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banban6322(½ð±Ò+1,VIP+0):ллÄãµÄ½¨Òé 9-7 22:40
banban6322(½ð±Ò+1,VIP+0):ллÄãµÄ½¨Òé 9-7 22:40
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banban6322(½ð±Ò+8,VIP+0):ʵÔÚÌ«¸ÐлÁË¡£Ð»Ð» 9-7 22:42
banban6322(½ð±Ò+8,VIP+0):ʵÔÚÌ«¸ÐлÁË¡£Ð»Ð» 9-7 22:42
| Peaks at £¨¦ÄH 2.1 ~ 2.3£© are belong to the acetyl proton. Signals of ¦ÄH 6.6~7.5 and ¦ÄH 7.9~8.4 attribute to o- and m-hydrogen proton of the benzene ring and carboxyl in the copolyester respectively. The large area of peak from ¦ÄH 6.6 to 8.4 showed there are more benzene rings in the copolyester. Corresponding with IR spectrum, it is think synthetic polymer is the structure of rigid-flexible phase as a whole. |

3Â¥2009-09-07 20:39:19














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