Titre :

Structural Transformations of <scp>d</scp> -Mannitol Induced by in Situ Milling Using Real Time Powder Synchrotron Radiation Diffraction

Auteur(s) :

Martinetto, Pauline [Auteur]
Matériaux, Rayonnements, Structure [NEEL - MRS]
Bordet, Pierre [Auteur]
Matériaux, Rayonnements, Structure [NEEL - MRS]
Descamps, Marc [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Dudognon, Emeline [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Pagnoux, William [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Willart, Jean-François [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]

Titre de la revue :

Crystal Growth & Design

Numéro :

17

Pagination :

6111-6122

Date de publication :

2017-10-06

Discipline(s) HAL :

Physique [physics]/Matière Condensée [cond-mat]/Systèmes désordonnés et réseaux de neurones [cond-mat.dis-nn]
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Physique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft]

Résumé en anglais : [en]

We have investigated the solid-state transformation of anhydrous β-d-mannitol upon milling using synchrotron X-ray powder diffraction. The 1720 diffraction patterns, collected in real time during the operation of the mill ...
Lire la suite >We have investigated the solid-state transformation of anhydrous β-d-mannitol upon milling using synchrotron X-ray powder diffraction. The 1720 diffraction patterns, collected in real time during the operation of the mill (6 h), have been analyzed by sequential Rietveld refinements. From this analysis we confirm that a polymorphic conversion has occurred from the form β toward the form α. Moreover, the quantification and the microstructural analysis of both polymorphs have allowed obtaining new results: (i) the kinetic of the transformation is characterized by a sigmoidal shape, (ii) little microstructural evolution occurs during the solid-state transformation, (iii) no intermediate amorphous phase, preceding the transformation toward the metastable crystalline α phase, can be detected. A comparison in depth of the two crystal structures is given, and two models are proposed in order to explain this direct conversion β → α.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
ENSCL
CNRS
INRA

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Matériaux Moléculaires et Thérapeutiques

Date de dépôt :

2019-10-30T15:38:14Z
2024-09-10T14:07:26Z