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wide range of molecular weights (Vold et al. (2006), Biomacromolecules 7,
2136-2146)
From such data we may calculate parameters describing the chain stiffness,
such as the persistence length or C
∞
(to be discussed later in the course). Just
note that alginates are more extended than pullulan. The latter is a very
flexible chain because if its
α
-1,6-linkages (Section 1.6)
10
100
1000
10,000
100,000
1,000,000
10,000,000
M (g/mol)
R
g
(nm)
10
100
1000
10000
10,000
100,000
1,000,000 10,000,000
M
[
!
] (ml/g)
Figure 22. R
G
-M and [
η
]-M relationships for alginate and
pullulan