BUKU BASA INGGRIS KAKAIT KARO «HETEROTACTIC»
Temukaké kagunané saka
heterotactic ing pilihan bibliografi iki. Buku kang kakait dening
heterotactic lan pethikan cekak kang padha kanggo nyediyakaké panggunané ing sastra Basa Inggris.
1
Synthetic Biodegradable Polymers
28) [66] produced heterotactic-enriched PLA by a chain-end control mechanism.
In this process, changing an isopropyl substituent to ethyl resulted in a significant
decrease in heteroselectivity from Pr 1⁄4 0.90–0.79 [66]. Chisholm and ...
Bernhard Rieger, Andreas Künkel, Geoffrey W. Coates, 2012
2
Introduction to Polymer Science and Chemistry: A ...
Thus, an isotactic triad is mm, a heterotactic triad is mr, and a syndiotactic triad rr.
Several such configurational sequences are illustrated in Table 2.1. Each of
these, and even more complicated combinations, can be designated through
NMR ...
3
Handbook of Ring-Opening Polymerization
Site control Chain-end control (metal catalyst) (metal and organic catalyst) rac-
Lactide Isotactic Isotactic or heterotactic meso- Lactide Syndiotactica Syndiotactic
or heterotactic a Assuming that no exchange reactions occur at the metal. tures ...
Philippe Dubois (Prof.), Olivier Coulembier, Jean-Marie Raquez, 2009
4
Stereoselective Polymerization with Single-Site Catalysts
It has been reported that Tg values increase almost linearly with increasing r diad
content.8 Accordingly, highly heterotactic PMMA(96% rm content) displays an
intermediate Tg value of 91 ◦C. All three stereor- egular PMMA isomers exhibit ...
Lisa S. Baugh, Jo Ann M. Canich, 2007
5
Macroporous Polymers: Production Properties and ...
O OR R n O O O H H H O O O O O O O O O S S S S S S R R O n + S S OR 0.5
O O D,L-LA (rac-lactide) 0.5 Atactic PLA Stereoblock isotactic PLA
O O O O O O O O O O n O Heterotactic PLA n O R R R O O O R n OR OR Figure
16.5 Possible ...
Bo Mattiasson, Ashok Kumar, Igor Yu. Galeaev, 2009
6
Advances in Organometallic Chemistry
H O X O O O O O O O OOOO O OO On {LONR}Ln(N(SiMe3)2) toluene or THF C n
20 (S,S)-lactide (R,R)-lactide heterotactic-enriched PLA Mono(guanidinate) rare-
earth metal bis(amide) complexes (cf. Scheme 2.303) have been reported to ...
Anthony F. Hill, Mark J. Fink, 2013
7
Macromolecular Design of Polymeric Materials
Hatada. Table 3 Polymerization of MMA with [(C5Me5)2SmH]2 Source: Ref. 27.
Very recently, a combination of r-C4H9Li and bis(2,6-di-?m-butylphenoxy)
methylaluminum [MeAl(ODBP)2] was found to be a heterotactic-specific initiator
for the ...
8
Annual Review of NMR Spectroscopy APL
Carbon 7 is said to be in the heterotactic position since carbon 5 has the same
configuration but HHAXHCXHXHHHX I I I I I I I I I I I —C—C—C—C—C—C—C—
C—C—C—C— I I I I I I I I I I I x HBH HDH H H H x H H 1234567891011 FIG. 1.
9
Molecular Characterization and Analysis of Polymers
Since there are twice as many possible arrangements of heterotactic, a random
mixture of triads would result in 25% isotactic, 25% syndiotactic, and 50%
heterotactic triads. This could be an alternative definition of an atactic polymer. It
should ...
John M. Chalmers, Robert J. Meier, 2008
10
Chemical Reactions: Quantitative Level of Liquid and Solid Phase
With regard to the heterotactic triad content, a unique linear decrease is observed
, regardless of the type of interacting agent. Note that the corresponding slope
deviates slightly from unity. The results of Fig. 5 agree thoroughly with those ...
Gennadiĭ Efremovich Zaikov, Alfonso Jiménez, 2004
