Poly(styrene-co-n-butyl acrylate) Nanofibers with Excellent Stability against Water by Electrospinning from Aqueous Colloidal Dispersions

2009 ◽  
Vol 42 (16) ◽  
pp. 6147-6151 ◽  
Author(s):  
Aleksandar Stoiljkovic ◽  
Rajan Venkatesh ◽  
Evgueni Klimov ◽  
Vijay Raman ◽  
J. H. Wendorff ◽  
...  
Keyword(s):  
Butyl Acrylate ◽  
Colloidal Dispersions ◽  
Excellent Stability

Solvent-assisted osmium staining of butyl acrylate and ethylene-propylene-diene in a styrene acrylonitrile matrix

1993 ◽  
Vol 51 ◽  
pp. 900-901 ◽  
Author(s):  
Gudrun A. Hutchins
Keyword(s):  
Butyl Acrylate ◽  
Room Temperature ◽  
Osmium Tetroxide ◽  
Staining Procedure ◽  
Reactive Site ◽  
Ethylene Propylene ◽  
Minimal Distortion ◽  
Styrene Acrylonitrile ◽  
Engineering Polymers ◽  
Effective Reaction

In order to optimize the toughening effect of elastomers in engineering polymers, it is necessary to characterize the size, morphology and dispersion of the specific elastomer within the polymer matrix. For unsaturated elastomers such as butadiene or isoprene, staining with osmium tetroxide is a well established procedure. The residual carbon-carbon double bond in these materials is the reactive site and forms a 1,2-dilato complex with the OsO4. Incorporation of osmium tetroxide into the elastomer not only produces sufficient contrast for TEM, but also crosslinks the elastomer sufficiently so that ultramicrotomy can be accomplished at room temperature with minimal distortion.Blends containing saturated elastomers such as butyl acrylate (BA) and ethylene propylene diene monomer (EPDM) cannot be stained directly with OsO4 because effective reaction sites such as C=C or -NH2 are not available in sufficient number. If additional reaction sites can be introduced selectively into the elastomer by a chemical reaction or the absorption of a solvent, a modified, two-step osmium staining procedure is possible.

USS 18-8S and 18-8L

Alloy Digest ◽  
1975 ◽  
Vol 24 (2) ◽  
Keyword(s):  
Fracture Toughness ◽  
High Strength ◽  
Heat Treating ◽  
Cryogenic Temperatures ◽  
United States Steel Corporation ◽  
Temperature Performance ◽  
Aisi Type ◽  
Shock Resistance ◽  
Type 304 ◽  
Excellent Stability

Abstract USS 18-8S (AISI Type 304) and USS 18-8I (AISI Type 304L) are austenitic chromium-nickel steels that are easy to fabricate and weld. They combine high strength with excellent stability and shock resistance, even at cryogenic temperatures. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on low temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-305. Producer or source: United States Steel Corporation.

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