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    • 2. 发明申请
    • METHOD FOR EVALUATING THE SOLUBILITY OF A CRYSTALLINE SUBSTANCE IN A POLYMER
    • 评估聚合物中晶体物质的溶解性的方法
    • WO2011089202A1
    • 2011-07-28
    • PCT/EP2011/050792
    • 2011-01-21
    • ABBOTT GMBH & CO. KGZHANG, Geoff G. Z.YU, LianTAO, JingSUN, YeMAEGERLEIN, Markus
    • ZHANG, Geoff G. Z.YU, LianTAO, JingSUN, YeMAEGERLEIN, Markus
    • G01N25/48G01N33/15
    • G01N33/15G01N25/4866G01N2013/006
    • A method for evaluating the solubility of a crystalline substance in a polymer comprises a) providing at least one sample of an intimate crystalline substance/polymer mixture at a predetermined crystalline substance concentration; b) annealing the sample at a constant temperature T a for a period of time; c) heating the annealed sample while recording the heat flux over time by DSC; d) identifying a DSC dissolution endotherm in the recorded heat flux, if any; e) considering the crystalline substance concentration as a concentration above the crystalline substance solubility in the polymer at temperature T a when there is a DSC dissolution endotherm identified, and considering the crystalline substance concentration as a concentration less than or equal to the crystalline substance solubility in the polymer at temperature T a when there is no DSC dissolution endotherm identified. Thus, the method yields the upper and lower bounds for the equilibrium solubility at a given temperature or the upper and lower bounds for the equilibrium solubility temperature at a given crystalline substance concentration. The method improves accuracy of measurement near the glass transition temperature.
    • 用于评价结晶物质在聚合物中的溶解度的方法包括a)以预定的结晶物质浓度提供至少一种紧密结晶物质/聚合物混合物的至少一个样品; b)在恒温Ta下将样品退火一段时间; c)加热退火样品,同时通过DSC随时间记录热通量; d)识别记录的热通量中的DSC溶解吸热(如果有的话); e)当确定DSC溶解吸热时,考虑结晶物质浓度高于结晶物质在聚合物中的溶解度的浓度,考虑到结晶物质浓度小于或等于结晶物质溶解度的浓度 聚合物在温度Ta时没有DSC溶解吸热确定。 因此,该方法产生在给定温度下的平衡溶解度的上限和下限,或者给定在给定结晶物质浓度下的平衡溶解度温度的上限和下限。 该方法提高玻璃化转变温度附近的测量精度。