Biomedical Engineering Reference
In-Depth Information
Fig. 11.11
Composition of the BABS27 copolymer as a function of chain size. Reprinted from
[
57
] with the permission of the copyright holder Elsevier 2002
where
R4
D
CO
.
CH
2
/
4
COO
.
CH
2
/
4
O
,
R8
D
CO
.
CH
2
/
8
COO
.
CH
2
/
4
O
,
and where
are the number of A and B units. The inset reports an expansion
of a region of the spectrum. The peaks in the inset are due to chains with 11, 12,
and 13 repeat units and the base peak in the spectrum is
m
and
n
A
6
B
6
. MS peaks due to
A
5
B
6
,
A
6
B
5
,
A
6
B
7
,and
A
7
B
7
are intense. Chain statistics was applied and the re-
sult was
c
A
D 0:46
(
c
A
is the molar fraction of adipate units), which compares well
with
obtained from NMR analysis. Figure
11.11
reports the composition
for the BABS27 copolymer as a function of chain size [
57
]. The points are the val-
ues determined experimentally. The line is the prediction of (
11.11
). The agreement
between the two data sets is excellent.
c
A
D 0:47
References
1.
P.C.
Painter,
M.M.
Coleman,
Fundamentals
of
Polymer
Science
,
Technomic
Publ.,
Lancaster, 1997
2.
P. Rempp, E.W. Merril,
Polymer Synthesis, 2nd edition
, Huthig- Wepf, Basel, 1991
3.
R.H. Boyd, P.J. Phillips,
The Science of Polymer Molecules
, Cambridge University Press,
NY, 1993
4.
S. Kuchanov, H. Slot, A. Stroeks, Prog. Polym. Sci. 29, 563-633 (2004)
5.
E. Marechal, A. Fradet in edited by G. Allen.
Comprehensive Polymer Science, volume 5
,
pp. 289-290, Pergamon Press, Oxford, 1989
6.
M.S. Montaudo, C. Puglisi, F. Samperi, G. Montaudo, Macromolecules 31, 8666-8676 (1998)
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