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[en] Mineral filler magnesium oxide (MgO) has been modified by a grafting process initiated by electron beam treatment. The methacrylic acid (MAA), methyl methacrylate (MM) and maleic anhydride (MA) were used as modifying monomers. The products of performed modification has been investigated by FTIR, DSC and TG methods. Modified fillers have been used in compositions with polyethylene (LDPE). Structure of the samples has been investigated by the SEM method. Mechanical properties of selected samples have been studied and discussed. The optimal results depends on dose level which is specific for certain monomers, ratio and type of monomers used and for grafting process. This paper presents data released to influence the type of monomer on properties of grafted filler. The obtained samples of filling polyethylene were characterized generally by better dispersibility and some mechanical properties. (author)
Journal
No abstract available
Source
Michalik, J.; Smulek, W.; Godlewska-Para, E. (eds.); Institute of Nuclear Chemistry and Technology, Warsaw (Poland); [247 p.]; ISSN 1425-204X; 
; 2009; p. 38-40; CO-ORDINATED RESEARCH PROJECT NO. POL14431; PROJECT NO. 165/W-IAEA/2008/0; Also available from http://www.ichtj.waw.pl/ichtj/publ/annual/annual08.htm; 2 refs., 4 figs.
; 2009; p. 38-40; CO-ORDINATED RESEARCH PROJECT NO. POL14431; PROJECT NO. 165/W-IAEA/2008/0; Also available from http://www.ichtj.waw.pl/ichtj/publ/annual/annual08.htm; 2 refs., 4 figs.
No abstract available
Source
Institute of Nuclear Chemistry and Technology, Warsaw (Poland); 167 p; ISSN 1425-204X; ; Jun 1998; p. 104-105; 3 refs, 2 figs
; Jun 1998; p. 104-105; 3 refs, 2 figs
[en] Relationship between electron beam parameters (energy, energy spread, and electron beam distribution in irradiation zone), electrical cable geometry (thickness of polymer layers and metal wire diameter), construction (jacked, insulation) and dose distribution represented by the Dmax/Dmin coefficients were investigated. The simulations were performed using ModeCEB computer program (Lazurik et al., 2011) and then compared with the experimental data. It was demonstrated that computer simulations based on the ModeCEB program are sufficient for modeling absorbed dose distribution in the multi-layers circular objects irradiated with scanned electron beam. The calculations revealed (1) significant inhomogeneous circumferential dose distribution in polymeric sub-layers (2) relatively low influence of electron beam energy spectrum on homogeneity of irradiation and (3) high influence of beam divergence on the circumferential dose distribution. - Highlights: • Dose distribution simulation was performed using ModeCEB computer program. • Simulated and experimental data on dose homogeneity were compared. • High influence of EB divergence on the dose distribution was found
Journal
No abstract available
Source
Department of Chemistry, Warsaw University of Technology, Warsaw (Poland); Warsaw Branch of the Polish Chemical Society (Poland); 128 p; ISBN 978-83-60988-02-2; ; 2009; p. 113; ChemSession'09: 6. Warsaw seminar of the PhD students in chemistry; 6. Warszawskie Seminarium Doktorantow Chemikow ChemSession'09; Warsaw (Poland); 15 May 2009; Also available from Polish Chemical Society, ul. Freta 16, 00-227 Warsaw, Poland; 4 refs.
; 2009; p. 113; ChemSession'09: 6. Warsaw seminar of the PhD students in chemistry; 6. Warszawskie Seminarium Doktorantow Chemikow ChemSession'09; Warsaw (Poland); 15 May 2009; Also available from Polish Chemical Society, ul. Freta 16, 00-227 Warsaw, Poland; 4 refs.
[en] The mineral fillers can be modified by using unsaturated compounds: styrene, methacrylic acid and maleic anhydride (MA), following by irradiation with high energy electron beam. In presented paper the authors have used this method to change properties of bentonite Specjal, containing about 70% of pure montmorillonite. It has been shown that: (a) the particles obtained in this process can be good fillers for the production of composites; (b) maleic anhydride reacts via anhydride group with active ionic sites of bentonite, forming a salt-like compound. Irradiation with electron beam leads to the breakage of double bond in maleic anhydride and to the production of new organic phases
Source
Michalik, J.; Smulek, W.; Godlewska-Para, E. (eds.); Institute of Nuclear Chemistry and Technology, Warsaw (Poland); 235 p; ISSN 1425-204X; ; 2006; p. 34-35; KBN GRANT NO. PBZ-KBN-095/T08/2003; Also available from http://www.ichtj.waw.pl/ichtj/publ/annual/anrep05.pdf; 3 refs., 2 figs.
; 2006; p. 34-35; KBN GRANT NO. PBZ-KBN-095/T08/2003; Also available from http://www.ichtj.waw.pl/ichtj/publ/annual/anrep05.pdf; 3 refs., 2 figs.
No abstract available
Source
Michalik, J.; Smulek, W.; Godlewska-Para, E. (eds.); Institute of Nuclear Chemistry and Technology, Warsaw (Poland); 159 p; ISSN 1425-204X; ; 2010; p. 20-22; Also available from http://www.ichtj.waw.pl/ichtj/publ/annual/annual09.htm; 3 refs., 4 figs.
; 2010; p. 20-22; Also available from http://www.ichtj.waw.pl/ichtj/publ/annual/annual09.htm; 3 refs., 4 figs.
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