rates were found in the range 20-40 kGy and 10-16 kGy/h. respectively. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：2862 / 2871

页数：10