[en] Polymer surface modification has been a significant issue over two decades in many fields of application. Among modification techniques developed to date, surface grafting has emerged a simple, useful, and versatile approach to improve surface properties of polymers for a wide variety of applications. Grafted Polymer Surfaces has became a useful tool for Bio-molecule display and capture. Furthermore all polymeric materials that come into contact with biological environments are purposely surface modified, such that surface bio-interactions of the material may be turned for optimum performance in a particular environment or application. Properties such as antibacterial, surface wettability and bio-compatibility may be enhanced. In this study we have used sequential and simultaneous UV grafting of Acrylic Acid: Butyl Vinyl Ether copolymers onto polypropylene. In sequential grafting, Benzophenone initiator was initially irradiated with polypropylene surfaces using 1000 W Hg/Xe Lamp. The irradiated polypropylene samples were then either thermally or photochemically reacted with different ratios of AA and BVE. Grafting was confirmed by ATR IR spectroscopy. AA: carbonyl stretch at 1712 cm-1 and the BVE the ether band at 900 cm-1

[en] Evidence is given for the existence of a spin-5 boson resonance from the analysis of the reaction π^-p → K⁺K^- n at 62 GeV incident momentum. A simplified amplitude analysis with a Breit-Wigner ansatz leads to a mass of 2307 +- 6 MeV and a width of 245 +- 20 MeV. The quantum numbers of the resonance are Jsup(P) = 5^-, C = -1, and very probably Isup(G) = 1⁺. (orig.)