Searched for: subject%3A%22glass%255C+transition%22
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Ghanbari, E. (author), Picken, S.J. (author), van Esch, J.H. (author)
We have developed an analytical method to quantitatively analyze differential scanning calorimetry (DSC) experimental data. This method provides accurate determination of thermal properties such as equilibrium melting temperature, latent heat, change of heat capacity which can be performed automatically without intervention of a DSC operator....
journal article 2023
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Apostolidis, P. (author), Elwardany, Michael (author), Andriescu, Adrian (author), Mensching, David J. (author), Youtcheff, Jack (author)
Glass transition parameters can be used to study the miscibility, or lack of it, in polymer-modified asphalt binders. In this study, the contribution of thermodynamics of mixing to glass transition was quantitatively assessed in a differential scanning calorimeter for four asphalt binders partially and fully replaced by an epoxy system. The...
journal article 2023
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Inamdar, A.S. (author), Gromala, Przemyslaw Jakub (author), Prisacaru, Alexandru (author), Kabakchiev, Alexander (author), Yang, Yu Hsiang (author), Han, Bongtae (author)
Epoxy molding compound (EMC) is widely used for encapsulating automotive electronics. Among all of the components of an electronic package, EMC is most exposed to the atmosphere, and thus undergoes aging. During high-temperature operation, EMC is oxidized, which alters its mechanical properties, and thus can affect the reliability of electronic...
book chapter 2022
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Pakvis, Sara (author)
In recent developments in the field of multi-material additive manufacturing, differences in material properties are exploited to create printed shape memory structures, which are referred to as 4D-printed structures. New printing techniques allow for the introduction of prestresses in the specimen during manufacturing. This research focuses on...
master thesis 2021
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Picken, S.J. (author), Filonenko, G.A. (author)
Polymer glasses have an irregular structure. Among the causes for such complexity are the chemically distinct chain end groups that are the most abundant irregularities in any linear polymer. In this work, we demonstrate that chain end induced defects allow polymer glasses to create confined environments capable of hosting small emissive...
journal article 2021
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Apostolidis, P. (author), Elwardany, Michael (author), Porot, Laurent (author), Vansteenkiste, Stefan (author), Chailleux, Emmanuel (author)
The RILEM TC 272 PIM (Phase and Interphase behavior of innovative bituminous Materials)—TG1 Binder has initiated an inter-laboratory program investigating the phase and interphase behaviour of bituminous binders. Within the scope, four laboratories evaluated the low temperature properties of seven binders with differential scanning calorimetry ...
journal article 2021
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Sewalt, E.J.G. (author), Zhang, F. (author), van Steijn, V. (author), van Ommen, J.R. (author), Meesters, G.M.H. (author)
Sticking of particles has a tremendous impact on powder-processing industries, especially for hygroscopic amorphous powders. A wide variety of experimental methods has been developed to measure at what combinations of temperature and moisture content material becomes sticky. This review describes, for each method, how so-called stickiness...
journal article 2021
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Struzziero, G. (author), Nardi, D. (author), Sinke, J. (author), Teuwen, Julie J.E. (author)
The paper addresses the role played by the cure stage of a vacuum assisted resin transfer molding process in residual stresses generation. The Airstone 780E epoxy resin and Hardener 785H system broadly used in the wind turbine blade industry has been used in this study. The viscous–elastic properties of the resin have been characterized and...
journal article 2020
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Apostolidis, P. (author), Liu, X. (author), Erkens, S. (author), Scarpas, Athanasios (author)
Asphalt binders incorporating different modifiers is a common practice but empirically driven in most of the cases. Therefore, the fundamental understanding of modification mechanisms in asphalt binders is needed to design polymer modified binders in a controllable manner, especially today in which new modification technologies are proposed....
journal article 2020
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van Veen, Dennis (author)
Additive manufacturing (AM) is currently making a transition from mainly being used for prototyping to an alternative for conventional production methods. AM provides more freedom in design geometry combined with the possibility to produce (complex) products in low quantities. As a result, the need arises for printed parts with consistent...
master thesis 2019
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Canossa, S. (author), Filonenko, G.A. (author)
Every measurement technique operates on a given timescale and measurements using emissive small molecule sensors are no exception. A family of luminescent sensors providing first optical characterization of dynamic phenomena in polymers at a timescale of several microseconds is described. This performance originates from the dynamics...
journal article 2019
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van Leeuwen, Robbie (author)
Epoxy resins are increasingly used in critical structural components with widespread applications in the transportation, construction and energy industries. The wind energy sector is one of the fastest growing commercial markets for epoxy resins, meaning that the structural behaviour of epoxy resins is becoming a key area of research, especially...
master thesis 2018
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Chen, X. (author), Yuan, C. (author), Wong, C.K.Y. (author), Zhang, G. (author)
A molecular modeling strategy is proposed to describe the temperature (T) dependence of solubility parameter (?) for the amorphous polymers which exhibit glass-rubber transition behavior. The commercial forcefield “COMPASS” is used to support the atomistic simulations of the polymer. The temperature dependence behavior of ? for the polymer is...
journal article 2011
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Bosma, J.H. (author)
To diagnose and treat colon cancer a colonoscopy is usually performed. Current colonoscopy is performed by advancing a colonoscope (scope) through the tortuous colon. However, the flexible scope often buckles when advanced. This can cause discomfort and pain for the patient and can make the examination of the colon difficult for the endoscopist....
master thesis 2010
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Chen, X. (author), Yuan, C.A. (author), Wong, K.Y. (author), Zhang, G.Q. (author)
Molecular dynamics (MD) and molecular mechanical (MM) analysis are carried out to provide reliable and accurate model for emeraldine base polyaniline. This study validate the forcefields and model with the physical and mechanical properties of the polyaniline. The temperature effects on non-bond energy, potential energy and solubility parameter...
journal article 2010
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van der Put, T.A.C.M. (author)
Based on the deformation kinetics approach, the theoretical derivation is given of the empirical WLF-equation of the time–temperature equivalence. The same is done for annealing at glass transition. The derivation provides a general theory for any loading history and replaces the inconsistent free volume model.
journal article 2010
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Matthias, H. (author), Röder, T. (author), Wehrspohn, R.B. (author), Kitzerow, H.S. (author), Matthias, S. (author), Picken, S.J. (author)
Active tuning of photonic crystals can be achieved by filling the porous structures with liquid crystals. Here, the director field in macropores was studied by fluorescence confocal polarizing microscopy. For this purpose, the photonic crystal was infiltrated with a glass-forming liquid crystalline polymer, the sample was cooled below the glass...
journal article 2005
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Jaroszynski, J. (author), Popovic, D. (author), Klapwijk, T.M. (author)
Studies of low-frequency resistance noise show that the glassy freezing of the two-dimensional electron system (2DES) in Si in the vicinity of the metal-insulator transition (MIT) persists in parallel magnetic fields B of up to 9 T. At low B, both the glass transition density ng and nc, the critical density for the MIT, increase with B such that...
conference paper 2004
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Woeltgens, P.J.M. (author), Dekker, C. (author), Koch, R.H. (author), Hussey, B.W. (author), Gupta, A. (author)
journal article 1995
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Woeltgens, P.J.M. (author), Dekker, C. (author), Gielkens, S.W.A. (author), De Wijn, H.W. (author)
journal article 1995
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