WebJan 1, 2012 · In the concentrated bulk phase, diffusion of a short chain can be described by a free-draining mode of the bead-spring Rouse chain, while diffusion of a long chain can be described by the tube model for a Rouse chain reptating along the primitive path. WebJul 10, 2024 · This is consistent with our naive picture that short-chain branches just affect the friction and other rheological properties are not sensitive to the short-chain …
Molecular Structure, Phase Composition, Melting Behavior, …
WebFeb 26, 2016 · As clearly shown in this study, short-chain branches are able to play a unique, prominent role in polymer dynamics on account of their intrinsic fast kinetic … WebOct 2, 2024 · Long-chain branches are defined as those long enough to entangle, i.e., the branch molecular weight is more than two times the entanglement molecular weight (M … highso.cn
Evolution of chain entanglements under large amplitude …
Weblong-chain branches and their distribution are explored for production of a wide range of polyolefins ... chains, i.e., the topological entanglement concept.24 ,25 26 Entanglement density in semicrystalline polymers can be affected by crystallization conditions from the melt,23,27 polymer concentration WebApr 28, 2024 · The knowledge of chain entanglement is key to our understanding of the relation between the viscoelastic properties of polymeric material and their microscopic structure and dynamics. This work conducted a detailed study on the role of short chains in the entangled polymer network. WebIn general all polymers consist of long molecular chains. Figure 6.25 shows four different basic configurations of molecular chains (Ehrenstein, 1999). Linear, branched, crosslinked or tangle configurations of the molecular chains are possible. ... Polymer viscosity depends upon the molecular chain entanglement in the polymer solution which ... highsnobiety uk