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3.3. Morphological analyses Fig. 3 shows the SEM images of the resin incubated in different liquid media. The SEM images of the dry resin surface and the cross section are shown in Fig. 3(a) and (b). From Fig. 3(b), the resin produced through graft copolymerization of _-CD with AA and AM had a clear, stratified rock structure with a large number of pores (Fig. 3(b)), which increased the adsorption surface area and improved the exchange and adsorption processes. The SEM images of the resin in distilled water and in NaCl, CaCl2, and AlCl3 solutions are shown in Fig. 3(c)–(f), respectively. After absorption, the internal structure of the resin assumes an obvious three-dimensional polygon network on the inside, while the network size decreased with increasing valence state of the metal ions. The three-dimensional network structure of the resin in Ca2+ and Al3+ solutions was damaged to a particular degree. This observation is related with the swelling behavior of resin in high-state positive ion solutions. The swelling capacity also decreased with increasing valency of the metal ions. |
至尊木蟲 (知名作家)
Translator and Proofreader
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3.3. 形態(tài)分析 圖3顯示,樹脂在不同液體介質的SEM圖像。干樹脂表面和橫截面的SEM圖像見圖3(a)和(b)。從圖3(b)可見,通過對β-CD與AA和AM接枝共聚產生的樹脂具有清晰,分層的巖石結構,且含有大量細孔(圖3(b)),這增加了吸附表面積,提高了交換和吸附過程。在蒸餾水,氯化鈉,氯化鈣,和氯化鋁溶液中,樹脂的SEM圖像分別見圖3(C) - (F)。吸收后,樹脂內部結構在里面形成一個明顯的三維多邊形網絡,而網絡大小隨著金屬離子價態(tài)的增加而減小。在鈣離子和鋁離子溶液中,樹脂的三維網狀結構被破壞到特定程度。這一觀察結果與樹脂在高態(tài)正離子溶液中的溶脹性能有關。隨著金屬離子化合價的增加,樹脂的溶脹能力也降低。 |
捐助貴賓 (職業(yè)作家)

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