کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1389143 | 982844 | 2011 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Solid state amorphization kinetic of alpha lactose upon mechanical milling Solid state amorphization kinetic of alpha lactose upon mechanical milling](/preview/png/1389143.png)
It has been previously reported that α-lactose could be totally amorphized by ball milling. In this paper we report a detailed investigation of the structural and microstructural changes by which this solid state amorphization takes place. The investigations have been performed by Powder X-ray Diffraction, Solid State Nuclear Magnetic Resonance (13C CP-MAS) and Differential Scanning Calorimetry. The results reveal the structural complexity of the material in the course of its amorphization so that it cannot be considered as a simple mixture made of a decreasing crystalline fraction and an increasing amorphous fraction. Heating this complexity can give rise to a fully nano-crystalline material. The results also show that chemical degradations upon heating are strongly connected to the melting process.
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Journal: Carbohydrate Research - Volume 346, Issue 16, 29 November 2011, Pages 2622–2628