نتایج جستجو برای: non isothermal crystallization

تعداد نتایج: 1349859  

2007
Bo Su Martin Burger

The aim of this paper is to show the global existence of weak solutions for a moving boundary problem arising in the non-isothermal crystallization of polymers. The main features of our works are (i) the moving interface is shown to be of co-dimension one; (ii)finite Hölder continuous propagation speed yields an intrinsic estimate of finite co-dimension one Hausdorff measure of the moving inter...

2000
C. J. KEDWARD W. MACNAUGHTAN J. R. MITCHELL

Isothermal differential scanning calorimetry (DSC) was used to study the crystallization kinetics of amorphous lactose at 3 moisture contents. Each sample was heated to several temperatures between Tg and Tm. After subtraction of an induction time, the Avrami equation was used to model the data and a Lauritzen-Hoffman like expression used to fit the crystallization rates between Tg and Tm. The ...

Journal: :Chirality 2005
Martin Peter Elsner Dimas Fernández Menéndez Eva Alonso Muslera Andreas Seidel-Morgenstern

The purpose of this paper is to investigate the concept of preferential crystallization, with a focus on aspects of quantification and application from an engineering point of view. The amino acid threonine was used as a model system in the experiments performed. Application of on-line polarimetry in combination with measurements of an on-line density meter proved the general applicability of t...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2015
Zhen Shao Jonathan P Singer Yanhui Liu Ze Liu Huiping Li Manesh Gopinadhan Corey S O'Hern Jan Schroers Chinedum O Osuji

A bulk metallic glass forming alloy is subjected to shear flow in its supercooled state by compression of a short rod to produce a flat disk. The resulting material exhibits enhanced crystallization kinetics during isothermal annealing as reflected in the decrease of the crystallization time relative to the nondeformed case. The transition from quiescent to shear-accelerated crystallization is ...

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