Spinodal-Assisted Crystallization in Polymer Melts
نویسندگان
چکیده
P. D. Olmsted,1,* W. C. K. Poon,2,† T. C. B. McLeish,1 N. J. Terrill,3 and A. J. Ryan3 1Department of Physics & Astronomy and Polymer IRC, University of Leeds, Leeds LS2 9JT, England 2Department of Physics & Astronomy, The University of Edinburgh, Mayfield Road, Edinburgh EH9 3JZ, Scotland 3Department of Chemistry, University of Sheffield, Brookhill, Sheffield S3 7HF, England (Received 3 February 1998)
منابع مشابه
Formation of Poly(vinylidene fluoride) Nanofibers Part II: the elaboration of incompatibility in the electrospinning of its solutions
Poly(vinylidene fluoride) (PVDF) fibers with two molecular weights were prepared via electrospinning process. In this process, the concentration of spinning depended drastically on the gelation process. Also, it was experimentally smaller than obtained concentration in the solution entanglement number approach (SENA). Proof of this incompatibility was explained by the properties of PVDF a...
متن کاملContinuous refinement of the microstructure during crystallization of supercooled Zr41Ti14Cu12Ni10Be23 melts
Isothermal crystallization studies are performed on Zr41Ti14Cu12Ni10Be23 melts between the liquidus and the glass transition temperature. The resulting time–temperature-transformation diagram is in good agreement with the data obtained from containerlessly processed samples. The various solidification products are examined by electron microprobe. The investigations reveal the morphology and typ...
متن کاملEffective Interactions, Structure, and Phase Behavior of Lightly Tethered Nanoparticles in Polymer Melts
We have generalized the microscopic polymer reference interaction site model (PRISM) theory to study the structure and phase behavior of polymer-tethered spherical nanoparticles in a dense homopolymer melt. In the absence of a polymer matrix, fluids of such hybrid nanoparticles show strong concentration fluctuations indicative of aggregate formation and/or a tendency for microphase separation a...
متن کاملContinuum theory of polymer crystallization.
We present a kinetic model of crystal growth of polymers of finite molecular weight. Experiments help to classify polymer crystallization broadly into two kinetic regimes. One is observed in melts or in high molar mass polymer solutions and is dominated by nucleation control with G approximately exp(1/TDeltaT), where G is the growth rate and DeltaT is the supercooling. The other is observed in ...
متن کاملInterplay between two phase transitions: crystallization and liquid-liquid phase separation in a polyolefin blend.
The interplay between liquid-liquid phase separation (LLPS) and crystallization at several compositions in statistical copolymer blends of poly(ethyleneco-hexene) and poly(ethylene-cobutene) has been examined by optical microscopy (OM), atomic force microscopy (AFM), and differential scanning calorimetry (DSC). The phase contrast optical microscopy shows interconnected bicontinuous structures f...
متن کامل