Results 181 to 190 of about 21,977 (237)

An underestimated risk? Analysis of outdoor malaria transmission in an urban area of Southern Benin. [PDF]

open access: yesBMC Infect Dis
Konkon AK   +12 more
europepmc   +1 more source
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Dielectric Investigation of SBR-NBR and CR-NBR Blends

Journal of Elastomers and Plastics, 1994
SBR-NBR and CR-NBR blends were prepared with different con centrations, namely 0, 20, 40, 60, 80 and 100%, and measured dielectrically over a wide frequency range (10 -2 -10 6 Hz) and at different temperatures (-10°-25°C). The aim of the present work is
Ashraf A Mansour
exaly   +2 more sources

Effect of Plasma Polymerization on the Performance of Silica in NBR, EPDM and NBR/EPDM Blends

open access: yesRubber Chemistry and Technology, 2008
Abstract The surface modification of precipitated silica powders by plasma-polymerization with acetylene monomer in order to improve their performance in NBR, EPDM and NBR/EPDM rubber blends, by matching the surface energies of the silica fillers of the rubbers, is the subject of this study. Silica, used as reinforcing filler for elastomers, is
Tiwari, M.   +3 more
openaire   +3 more sources

Studies on NBR/PVC blends

open access: yesJournal of Applied Polymer Science, 1986
AbstractStudies conducted on butadiene–acrylonitrile copolymer (NBR)/poly(vinyl chloride) (PVC) blends at different temperatures indicate that an optimum temperature exists for the formation of a particular blend. The mechanical properties of the blends confirm this observation.
K. E. George   +2 more
openaire   +2 more sources

Effect of the size of the dispersed NBR phase in PVC/NBR blends on the stability of PVC to electron irradiation

Polymer, 2001
Abstract Acrylonitrile–butadiene copolymers (NBR) with different acrylonitrile contents were melt-mixed with poly(vinyl chloride) (PVC). The morphology of the blends was examined with transmission electron microscopy (TEM). The samples were also exposed to an electron beam and the chlorine-loss upon electron irradiation was monitored with electron ...
Chi-Ming Chan
exaly   +3 more sources

Influence of the swelling temperature and acrylonitrile content of NBR on the water swelling behaviors of silica-filled NBR vulcanizates

Journal of Industrial and Engineering Chemistry, 2009
Abstract Influence of the acrylonitrile content of NBR on the water swelling behaviors of silica-filled NBR composites at room temperature and 90 °C was studied. Variation of the water swelling behaviors with the silica content was also investigated. The water swelling ratios at 90 °C were on the whole higher than those at room temperature. The water
Sung-Seen Choi
exaly   +2 more sources

A Study of Mechanical and Optical Properties of an Alternating NBR and an Emulsion NBR

Rubber Chemistry and Technology, 1973
Abstract At low elongation, over the range of temperatures and frequencies studied, the dynamic properties (elastic modulus and loss factor) and activation energy for the glass-rubber transition are the same for highly alternating and emulsion copolymers of acrylonitrile and butadiene.
U. P. Mukherjee, C. Goldstein
openaire   +1 more source

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