Effect of End-Anchored Chains on the Adhesion at a Thermoset-Thermoplastic Interface

Design of nanocomposite polymer coatings for MEMS applications

“…It was proposed by Norton et al 166 that S vary as 1 -N. This kind of behavior was confirmed for grafted PS layers on epoxy-terminated substrates. 166 We replotted these data in Figure 63a along with the linear approximation used in the comparison with our data.…”

“…The grafted brush layer can be produced from either solution 54 ' 55 or melt. 56 ' 57 It is commonly observed that only a limited layer thickness can be obtained by adsorption of polymer from solution, since after some chains have become attached, incoming chains have to diffuse against a concentration gradient to reach the solid surface. In addition, there is an entropy loss arising from the change in conformation of both the incoming and the adsorbed polymer to accommodate another chain.…”

Importance of Molecular Friction in a Soft Polymer−Nanotube Nanocomposite

“…We also note that a similar dependence on interfacial chain density was found in the interaction of diblock copolymer brushes at the interfaces in immiscible polymer blends. [9][10][11] When the Σ became sufficiently large, the interfacial strengths were found to level off at a constant value. In Brown's experiments, 13 sliding friction was increased by thin brush layers (i.e.…”

Design and fabrication of colloidal polymer nanocomposites

“…[131] Yet another example is that a high density of grafted polymer chains on SWNT surfaces leads to more effective interfacial stress transfer and results in a pronounced mechanical reinforcement. [132] Inspired by previous studies of how polymer chain length (N) and density (Σ) at interfaces influence fracture [133][134][135], adhesion [136], and friction [137,138], Wang et al [139] systematically investigated the interfacial control of τ in a soft polymernanotube nanocomposite through the chain length and density of the polymers physisorbed on carbon nanotube surfaces and then located at the nanocomposite interfaces. Figure 14b shows a scheme of physisorbed polymers on the carbon nanotube surface.…”