-
isotactic polypropylene by the
Italian firm
Montecatini from 1957 onwards.
Syndiotactic polypropylene was also
first synthesized by Natta.
Interest in polypropylene...
- triads. An
isotactic triad (mm) is made up of two
adjacent m diads, a
syndiotactic triad (also
spelled syndyotactic) (rr)
consists of two
adjacent r diads...
- with free radicals. Ziegler–Natta
polymerization can
produce an
ordered syndiotactic polystyrene with the
phenyl groups positioned on
alternating sides of...
- with polypropylene.
Stereoregular poly(1-alkene) can be
isotactic or
syndiotactic depending on the
relative orientation of the
alkyl groups in polymer...
-
isotactic polypropylene,
which is hard and used in re-usable
plastic containers. 3
creates syndiotactic polypropylene,
which is
rubbery and semi-crystalline....
-
substituents on the same side),
atactic (random
placement of substituents), and
syndiotactic (alternating
placement of substituents).
Polymer morphology generally...
- polypropylene,
while C2
symmetric metallocene 2 and Cs
symmetric metallocene 3
catalytic systems produce isotactic polymer and
syndiotactic polymer, respectively....
- In the
presence of
catalysts lactide polymerize to
either atactic or
syndiotactic polylactide (PLA),
which are
biodegradable polyesters. PLA is an example...
-
corresponding isotactic (like
substituents all on the same side) and
syndiotactic (like
substituents of
alternate repeating units on the same side) polymers...
-
polymerized to
polylactic acid (polylactide).
Depending on the catalyst,
syndiotactic or a
heterotactic polymers can result. The
resulting materials, polylactic...
