m(CH 2 =CH)
+
n(CH 2 =CH)
|
|
CONH 2
CONH
|
CH 2
|
CONH
|
CH 2 =CH
Acrylamide
N,N’-methylene-bis-acrylamide
R•
…-(CH 2 -CH) m -(CH 2 -CH) n -…
|
|
CONH 2
CONH
|
CH 2
|
CONH
|
…-CH 2 -CH-…
Cross-linked
poly(acrylamide)
a
Fig. 12 (a) Free-radical crosslinking copolymerization of acrylamide and N,N
0 -methylene(bis)
acrylamide. (b, c) Gel-fraction yield plotted against reaction time for the case of conventional
freezing (b) and low-temperature quenching (c). Gelation temperatures are indicated. (Plotted
based on the data from [23])
Basic Principles of Cryotropic Gelation
77