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大四写论文金虫 (正式写手)
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[求助]
求翻译这段话
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Equipments Proton nuclear magnetic resonance (1H-NMR, 500 MHz) spectra were recorded in DMSO-d6 solution using a Bruker (Germany) Avance 500 instrument. Proton resonances are designated as singlet (s), doublet (d), doublet of doublet (dd) and multiplet (m). FT-IR spectra were recorded on Jasco-680 (Japan) spectrophotometer. The spectra of solids were obtained using KBr pellets. The vibrational transition frequencies are reported in wavenumbers (cm-1). Band intensities are assigned as weak (w), medium (m), strong (s) and broad (br). Inherent viscosities were measured by using a Cannon-Fenske Routine Viscometer (Germany) at concentration of 0.5 g dL-1 at 25 C. Specific rotations were measured by a Jasco Polarimeter (Japan). Thermal gravimetric analysis (TGA) data for polymers were taken on a PerkinElmer (Pyris 1) instrument in a nitrogen atmosphere at a rate of 10 C min-1, and differential scanning calorimetry (DSC) data were recorded at a rate of 20 C. Glass transition temperatures (Tg) were read at the middle of the transition in the heat capacity taken from the heating DSC traces. Elemental analyses were performed by the Iranian Polymer and Petrochemical Institute, Tehran, Iran. Monomer synthesis (2S)-4-[(4-Methyl-2-phthalimidylpentanoylamino)benzoylamino]isophthalic acid (1) was synthesizes according to our previous work [31]. |
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jiangguofeng
金虫 (著名写手)
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- 专业: 合成药物化学
【答案】应助回帖
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聚合物的合成 在反应介质RTIL中油浴加热进行聚合反应，通过下列一般方法制备PA：作为PA5cI制备实例, 0.100 g ( 0.244 mmol)的二酸1和0.061 g ( 0.244 mmol)的二胺2c溶于0.150 g 1,3 -二异丙基咪唑溴( 1,3 - ( isopr) 2im] Br),然后将0.13 mL ( 0.488 mmol)的TPP加进。全部溶液加热110℃2.5小时。由于聚合反应的发展溶液变得更为黏稠。生成的产物溶于1 mL的二甲基甲酰胺中然后倾入装有30 mL甲醇（乙醇)的烧杯中,或者将甲醇（乙醇）直接加到没使用二甲基甲酰胺的反应容器中。滤出得到的固形物然后真空干燥，得到0.146 g (94%)的PA5cI。 在反应介质NMP中油浴加热进行聚合反应，通过下列一般方法制备PA：作为PA5cII制备实例, 0.06 g ( 0.244 mmol)二胺2c、0.10 g ( 0.244 mmol)二酸1、0.060 g的CaCl2、0.15 mL吡啶、0.14 mL的TPP和0.5 mL的NMP组成的混合物投入配有机械搅拌器和冷凝器的烧瓶中。氮气保护下混合物搅拌并回流５小时。 反应结束时，将得到的聚合物溶液一滴滴注入搅拌下的20 mL甲醇或者乙醇中。这种白色粘稠的聚合物用热水和甲醇彻底地洗涤,过滤收集，减压下在100℃干燥，得到0.138 g ( 82%)的PA5cII。 |
2楼2015-04-08 11:32:01