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S. Kahle

Researcher at Martin Luther University of Halle-Wittenberg

Publications -  13
Citations -  569

S. Kahle is an academic researcher from Martin Luther University of Halle-Wittenberg. The author has contributed to research in topics: Glass transition & Cooperativity. The author has an hindex of 12, co-authored 13 publications receiving 553 citations.

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Fine Structure of the Main Transition in Amorphous Polymers: Entanglement Spacing and Characteristic Length of the Glass Transition. Discussion of Examples

TL;DR: In this paper, the main transition of amorphous polymers is analyzed with respect to a fine structure by means of new experimental dynamic shear, dielectric, and heat capacity data for the following polymers: poly(n-alkyl methacrylate)s with alkyl = methyl, ethyl, propyl, butyl, and hexyl, polystyrene, polyvinyl acetate, a series of weakly vulcanized natural rubbers, polyisobutylene, and bromobutyl rubber.
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Dielectric Spectroscopy in the αβ Splitting Region of Glass Transition in Poly(ethyl methacrylate) and Poly(n-butyl methacrylate): Different Evaluation Methods and Experimental Conditions

TL;DR: In this article, the Williams product ansatz for correlation functions and an additive anatz for dielectric functions are compared for poly(ethyl methacrylate) samples and evaluation results of different experimentalists are compared.
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Glass-Transition Cooperativity Onset in a Series of Random Copolymers Poly(n-butyl methacrylate-stat-styrene)

TL;DR: In this paper, a separate onset of the α relaxation is dielectrically observed, about one frequency decade below a continuous local aβ component in the Arrhenius diagram, and the splitting scenario shifts to higher frequencies and temperatures for increasing styrene content and does not qualitatively change from homo PnBMA up to 54 mol % styrene.
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Temperature dependence of a glass transition cooperativity

TL;DR: In this paper, the size of glass transition cooperativity for 11 polymers and glycerol is determined from heat capacity spectroscopy (HCS) and differential scanning calorimetry (DSC).
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Two calorimetrically distinct parts of the dynamic glass transition

TL;DR: In this article, heat capacity spectroscopy experiments in the crossover region of poly(n-hexyl methacrylate) are presented which indicate, for the first time, that the dynamic glass transition consists of two separate parts in series.