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| The FTIR spectra of _-CD and the resin are shown in Fig. 2. The strong and wide OH peak for _-CD at 3404 cm−1 moved toward a lower wave number, and the resin had a strong and broad absorption peak at 3363 cm−1 (Ficarra et al., 2002). The introduction of acrylic acid increased OH, which led to the shift of the OH peak toward a lower wave number. Furthermore, the OH group absorption peak became broader because of the increasing hydrogen bonding between molecules. The CH2 stretching vibrations at 2925 cm−1 and 2846 cm−1 were significantly increase for the resin, which is mainly due to the formation of CH2 in the polymerization process during the introduction of acrylic acid and acrylamide monomer. Strong overlapping peaks at 1671 cm−1 can be attributed to C O stretching vibration peaks in acrylamide and carboxylic acids (Kuang, YuK, & Huh, 2011). |
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真强必胜: 金币+1, 谢谢 2014-10-19 21:03:14
haizhoubuer: 金币+5, 翻译EPI+1, ★★★★★最佳答案, 太棒了！ 2014-10-21 22:45:35
haizhoubuer(RXMCDM代发): 金币+10 2014-10-23 23:07:22
真强必胜: 金币+1, 谢谢 2014-10-19 21:03:14
haizhoubuer: 金币+5, 翻译EPI+1, ★★★★★最佳答案, 太棒了！ 2014-10-21 22:45:35
haizhoubuer(RXMCDM代发): 金币+10 2014-10-23 23:07:22
| β-CD和树脂的傅立叶变换红外（FTIR）光谱见图2。β-CD在3404厘米-1的强而宽的OH峰移向低波数，而树脂强而宽的吸收峰在3363 cm-1处（Ficarra等人，2002）。丙烯酸的引入增加了OH，导致OH吸收峰位移向低波数。另外，OH基吸收峰因为分子间氢键的增加变得更宽。树脂的CH2的伸缩振动在2925 cm-1和2846 cm-1明显增加，这主要是由于在引入丙烯酸和丙烯酰胺单体的聚合过程中形成了CH2。在1671 cm-1处强叠嶂可以归结为在丙烯酰胺和羧酸中CO的伸缩振动峰（Kuang, YuK, & Huh, 2011）。 |
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