Table 1 Examples of systems for the preparation and study of polymerization-type cryogels
Monomers and crosslinkers
Solvent
a
Initiating system
Temperature
of cryotropic
gelation (
C) What was done and reported
References
I. Chemical initiation
Acrylamide +
N,N
0
-methylene-bisacrylamide
Water (T
0
¼ 0
C) APS + TMEDA
À10 to
À30 Preparation of sponge-like
poly(acrylamide) cryogels
[35, 90,
91]
Study of the influence of
cryostructuring conditions on
the physicochemical and
structural characteristics of
resulting gel materials
[91, 105–
114]
Study of the gel formation
dynamics
[108, 115,
116]
Formamide
(T
0
¼ +2.9
C)
À8
Preparation of poly(acrylamide)
cryogels in organic medium
[90, 91,
106]
Water/dimethyl
sulfoxide
mixtures
À18
Preparation of poly(acrylamide)
cryogels, study of their
swelling behavior,
mechanical properties, and
porous structure
[117, 118]
Acrylamide + allyl glycidyl ether +
N,N
0
-methylene-bis-acrylamide
Water
APS + TMEDA
À10 to
À30 Preparation of epoxy-containing
poly(acrylamide) cryogels,
study of their properties and
porous structure
[91, 119–
125]
Acrylamide + 2-acrylamido-2methylpropane sulfonic acid +
N,N
0
-methylene-bis-acrylamide
Water-in-oil
emulsion
APS + TMEDA
À4
Preparation and study of
pH-responsive cryogel
microbeads
[126]
Acrylamide + 2-acrylamido-2methylpropane sulfonic acid +
N,N
0
-methylene-bis-acrylamide
Water
APS + TMEDA
À18
Preparation of pH-responsive
cryogels, study of their
pH-dependent swelling
behavior and wide pore
morphology
[127]
(continued)
A Brief History of Polymeric Cryogels
9