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The fracture behavior of composite rubber particle-toughened polymethylmethacrylate has been investigated over a wide range of test speeds, encompassing impact conditions. When the entanglement density of the matrix was increased and its glass transition t ...
The core–shell structure of a range of acrylic–acrylic latexes has been investigated by combining different specimen preparation methods with transmission electron microscopy (TEM), dark-field scanning transmission electron microscopy (DSTEM) and low-volta ...
2007
Polymethylmethacrylate (PMMA) is used in many applications requiring good optical properties, resistance to ageing and resistance to UV irradiation, in spite of its relatively poor mechanical response to impact loading. In order to extend the range of appl ...
EPFL2007
Polymer particles with micro- and nanoscale anisotropy have received increasing interest for their ability to simultaneously present different physical- and chemical properties. In this communication, we demonstrate that gold nanocrystals (NCs) can be sele ...
2009
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The asphalt rubber blends design is an empirical procedure and is quite sensitive to the variability of the components properties. A better understanding of the physical phenomenon involved during the curing process is a prerequisite step to propose a rati ...
2006
Sulfur poisoning in a strontium doped lanthanum cobaltite (LSC) cathode current collection layer was revealed in a solid oxide fuel cell (SOFC) tested in repeat-element and stack configuration. Sources of sulfur contamination, other than trace SOx in air, ...
The inverse-emulsion polymn. of acrylamide and its copolymn. with quaternized acrylate or methacrylate was studied in the presence of various surfactants. The obtained latexes are transparent and have particle diams. as low as 100 nm and enhanced long-term ...
Coagulated SBR or nitrile rubber latexes with low salt contents, suitable for processing in belt or bar driers, are prepd. by adding mixts. of NaCl and quaternary ammonium polymers to the latexes. Thus, an 18%-solids nitrile rubber latex contg. 0.4 phr pol ...
A chemist, Karen Wetterhahn died after a cutaneous exposure to dimethylmercury despite wearing latex gloves. Lately, it was found that this compound permeates the latex almost immediately. This accident could have been avoided if dimethylmercury was no mor ...
