- chemistry, a
siloxane is an
organic compound containing a
functional group of two
silicon atoms bound to an
oxygen atom: Si−O−Si. The
parent siloxanes include...
-
Polyvinyl siloxane (PVS), also
called poly-vinyl
siloxane,
vinyl polysiloxane (VPS), or vinylpolysiloxane, is an addition-reaction
silicone elastomer...
-
Usually the Si and N have
organic substituents. They are
analogous to
siloxanes, with -NR- (R = alkyl, aryl)
replacing -O-. One
illustrative family of...
- substituents, e.g., [(CH3)2SiO]n and [(C6H5)2SiO)]n. All
polymerized siloxanes or polysiloxanes,
silicones consist of an
inorganic silicon–oxygen backbone...
- 2) and may have
small amounts of
hydrogen sulfide (H 2S),
moisture and
siloxanes. The
methane can be
combusted or
oxidized with oxygen. This
energy release...
- H2O
Silanols tend to
dehydrate to give
siloxanes: 2 R 3SiOH → R 3Si-O-SiR 3 + H2O
Polymers with
repeating siloxane linkages are
called silicones. Compounds...
-
harmful effects on
organisms in the environment" have been
noted for
siloxanes. PDMS is nonbiodegradable, but is
absorbed in
waste water treatment facilities...
-
abundant siloxanes in the environment, e.g. in
landfill gases. D4 and D5 have
attracted attention because they are pervasive.
Cyclic siloxanes can be detected...
-
relatively high
thermal stability and
their lubricating properties. Like all
siloxanes (e.g., hexamethyldisiloxane), the
polymer backbone consists of alternating...
- low-molecular-weight
siloxanes volatilise into biogas. When this gas is
combusted in a gas engine, turbine, or boiler,
siloxanes are
converted into silicon...
