Some polymers dissolve in a solvent readily, others requiring prolong period of heating and network polymer
do not dissolve.
Herein, we wish to explore the catalytic activity of the sulfamic acid functionalized network polymer
based on calixresorcinarene as a highly efficient heterogeneous acidic nanocatalyst towards the one-pot synthesis of 1,8-dioxo-octahydroxanthene derivatives under thermal solvent-free conditions.
The noted signs of inhibition due to the network polymer
solidifying  are also retained when the OECC is modified, reaching a ~ 70 to 75%.
However, at higher degrees of neutralization from 70 to 85%, the swelling was reduced due to the Na+ ions that act as a screen inside the network polymer
, hindering the repulsion of-CO[O.sup.-] groups and decreasing the swelling capacity.
Chen, "Synthesis and characterization of a new network polymer
electrolyte containing polyether in the main chains and side chains," European Polymer Journal, vol.
However, at low frequencies, the [ABA.sub.7] and [AB.sub.3] copolymers with the diamide segments situated at the chain ends displayed a low terminal slope typical of a network polymer
. The number of diamide segments in the copolymer and the concentration of diamide segments did not seem to have any effect on these results.
On reaction, these two oligomers react to form a 3-dimensional network polymer
with acetic acid produced as a volatile by-product (6).
Johnson, Koberstein, and Turro, using atom transfer radical polymerization (ATRP) and click chemistry, synthesized degradable network polymers
for specific degradation reactions.
Last year, Schulman bought compounder and distributor Network Polymers
in Akron and British compounder and distributor Perrite Group.
Rovi Cosmetics' product lines will complement Air Products' current offering, which includes temperature switch polymers under the Intelimer brand, "functional-feel' polymers under Deposilk brand, and Hybridur urethane-acrylic interpenetrating network polymers
The contributions describe approaches for conjugating proteins and peptides to polymers, generating complex macromolecular architectures via orthogonal and selective cycloadditions, fabricating alkyne and azide functionalized surfaces, and designing multifunctional network polymers
. A survey of supramolecular materials prepared via click chemistry is nicely complemented by a chapter on dendrimer synthesis research efforts.
Henry Bolker, FCIC: Solubilization of network polymers
, including wood and lignin.