کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8513563 | 1556497 | 2018 | 28 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Crystalline Polymorphism Emerging From a Milling-Induced Amorphous Form: The Case of Chlorhexidine Dihydrochloride
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
Amorphous - آمورفGlass transition - انتقال شیشهSolid state - حالت جامدGlass - شیشه Materials science - علم مواد یا دانش موادMechanical activation - فعال سازی مکانیکیMilling - فِرِزکاری X-ray powder diffractometry - پراش اشعه ایکس پراشCrystal polymorphism - پلی مورفیسم کریستالCalorimetry (DSC) - کالریمتری (DSC)
موضوعات مرتبط
علوم پزشکی و سلامت
داروسازی، سم شناسی و علوم دارویی
اکتشاف دارویی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
In this paper, solid-state amorphization induced by mechanical milling is shown to be a useful tool to explore the polymorphism of drugs and their mechanism of devitrification. We show in particular how the recrystallization of amorphous chlorhexidine dihydrochloride obtained by milling reveals a complex polymorphism that involves several polymorphic forms. Two new crystalline forms are identified, one of them appearing as a highly disordered precursor state which however clearly differs from the amorphous one. Several interpretations are here proposed to describe the puzzling nature of this phase. In addition, the possibility to amorphize chlorhexidine dihydrochloride by milling allowed to determine the main physical characters of the amorphous state which cannot be obtained through the usual thermal quench of the liquid because of a strong chemical degradation occurring on melting.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Pharmaceutical Sciences - Volume 107, Issue 1, January 2018, Pages 121-126
Journal: Journal of Pharmaceutical Sciences - Volume 107, Issue 1, January 2018, Pages 121-126
نویسندگان
Elena Elisei, Jean-François Willart, Florence Danède, Jürgen Siepmann, Florence Siepmann, Marc Descamps,