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¿´µ½Ò»ÆªÎÄÏ×£¬ÖƱ¸Ö§¼Ü²ÄÁÏ£¬ÐðÊöÈçÏ£º Scaffold preparation by solid¨Cliquid phase separation: a known amount of polylactide was dissolved in dioxane to form solutions with desired concentrations. Four different concentrations of PLLA solution (0.5, 1.0, 3.0 and 5.0% w/v) were frozen and maintained over 2 hr to induce solid¨Cliquid phase separation completely. The clear 5% PLLA solutions were poured into aluminum foil molds (4x4 cm2) which were fast-frozen in liquid nitrogen, ice-water bath or freezer, respectively, and then were maintained at those temperatures for over 2 hr to induce solid¨Cliquid phase separation completely. Solvent was removed by freeze-drying for 3 days and the dried scaffolds were then kept in a desiccator until characterization or usage. ´Ë·½·¨ÊǹÌÒºÏà·ÖÀë·¨¡£°ÑPLAÈÜÔÚdioxaneÖУ¬Í¨¹ýÀä¶³¾Í¿ÉÒÔ¹ÌÒºÏà·ÖÀëÂð£¬Ê²Ã´ÔÀí°¡£¿ Àä¶³ºóΪʲô»á³öÏÖ¹ÌÒº·ÖÀë(solid-liquid phase separation)°¡? [ Last edited by wanss on 2010-11-29 at 19:15 ] |
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shileinjut:лл²ÎÓ룡 2010-11-28 00:03:39
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