butterflygys
第2楼2013/07/05
The historical difficulties encountered when attempting to measure the boiling point of pure liquids with DSC can be
minimized by using hermetic containers with very small pinholes and moderately slow heating rates. Hermetic containers
with a capacity of less than 50 uL, a specimen size of 2mg to 4mg, a heating rate of 5°C/min to 10°C/min, and a
clean pinhole of diameter 25 to 127mm are the preferred experimental parameters for this application of DSC.
附件文章里有讲,可以用打孔的密封盘测沸点(密封盘,比较小的孔,较慢的升温速率),可以测沸点,但是我没有亲自尝试过,不知道准确度及重复性怎么样。
tutm
第4楼2013/07/05
用DSC测,升温速度倒不是问题,打孔大小似乎不太好控制,关键测得是溶液温度而非蒸汽温度?