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wangzhanyue

木虫 (小有名气)

[求助] PLGA冷冻干燥去除溶剂二氧六环的问题

求助:我使用1,4-二氧六环作溶剂去溶解PLGA然后冻干以获得多孔支架材料,但是我已经在-60下冻干三天了,取出来后支架还是黏黏的,不成形,溶剂没有除尽。是不是因为在-60下温度太低导致没法除尽。二氧六环的凝固点也就11度。然后我又在25℃环境下冻干2天,溶剂残留量也很高,药典中显示1,4二氧六环限值是380ppm。但我看文献里冻干都是24小时就可以了。烦请各路大神有什么好办法冻干去除二氧六环的,谢谢了。
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JHR1101

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溶剂沸点太高,导致除不净

发自小木虫Android客户端
2楼2022-04-30 01:45:51
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