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lize

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[交流] 【求助】壳聚糖/磷酸三钙复合材料 已有4人参与

壳聚糖与磷酸三钙复合,怎么造孔啊?愁死啦
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gxuzhanglin

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yusen_1982(金币+1):欢迎讨论! 2010-12-31 20:45:38
你要做磷酸三钙单一微球的话就高温烧结,壳聚糖就被烧掉了,剩下的就是磷酸钙多孔支架
世上没有绝望的处境,只有对处境绝望的人
2楼2010-12-30 13:52:42
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gaochunxia

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americanyk(金币+1): 欢迎讨论! 2011-02-10 17:38:00
americanyk(金币+1): 欢迎新虫! 2011-02-10 17:38:16
很多方法啦,譬如加制孔剂(氯化钠颗粒),冷冻干燥等。主要看你自己的实验要求
坚持!!
3楼2011-02-10 08:14:18
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kingmok

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Originally posted by gaochunxia at 2011-02-10 08:14:18:
很多方法啦,譬如加制孔剂(氯化钠颗粒),冷冻干燥等。主要看你自己的实验要求

氯化钠颗粒做制空剂怎么做啊?原理是什么呢?
4楼2011-02-15 21:13:04
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gaochunxia

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americanyk(金币+3): 欢迎讨论! 2011-02-18 15:42:40
很多文献啊,可以把氯化钠和你的基材混合,然后再融掉它。
For example :At first, PLA or PLGA sponges were prepared by a particulate-
leaching technique using sieved sodium chloride
particulates or pre-prepared ice particulates as a porogen.
After sodium chloride or pre-prepared ice particulates
were removed by washing with water or freeze-drying, porous
structures were formed.
http://onlinelibrary.wiley.com/d ... 55%3E3.0.CO;2-C/pdf
2F2001&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_searchStrId=1646345283&_rerunOrigin=scholar.google&_acct=C000050561&_version=1&_urlVersion=0&_userid=4248650&md5=dec6c8e5e4709a045a21062afe8c00f6&searchtype=a#sec2.2
A solution of chitosan (1.5% in weight) in 0.5  aqueous acetic acid was prepared and one of soluble porogens such as sodium chloride, glucose and sucrose was then dissolved in it. The mixture was poured into the mould containing the dry chitosan film at its bottom. The mold was immediately frozen at −28°C and then lyophilized in a freeze-dryer (FTSTM Systems Inc., USA) to give a porous sponge layer over the film.http://www.sciencedirect.com/sci ... _coverDate=02%2F15%
坚持!!
5楼2011-02-18 14:16:25
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microscopyxmc

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学习了,ixexie !!
6楼2014-01-11 15:19:47
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