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4 5 6 7 801234 μeo (108m2V1s1)pH Ba re capi l l ary quasi I PN 2 quasi I PN 3 quasi I PN 5 quasi I PN 6Properties of quasiIPN containing LPA with different molecular masses Polymer Mv of LPA (MDa) Intrinsic viscosity of LPA (mL/g) Molar ratio of AM/DMA Intrinsic viscosity of IPN (mL/g) quasiIPN 1 106 :1 88 quasiIPN 2 106 :1 145 quasiIPN 3 168 :1 167 quasiIPN 4 168 :1 266 quasiIPN 5 278 :1 260 quasiIPN 6 928 :1 840 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 731Mi g r a ti on ti m e ( m in )Bare ca p il lary0. 01AU2321Mi g r a ti on ti m e ( m in )Co a ti n g321Mi g r a ti on ti m e ( m in )S e ivin g EOF as a function of pH. Electropherograms of a mixture of standard proteins. 0 2 4 6 8 10 12 14 1631 M i gra t i on t i me ( mi n)Absorbance321 2321 321 p H 3p H 4p H 5p H 612 14 16 18 20 22 24 26 28 30 3212 14 16 18 20 22 24 26 28 30 3212 14 16 18 20 22 24 26 28 30 3212 14 16 18 20 22 24 26 28 30 32d Mi g r a ti o n ti m e ( m in)c1353107887260331028127123419411872 b Intensity aSeparation of Φ 174/HaeIII digest by CE with quasiIPN3 at (a) 2% w/v。 (b) 3% w/v。 (c) 4% w/v。 (d) 4% w/v. Conditions: Separation electric field strength of (a), (b), and (c) is –6 kV, separation electric field strength of (d) is –8 kV. Separation of basic proteins using quasiIPN3 coated capillary at different pH values. 1=cytochrome c。 2=Lysozyme。 3= Ribonuclease A. J. Sep. Sci., 2022, 32, 671680. ? 目前仍未找到一種普適性的涂層對所有種類的蛋白質(zhì)分離都是有效的,因為不同種類的蛋白質(zhì)等電點不同,這就需要用于管壁涂覆的聚合物涂層有較寬的 pH適用范圍,并且期望可以通過改變緩沖溶液的 pH值實現(xiàn)對電滲流大小的控制,這應(yīng)該是未來用于分離蛋白質(zhì)的聚合物涂層的一個發(fā)展方向。