Journal ArticleDOI
Correlation of binary polyolefin phase behavior with statistical segment length asymmetry
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TLDR
In this article, the segment-segment interaction parameter χ is reported as a function of temperature for four pairs of polyolefin based on polyethylene, poly(ethylenepropylene), poly(ethylethylene) and poly (ethylene-co-ethylthylene), and a correlation between the magnitude of χ and the statistical segment length asymmetry was established.Abstract:
The segment-segment interaction parameter χ is dreported as a function of temperature for four pairs of polyolefin based on polyethylene, poly(ethylenepropylene), poly(ethylethylene) and poly(ethylene-co-ethylethylene). These results are not anticipated by the traditional Flory-Huggins heat of mixing. However, a correlation between the magnitude of χ and the statistical segment length asymmetry was established. This contribution to χ is attributed to the mismatch in polymer conformational size that must be accomodated in order to achieve a homogeneous mixtureread more
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Journal ArticleDOI
Patterning with block copolymer thin films
TL;DR: In this article, the authors review a variety of mechanisms for gaining control over block copolymer order as well as many of the applications of these materials and the potential of perfecting long-range two-dimensional order over a broader range of length scales and the extension of these concepts to functional materials and more complex architectures.
Journal ArticleDOI
Modes of Crystallization in Block Copolymer Microdomains: Breakout, Templated, and Confined
TL;DR: The authors examined the melt and solid-state structures of a series of diblock copolymers containing polyethylene as the minority block, with a rubbery hydrocarbon majority block.
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Integral Equation Theories of the Structure, Thermodynamics, and Phase Transitions of Polymer Fluids
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Self-Assembly of Peptide-Based Diblock Oligomers
TL;DR: The synthesis and supramolecular organization of a novel class of rod-coil type diblock oligomers, which consist of a rodlike α-helical oligopeptide segment that is conjugated to an oligo(styrene) coil, will be discussed.
Book ChapterDOI
PRISM theory of the structure, thermodynamics, and phase transitions of polymer liquids and alloys
TL;DR: The recent development of a microscopic theory of the equilibrium properties of polymer solutions, melts and alloys based on off-lattice Polymer Reference Interaction Site Model (PRISM) integral equation methods is reviewed in this paper.