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Chemicals, plastics and rubber industries

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Ultralow energy ion beam surface modification of low density polyethylene

Article Abstract:

A study with ultralow energy ion beam system is used to deliver Ar(super +) and O(super +) ions at controlled doses and energies to a low-density polyethylene polymeric sample under vacuum conditions is presented. The result indicates that in low-pressure nonequlibrium plasma treatment of polymers, low energy plasma ions may be responsible for surface chemical modification.

Author: Bradley, James W., Shenton, Martyn J., Berg, Jaap A. van den, Armour, David G., Stevens, Gary C.
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
Plasma chemistry

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Hydrogen production in the heavy ion radiolysis of polymers. 1. Polyethylene, polypropylene, poly(methyl methacrylate), and polystyrene

Article Abstract:

The production of molecular hydrogen in the radiolysis of isotactic polypropylene (PP), poly (methyl methacrylate) (PMMA), and polystyrene (PS) with protons and carbon ions are investigated on high-density polyethylene (PE) to give a comprehensive survey of the dependence of molecular hydrogen yields on particle linear energy transfer (LET), in the range 0.2-800 eV/nm.

Author: LaVerne, Jay A., Z. Chang
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2000
Observations, Energy transfer, Radiolysis

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Density functional theory of realistic models of in slit pores: Comparison with Monte Carlo simulations

Article Abstract:

The atomistically detailed realistic polymer models treated within the well-known density functional theory (DFT) approach to study the properties of polymers near surfaces are demonstrated. It is concluded that the theory generally performs best when the wall-polymer interaction strength is comparable to polymer-polymer interactions.

Author: Nath, Shyamal K., Curro, John G., McCoy, John D.
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
Usage, Density functionals, Density functional theory

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Subjects list: Research, Polymers, Polyethylene, Chemical properties, Atomic properties
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