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sltmac(½ð±Ò+1): ¸Ðл½»Á÷£¬»¶Ó³£À´~ 2011-07-22 16:05:55
nirenjie0627(½ð±Ò+20, ·ÒëEPI+1): лл£¬·µÃºÜ²»´íÁË£¡ 2011-07-22 20:43:12
sltmac(½ð±Ò+5): »¶Ó³£À´~ 2011-07-27 09:10:49
nirenjie0627(½ð±Ò+5): лл 2011-09-02 10:45:29
sltmac(½ð±Ò+1): ¸Ðл½»Á÷£¬»¶Ó³£À´~ 2011-07-22 16:05:55
nirenjie0627(½ð±Ò+20, ·ÒëEPI+1): лл£¬·µÃºÜ²»´íÁË£¡ 2011-07-22 20:43:12
sltmac(½ð±Ò+5): »¶Ó³£À´~ 2011-07-27 09:10:49
nirenjie0627(½ð±Ò+5): лл 2011-09-02 10:45:29
| It can be seen from the figure that the stretching vibration absorption bands of CH3-,-CH2- ranges from 2850 to 3000cm-1, with its bending vibration absorption bands at 1450 ~ 1470 cm-1 and 720 ~ 725 cm-1. The stretching vibration of C- N is at 1030 ~ 1230 cm-1 range while the stretching vibration of -C-O-C- is near 1140cm-1. The absorption bands which is in the range of 1620~1680 or 3410~3540cm-1 indicates that there is water in the samples, which might be attributed to the fact that the oxygen atoms in -C-O-C-bond can easily combine with the hydrogen atoms in the H2O molecule to form hydrogen bonds. |

2Â¥2011-07-22 12:00:34













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