Results 191 to 200 of about 2,862,810 (245)
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Probing Polymer/Polymer Interfaces
Journal of the American Chemical Society, 2002Infrared-visible sum frequency generation spectroscopy (SFG) has been used to study the interface between poly(vinyl-N-octadecylcarbamate-co-vinyl acetate) (Comb) and deuterated or hydrogenated polystyrene (dPS or hPS) films. Strong methyl symmetric and Fermi resonance bands associated with the alkyl side chains of the Comb polymer are observed in the ...
Gary P. Harp +2 more
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Chemical Reviews, 2020
Covalent polymers connected by non-covalent interactions constitute a fascinating set of materials known as supramolecular polymer networks (SPNs).
Danyu Xia +5 more
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Covalent polymers connected by non-covalent interactions constitute a fascinating set of materials known as supramolecular polymer networks (SPNs).
Danyu Xia +5 more
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1986
Publisher Summary This chapter discusses the properties of generic polymers. Polyethylene is the commonest of thermoplastics. They are often described as linear polymers that are the chains and are not cross-linked. That is why they soften if the polymer is heated, and the secondary bonds that bind the molecules to each other melt so that it flows ...
David R.H. Jones, Michael F. Ashby
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Publisher Summary This chapter discusses the properties of generic polymers. Polyethylene is the commonest of thermoplastics. They are often described as linear polymers that are the chains and are not cross-linked. That is why they soften if the polymer is heated, and the secondary bonds that bind the molecules to each other melt so that it flows ...
David R.H. Jones, Michael F. Ashby
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Polymer-Polymer Interdiffusion
Europhysics Letters (EPL), 1986We correct an earlier theory of polymer diffusion for a mixture of long (L) and short (S) chains in a melt, all chains being chemically identical. The mixing can be understood by analogy with the kinetics of polymer dissolution: up to a time τL (the reptation time of the L component) the L chains behave like a gel, progressively swollen by the S chains.
P. G. de Gennes, F. Brochard
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Electroluminescence of a Polymer Film with a Polymer/Polymer Interface
JETP Letters, 2019The effect of a two-dimensional quantum-confined structure formed at a polymer/polymer interface on the radiative recombination of excitons (i.e., electroluminescence) is investigated. It is shown that the implementation of such a structure in a polymer film leads to an increase in the emission intensity by more than two orders of magnitude and a ...
V. M. Kornilov +5 more
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Molecularly Imprinted Polymers.
Chemical Reviews, 2018Molecularly imprinted polymers are synthetic receptors for a targeted molecule. As such, they are analogues of the natural antibody-antigen systems. In this review, after a recounting of the early history of the general field, we specifically focus on ...
J. BelBruno
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Polymer/Solvent and Polymer/Polymer Interaction Studies [PDF]
, 1979 Abstract : The technique of gas chromatography has been used to investigate the solution properties of many solvents with a propargyl (acetylene-terminated) sulfone (PATS). In this case, unlike previous work on the RADEL polysulfone, no correlation between the strength of the specific interaction parameter and the solubility as determined from beaker ...
D. T. Magnuson +4 more
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Polymer-Polymer Interdiffusion
MRS Proceedings, 1984AbstractInterdiffusion of polymer chains plays an important role in establishing good adhesion at polymer interfaces as well as in the kinetics of phase separation and mixing in polymer blends. Reptation, a process in which a given linear chain crawls along a primitive path defined by the topological constraints due to the surrounding chains, is ...
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