ABSTRACT
Synthesis of Functionalized Polysiloxane Xerogels 399
Synthesis of Xerogels with Amino Groups
in a Surface Layer . . . . . . . . . . . . . . . . . . . . . . . 399
Synthesis of Xerogels with Urea and Thiourea
Groups in a Surface Layer . . . . . . . . . . . . . . . . . 407
Synthesis of Xerogels with Thiol Groups in a
Surface Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . 409
Synthesis of Xerogels with Carboxyl Groups
in a Surface Layer . . . . . . . . . . . . . . . . . . . . . . . 414
Structure of Functionalized
Polysiloxane Xerogels . . . . . . . . . . . . . . . . . . . . . . 416
Identification of Xerogels by the Vibrational
Spectroscopy . . . . . . . . . . . . . . . . . . . . . . . . . . . 416
Characterization of Functionalized Polysiloxane
Xerogels by the NMR Method . . . . . . . . . . . . . 419
Application of Metal Microprobe Method for
Characterizing the Structure of a
Xerogel Surface . . . . . . . . . . . . . . . . . . . . . . . . . 421
Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 423
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . 423
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 423
On the basis of the authors’ works a consideration is given to salient features of synthesis of a new class of
sorbents and supports (namely polysiloxane xerogels with nitrogen-, oxygen-, and sulfur-containing
functional groups) which are produced by the sol-gel method. The structure of the synthesized xerogels
is determined and ascertained by a number of physical techniques (SEM, TEM, IR and Raman spectroscopy,
solid-state NMR spectroscopy, ESR spectroscopy, thermal analysis). A consideration is also given to struc-
ture-adsorption characteristics of the xerogels and to dependence of the characteristics on various factors.
