Control of pore formation in macroporous polymers synthesized by single-step γ-radiation-initiated polymerization and cross-linking
Control of pore formation in macroporous polymers synthesized by single-step γ-radiation-initiated polymerization and cross-linking
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DOI：
10.1016/j.polymer.2005.02.024
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发表时间：
2005-04
期刊：
影响因子：
4.6
通讯作者：
Á. Sáfrány;Barbara Beiler;K. László;F. Švec
中科院分区：
文献类型：
--
作者：
Á. Sáfrány;Barbara Beiler;K. László;F. Švec
系统地研究了γ辐射引发的多孔聚合物整体合成过程中的孔形成。这种方法的主要优点包括不需要典型的自由基引发剂，能够获得不同大小、形状和多孔特征的具有相同化学结构的整体。单体浓度、致孔溶剂类型、温度、辐射剂量和剂量率是主要影响最终聚合物整体性能的变量。在甲醇和异丙醇等低级醇的体积分数为60-80vol.%的情况下，二甲基丙烯酸二乙二醇酯在微米范围内具有较大的孔道状孔道，制备的整体具有良好的通流特性和适当的刚性。最佳剂量和剂量率分别为20~40kGy10~16kGyh。
Pore formation during the γ-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 60–80vol.% 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 20–40kGy and 10–16kGy/h, respectively.