Biomedical Engineering Reference
In-Depth Information
Chapter 8
Extension of Vine-Twining
Polymerization by Phosphorylase
Catalysis
8.1
Selective Inclusion of Amylose in Vine-
Twining Polymerization
8.1.1
Amylose Selectively Includes One from Mixtures
of Two Resemblant Guest Polymers
As described in Chapter 7, hydrophobic polyethers, polyesters,
a poly(ester-ether), and polycarbonates having appropriate
methylene chain lengths were employed as the guest polymers for
the vine-twining polymerization to form the corresponding inclusion
complexes with amylose. On the basis of the results in the studies
using these guest polymers, the suitable hydrophobicity of the
guest polymers had been considered to be a very important factor
in whether amylose was include them or not. The aforementioned
property of amylose that included limited guest polymers with
appropriate hydrophobicity in the vine-twining polymerization was
applied to perform the selective inclusion toward two resemblant
guest polymers.
For example, the vine-twining polymerization was performed
in the presence of a mixture of POXT (
M
= ~1800) and PTHF (
M
n
n
