Results 231 to 240 of about 40,904 (265)

Kinetics of metastable states in block copolymer melts

The Journal of Chemical Physics, 1989
A theory is presented to describe the nucleation and subsequent growth of weakly inhomogeneous lamellar phases from a supercooled disordered phase. Detailed calculations are performed for the case of near-symmetric diblock copolymer melts, although the results have relevance for other physical systems in the Brazovskii ‘‘universality class ...
Glenn H. Fredrickson, Kurt Binder
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Chirality Transfer in Block Copolymer Melts: Emerging Concepts

ACS Macro Letters, 2015
Chirality transfer from molecule to assembly is a ubiquitous process, occurring in every class of self-assembling materials, from liquid crystals to biological matter. Yet, a basic understanding of the influence of molecular chirality on the mesoscopic assembly of block copolymers lags decades behind nearly all other aspects of their structure (e.g ...
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Tracer diffusion in fluctuating block copolymer melts

Journal of Polymer Science Part B: Polymer Physics, 1996
We present a theoretical investigation of the tracer diffusion of diblock copolymers and homopolymers in a thermally fluctuating block copolymer melt above the order-disorder transition (ODT) temperature. Entanglement effects and differences in monomeric friction coefficients are ignored ; hence, the theory should be most applicable to short copolymers
Cora M. Leibig, Glenn H. Fredrickson
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Multiple ordered phases in a block copolymer melt

Macromolecules, 1992
A poly(ethylenepropylene)-poly(ethylethylene) (PEP-PEE) diblock copolymer conctaining 65 vol% PEP was studied by SANS and rheological measurements. Four distinct phases were identified as a function of temperature: three ordered phase at low temperatures and a disordered phase at high temperatures. The order-disorder and disorder-order transitions were
ALMDAL, K, KOPPI, KA, BATES, FS, Mortensen, Kell   +3 more
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Melt Flow Properties of Block Copolymers

1985
The appearance of commercial large scale production of a number of different block copolymer systems has stimulated interest in new applications and new products; this necessitates a better understanding and knowledge of the processing behaviour and, therefore, also a better understanding of the rheological properties of block copolymers in the melt ...
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Melt phase behaviour of block copolymers

1998
Abstract A remarkable property of block copolymers is their ability to self-assemble in the, melt into a variety of ordered structures with nanoscale periodicities. These structures can be controlled by varying the composition of the block copolymer or the segregation between blocks (via temperature or degree of polymerization).
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The standard Gaussian model for block copolymer melts

Journal of Physics: Condensed Matter, 2001
As a result of important advances over the last decade, block copolymer melts have become an excellent model system for studying fundamental phenomena associated with molecular self-assembly. During this time, good quantitative agreement has been achieved between theory and experiment in regards to equilibrium phase behaviour, and with it has emerged a
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Effect of Microstructural Evolution on Mechanical Properties and Fracture Modes of AlSi10Mg Blocks Fabricated by Selective Laser Melting after Stress Relief Annealing

Advanced Engineering Materials, 2022
Jianzhu Li, Yujie Li, Yujie Li
exaly  

Block Copolymer Melts

2007
V. Castelletto, I. W. Hamley
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Modified Maquenne melting-point block

Journal of Chemical Education, 1945
F. W. Schneider, E. W. Blank
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