(4-hydroxystyrene) in 1,4-dioxane/toluene. Secondary amines or molecules containing two hydrogen-bonding functional groups could cross-link the polymer chains through the hydrogen bonds, which altered the solvation state and induced the UCST-type thermo-responsiveness or insolubility of the polymer. ...
Hydrogen-bonding-assisted self-doping in tetrathiafulvalene (TTF) conductor. J. Am. Chem. Soc. 131, 9995–10002 (2009). Article CAS PubMed Google Scholar Menon, R., Yoon, C. O., Moses, D., Heeger, A. J. & Cao, Y. Transport in polyaniline near the critical regime of the metal-...
Quantitative study of C—H bonding in polymerlike amorphous carbon films usingin situinfrared ellipsometry Drevillon, B., Godet, C., Bouree, J.E.: Quantitative study of C-H bonding in polymerlike amorphous carbon films using in situ infrared ellipsometry... T.,Heitz,B.,... - 《Physical ...
a covalent network1or by the intermolecular association of linear or branched polymers, commonly through hydrogen bonding, to give a physical network.2,3In addition, some network structures, such as thermoplastic elastomers, are formed from a mixture of covalent bonds and intermolecular associations.4...
but are pliable and can be molded above a certain temperature. While thermoset plastics form irreversible chemical bonds when cured, the bonding in thermoplastics weakens with temperature. Unlike thermosets, which decompose rather than melt, thermoplastics melt into a liquid upon heating. Examples of ...
In step-growth polymerization, one or more types of monomers can be involved, and each monomer should have at least two sites for bonding. For polymerization with more than one type of monomers, for example, involving A and B monomers, A–B step-growth polymerization or A–A/B–B step-...
and MNR guaranteed a degradation temperature of 439 °C and char yield as high as 47.2%. Microscopy analysis and X-ray diffraction revealed that the silica nanoparticles were finely distributed on the surface of CNTs by chemical bonding (Fig.5). The use of functionalized carbon-based nanostruc...
At shear rates beyond the critical rate for mechanical degradation, these elastic forces overcome macromolecular bonding forces, breaking the polymer backbone and causing a significant viscosity loss104,196. Furthermore, various factors controlling the degree of mechanical degradation in porous media are ...
Intrinsically elastic and self-healing luminescent polyisoprene copolymers formed via covalent bonding and hydrogen bonding design Covalent and hydrogen-bonding architectures were designed in polyisoprene (PI)-based rubber containing the conjugated poly[2,7-(9,9-dioctylfluorene)] (PF) to enable elastic...
Bonding, flowable, and hybrid restorative composites incorporating the nanoparticles were tested after being cured by light initiation. Interestingly, although the nanoparticles were incorporated at a low concentration, a strong antibacterial activity was evident upon contact with bacteria without leach-out ...