A new difunctional monomer N,N'-[bis(4,4'-hydroxypropyl methacrylate phenyl ester) pyromellitimide] (BHPMEPM), was synthesized by the reaction of the bis(4-carboxyphenyl)-N,N'-pyromelli- timide acid (diaci...A new difunctional monomer N,N'-[bis(4,4'-hydroxypropyl methacrylate phenyl ester) pyromellitimide] (BHPMEPM), was synthesized by the reaction of the bis(4-carboxyphenyl)-N,N'-pyromelli- timide acid (diacid-diimide), and two molar equivalents of glycidylmethacrylate (GMA). The reaction was carried out by microwave radiation. The presence of difunctional groups, double bond groups, makes the monomer a potential material for obtaining thermosetting product. The curing and thermal stability of the crosslinked products were studied by differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA) techniques. The difunctional monomer and its thermoset polymer were characterized by FT-IR, 1</sup>H-FT-NMR and CHN elemental analysis.展开更多
采用一步种子溶胀聚合法制备了颗粒呈单分散的交联聚甲基丙烯酸环氧丙酯树脂 ,对其环氧基的组成比进行了表征 ,并以氨基葡萄糖为配基 ,首次制备了纯化粗品伴刀豆球蛋白 A (Con A ,Ⅲ )的聚合物基质的高效亲合色谱柱。配基在树脂上的...采用一步种子溶胀聚合法制备了颗粒呈单分散的交联聚甲基丙烯酸环氧丙酯树脂 ,对其环氧基的组成比进行了表征 ,并以氨基葡萄糖为配基 ,首次制备了纯化粗品伴刀豆球蛋白 A (Con A ,Ⅲ )的聚合物基质的高效亲合色谱柱。配基在树脂上的键合量为 8.2mg g ,对纯化后的Con A 的吸附量为 13.4mg g。使用该亲合色谱介质成功地从粗品Con A中快速纯化了Con A ,电泳分析显示为一个主要的谱带 ,纯度从 15 %提高到 95 %。展开更多
以自合成的5.0μm单分散大孔亲水交联聚甲基丙烯酸环氧丙酯(PGMA-EDMA)微球为基质,与亚氨基二乙酸键合,合成了亲水性阳离子色谱固定相。用3.5 mmol/L甲烷磺酸作淋洗液,在流速为1.0 m L/min下,对二乙醇胺、Na+、NH4+、K+混合样及有机胺...以自合成的5.0μm单分散大孔亲水交联聚甲基丙烯酸环氧丙酯(PGMA-EDMA)微球为基质,与亚氨基二乙酸键合,合成了亲水性阳离子色谱固定相。用3.5 mmol/L甲烷磺酸作淋洗液,在流速为1.0 m L/min下,对二乙醇胺、Na+、NH4+、K+混合样及有机胺和铵离子混合样进行分离。将其用于黄纸板中阳离子的分离测定,与原子吸收法(AAS)对照,测定结果基本一致。展开更多
文摘A new difunctional monomer N,N'-[bis(4,4'-hydroxypropyl methacrylate phenyl ester) pyromellitimide] (BHPMEPM), was synthesized by the reaction of the bis(4-carboxyphenyl)-N,N'-pyromelli- timide acid (diacid-diimide), and two molar equivalents of glycidylmethacrylate (GMA). The reaction was carried out by microwave radiation. The presence of difunctional groups, double bond groups, makes the monomer a potential material for obtaining thermosetting product. The curing and thermal stability of the crosslinked products were studied by differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA) techniques. The difunctional monomer and its thermoset polymer were characterized by FT-IR, 1</sup>H-FT-NMR and CHN elemental analysis.
文摘采用一步种子溶胀聚合法制备了颗粒呈单分散的交联聚甲基丙烯酸环氧丙酯树脂 ,对其环氧基的组成比进行了表征 ,并以氨基葡萄糖为配基 ,首次制备了纯化粗品伴刀豆球蛋白 A (Con A ,Ⅲ )的聚合物基质的高效亲合色谱柱。配基在树脂上的键合量为 8.2mg g ,对纯化后的Con A 的吸附量为 13.4mg g。使用该亲合色谱介质成功地从粗品Con A中快速纯化了Con A ,电泳分析显示为一个主要的谱带 ,纯度从 15 %提高到 95 %。
文摘以自合成的5.0μm单分散大孔亲水交联聚甲基丙烯酸环氧丙酯(PGMA-EDMA)微球为基质,与亚氨基二乙酸键合,合成了亲水性阳离子色谱固定相。用3.5 mmol/L甲烷磺酸作淋洗液,在流速为1.0 m L/min下,对二乙醇胺、Na+、NH4+、K+混合样及有机胺和铵离子混合样进行分离。将其用于黄纸板中阳离子的分离测定,与原子吸收法(AAS)对照,测定结果基本一致。
