ABSTRACT
Macroporous polymeric materials are gaining interest in biotechnology and biomedicine [1,2]. There are different approaches to prepare macroporous materials for freeze-drying [3], porogenation [4], microemulsion formation [5], gas-blowing technique [6], and phase separation [7,8]. Macroporous polymeric materials with open porous structures and controlled porosities are produced via cryogelation technology. The cryogelation (or gelation
CONTENTS
2.1 Introduction ..................................................................................................23 2.2 Concept of Cryogel Formation via Free-Radical Polymerization at
Subzero Temperatures ................................................................................. 24 2.2.1 Freezing Rate and Freezing Temperature ....................................25 2.2.2 Concentration and Composition of Gel Precursors in the
Initial Reaction Mixture .................................................................. 29 2.2.3 The Effect of Initiator Content on Cryogel Porous
Structure ............................................................................................33 2.2.4 Inuence of Solvent on Porous Structure of Cryogels ................35
