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copolymers are a special type of branched copolymer in which the
side chains are structurally distinct from the main chain.
grafting of polymers onto carbon nanotubes (CNT) and nanofibers,
such as vapor grown carbon fiber (VGCF) surfaces was achieved by
(1) the ``grafting onto'' method, (2) ``polymer reaction''
method, (3) ``grafting from'' method, and (4) ``stepwise
growth'' method by dendrimer synthesis methodology.
copolymer with a poly(vinyl chloride) backbone were prepared by
two approaches, one was preparation of a macroinitiator by
copolymerization of vinyl chloride with a monomer containing an
ATRP initiating group, vinyl chloroacetate.
grafted polymers, which are polymers tethered to the substrate
surface, have been extensively studied because of its importance
in surface rheology such as adhesions, frictions, and
there has been considerable interest in the study of
configurational properties of polymer chains terminally attached
or end-grafted to an interface.
polymer brush gradients are assemblies of surfaceanchored
macromolecules, in which two material properties of the grafted
chains (e.g., grafting density, molecular weight) vary
independently in orthogonal directions.
- Layers of
grafted polymers have a wide range of applications, ranging from
the colloidal stabilization of industry formulations, water
treatment, and mineral recovery, to the control of surface
wetting and adhesion or the protection of stealth liposomes from
the human immune system in drug delivery.
end-grafted polymer layers play an important role in colloidal
stabilization, chromatography, adhesion, lubrication,
microelectronics, and biocompatibility of artificial organs in
can be attained either by physisorption (diblock copolymers) or
by chemisorption (end-functionalized polymers).
chitin, the most abundant natural amino polysaccharide, and its
most important derivative, chitosan, are recently considered as
the subjects for extensive worldwide academic and industrial
- In spite
of potential applications of chitin and chitosan, it is
necessary to establish efficient appropriate modifications to
explore fully the high potential of these biomacromolecules.
of polyvinylic and polyacrylic synthetic materials on the
polysaccharides are mainly achieved by radical polymerization.
copolymers are prepared by first generating free radicals on the
biopolymer backbone and then allowing these radicals to serve as
macroinitiators for the vinyl (or acrylic) monomer.
with telechelic polymers provides an alternative method,
commonly referred to as grafting onto , for synthesizing hybrid
copolymerization is considered to be one of the most promising
approaches to a wide variety of molecular designs leading to
novel type of
tailored hybrid materials.
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