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4. Conclusions This study used the polyhydroxy structure of _-CD for the synthesis of _-cyclodextrin-based resin with super water absorbency. In this optimized condition, the water absorbency of the resin was 1544.76 g/g in distilled water and 144.52 g/g in 0.9 wt.% NaCl. Significant overswelling of the resin occurred in CaCl2 and AlCl3 solutions. The synthesized resin (dry) exhibited a clear stratified rock structure and had a large number of pores. The interior of the resin hydrogel showed a polygon structure with a three-dimensional network structure. The resin was thermoplastic, pH-sensitive, and biodegradable. This paper is merely a preliminary work. Further research on the role of resin in metal ion elimination will be conducted to explore other possible application of this material. |
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4. 結(jié)論 本研究中使用的β-CD的多羥基結(jié)構(gòu)合成了具有超吸水性的β-環(huán)糊精類樹脂。在這優(yōu)化條件下,該樹脂在蒸餾水中的吸水率為1544.76克/克,在0.9%(重量百分比)的NaCl中為144.52克/克。在氯化鈣和氯化鋁溶液中樹脂發(fā)生過度溶脹。合成的該樹脂(干)具有一個清晰的層狀巖石結(jié)構(gòu),并有大量的孔。該樹脂的水凝膠內(nèi)部具有三維網(wǎng)狀多邊形結(jié)構(gòu)。樹脂具有熱塑性,pH值敏感,而且是可生物降解的。本文僅僅是一個初步的工作。有關(guān)該樹脂在去除金屬離子中的作用需要進(jìn)一步研究,以探討該材料的其他可能應(yīng)用。 |
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