Zobrazeno 1 - 10
of 529
pro vyhledávání: '"BERNHARD WUNDERLICH"'
Publikováno v:
Molecular Crystals and Liquid Crystals. 556:74-83
A short review about the structure, condition of formation, and reorganization behavior of the mesophase of isotactic polypropylene, summarizing recent work of the authors, is provided. Emphasis is put on the presentation of data collected by novel a
Autor:
Doris Pospiech, Andreas Wurm, Kathrin Eckstein, Dieter Jehnichen, Christoph Schick, René Androsch, Evgeny Zhuravlev, Bernhard Wunderlich
Publikováno v:
Macromolecules. 45:3816-3828
The crystallization and nucleation kinetics of poly(e-caprolactones) (PCL) with molar masses between 1.4 and 6.1 kDa and negligible number of heterogeneous nuclei has been investigated by differential fast scanning calorimetry (DFSC) applying scannin
Autor:
Bernhard Wunderlich
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 109:1117-1132
This review concerns the “termination of crystallization or ordering of flexible, linear macromolecules” before the transition from the amorphous phase reaches thermodynamic equilibrium. It makes use of the precision of hindsight in interpretatio
Publikováno v:
Polymer. 53:277-282
Differential fast scanning chip calorimetry has been employed to study nucleation/ordering during annealing the glass of quenched isotactic polypropylene. Initially non-ordered samples were annealed below the glass transition temperature for differen
Publikováno v:
Thermochimica Acta. 522:100-109
The perfection, reorganization, and isotropization of the mesophase of isotactic polypropylene were investigated by fast scanning calorimetry (FSC). The analysis was made at different heating rates, to evaluate the isotropization temperature of the i
Autor:
Bernhard Wunderlich
Publikováno v:
Thermochimica Acta. 522:2-13
When crystallizing macromolecules, one needs to recognize that they are sufficiently long to connect neighboring phases. This coupling between the phases is the reason that on ordering, practically all polymers develop a globally metastable, semicrys
Publikováno v:
Polymer. 52:1983-1997
The recently developed differential fast scanning calorimetry (DFSC) is used for a new look at the crystal growth of poly(ɛ-caprolactone) (PCL) from 185 K, below the glass transition temperature, to 330 K, close to the equilibrium melting temperatur
Autor:
Bernhard Wunderlich
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 106:81-84
The first measurements in our laboratory of some 55 years ago dealt with adiabatic calorimetry of linear, semicrystalline polyethylene. Quickly it became obvious that time needed to be controlled to study the metastable and unstable states. Shortly t
Publikováno v:
Polymer. 52:1107-1115
Fast scanning chip calorimetry (FSC) has been employed to study the kinetics of formation of the mesophase of random copolymers of propylene and 1-butene from the glassy amorphous state and its reorganization on heating. The experiments performed con
Autor:
Bernhard Wunderlich
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 106:85-91
The goal of the thermal analysis experiments is to extract scientifically and technological important information from measurements of “heat.” Unfortunately, there exists no direct heat meter. In fact, the assessment of the quantity heat has a co