A large percentage of the hydrogels are prepared from
synthetic polymers such as polyacrylate, polyacrylamide
and polymethacrylates which are from fossil resources.
The excellent properties of most of these hydrogels notwithstanding,
their uses and applications are still limited
by poor degradability and non-renewability of fossil resources
[10]. These developments have stimulated intense
research activities on the preparation of hydrogels from
renewable resources and properties of hydrogels based
on starch [5], cellulose [11], hyaluronan [9], dextran
[12] and chitosan [13] have been reported in the literature.