Упрощенная HTML-версия
Гидрофобный
Гидрофильным
фрагмент
Гидрофобный
фрагмент
Гидрофильный
фрагмент
фрагмент
Figure 22. Detail of the polymer
Sample dispersion electrically conductive polymer [57]. Such hydrogels are
sensitive to electrical fields and can be used to create devices that provide
controlled drug delivery, and artificial muscles. Another embodiment relates to
the formation of micelle-like aggregates in solutions by combining polymers
containing functional groups capable of physical interactions. Example -
aggregation of polymer macromolecules in solution of PVP and PS c terminal
sulfonic acid [58] due to the formation of hydrogen bonds between the carbonyl
groups of the EP and sulfonic acid.
A more common method of obtaining a bi-phase hydrogels - conetworks
synthesis and the UPU. The difference between these two structures - in the
hydrogel type conet - works hydrophilic and hydrophobic moieties are
covalently linked, as in the UPU chemical bonds between the hydrophilic and
hydrophobic nets no.
These structures explain the fundamental difference of physical-chemical
properties of hydrogels conetworks and CHD [26]. The question arises of phase
separation. If conetworks components macrophase separation prevent covalent
bonds between the hydrophilic and hydrophobic components, the AMS obstacle
- physical engagement of two grids. In conetworks, although not delamination
116