Results 151 to 160 of about 1,946 (184)

The glass transition of amylopectin measured by DSC, DMTA and NMR

Carbohydrate Polymers, 1992
Abstract The glass transition in amorphous amylopectin derived from waxy maize starch, and containing between 10 and 22% water, has been studied using differential scanning calorimetry, dynamic mechanical thermal analysis, the Instron texturometer and nuclear magnetic resonance (both pulsed and solid state NMR).
M.T. Kalichevsky, E.M. Jaroszkiewicz, S. Ablett, J.M.V. Blanshard, P.J. Lillford   +4 more
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A Low Modulus Adhesive Characterization by Means of DMTA Testing

The Journal of Adhesion, 2012
The main objective of this paper is to investigate a way to characterize experimentally the mechanical behavior of low modulus adhesives. In this context, the relaxation and complex moluli master curves of a SIKAFLEX® 505 adhesive are obtained by means of dynamic mechanical thermal analysis. Firstly, the procedure carried out to prepare and to validate
Jon García-Barruetabeña, Fernando Cortés, José Manuel Abete   +2 more
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Determination of viscoelastic properties with TMA, DMTA and DSC

Thermochimica Acta, 1985
Abstract Viscoelastic properties mainly determine the application possibilities of polymers. Because of the generally high sensitivity required to see changes in the elastic properties, thermomechanical methods become increasingly important compared to calorimetric methods. On a sample of thermoplastic PU, and a unidirectional carbon fibre reinforced
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Molecular dynamics of elastomers investigated by DMTA and the NMR-MOUSE ®

Colloid & Polymer Science, 2002
A series of elastomers, consisting of different polymers and crosslink densities, is investigated by dynamic-mechanical thermal analysis (DMTA) and NMR relaxation in an inhomogeneous field by the NMR-MOUSE®. A broad range of molecular mobilities and therefore variation in the glass transition temperature is covered by use of polymers with different ...
Herrmann, Volker, Unseld, K., Fuchs, H.B., Blümich, Bernhard   +3 more
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Curing of a thermosetting powder coating by means of DMTA, TMA and DSC

Polymer, 2003
Abstract The curing of a thermosetting powder coating made up of carboxyl-terminated polyester and triglycidylisocyanurate (TGIC) was studied by means of dynamic mechanical thermal analysis (DMTA), thermal mechanical analysis (TMA) and differential scanning calorimetry (DSC). On the basis of isothermal curing of the coating on different supports with
X Ramis, A Cadenato, J.M Morancho, J.M Salla   +3 more
openaire   +1 more source

Investigation on PA/PP mixture properties by means of DMTA method

Journal of Materials Processing Technology, 2006
Abstract Polymer mixing is presently one of the most effective and the most intensely developing methods of physical properties modification for polymers. Mixing polymers one can modify certain properties, mainly physical. In this work, investigation results for mixtures of polyamide 6 with polypropylene have been presented.
A. Gnatowski, J. Koszkul
openaire   +1 more source

Examination of Thermodynamic Realignments of Metals and Metal-Alloys, by DMTA Technique

Materials Science Forum, 2015
The researcher work pushes the borders of the application of a high efficiency equipment, in the matter of metals. With this equipment, which already testified in the compound industry, a flasher query of some metal-related technological parameters could be easily available.
Béres Gábor, Zsolt Dugár, Dávid Kis, Pál Hansághy   +3 more
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The use of DMTA for predicting standard mechanical properties of developmental polyolefins

Journal of Thermal Analysis and Calorimetry, 2009
The correlation of linear data from dynamic-mechanical testing (DMTA) to nonlinear data from standard mechanical testing was attempted for a number of quite different polypropylene-based compositions. For limited composition ranges, correlations between storage modulus and stiffness as well as between loss angle integrals and impact strength could be ...
M. Gahleitner, C. Grein, K. Bernreitner, B. Knogler, E. Hebesberger   +4 more
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One-pot synthesis of DMTA-analogous SiBNC preceramic polymer

Journal of Materials Chemistry, 2012
A one-pot synthesis approach for a SiBNC precursor polymer is presented. With respect to composition and structure it is similar to the polymer as produced from the known single-source precursor DMTA (dichloroboryl methyl trichlorosilyl amine), as confirmed by FTIR spectroscopy.
Wilfert, J., Jansen, M.
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A cytosine methyltransferase ortholog dmtA is involved in the sensitivity of Aspergillus flavus to environmental stresses

Fungal Biology, 2017
DNA methylation is an important epigenetic modification that depends on DNA methyltransferases (DMT). However, the filamentous fungus Aspergillus flavus has no detectable methylation, and role of a DMT homologue, DmtA, is undefined. Here we describe the role of the dmtA gene responding to changes in the environment by comparing knockout, point mutation,
Qing-Qing, Zhi, Jie-Ying, Li, Qiu-Yun, Liu, Zhu-Mei, He   +3 more
openaire   +2 more sources