共聚物中羧基(-COOH)含量的测定?用含水的乙醇、丙酮、异丙醇等溶剂溶解后滴定就可以了,可以参考药典中甲基丙烯酸树脂含量的方法:Methacrylic Acid Copolymer【美国药典】Assay— Dissolve about 1 g of Methacrylic Acid Copolymer, previously dried and accurately weighed, in 100 mL of neutralized acetone, add 1 drop of phenolphthalein TS, and titrate with 0.1 N sodium hydroxide VS until a pink color persists for 15 seconds. Each mL of 0.1 N sodium hydroxide is equivalent to 8.609 mg of methacrylic acid (C4H6O2)units.查看更多