title: Generation of Well-Relaxed All-Atom Models of Large Molecular Weight Polymer Melts: A Hybrid Particle-Continuum Approach Based on Particle-Field Molecular Dynamics Simulations.
abstract: A procedure based on Molecular Dynamics (MD) simulations employing soft potentials derived from self-consistent field (SCF) theory (named MD-SCF) able to generate well-relaxed all-atom structures of polymer melts is proposed. All-atom structures having structural correlations indistinguishable from ones obtained by long MD relaxations have been obtained for poly(methyl methacrylate) (PMMA) and poly(ethylene oxide) (PEO) melts. The proposed procedure leads to computational costs mainly related on system size rather than to the chain length. Several advantages of the proposed procedure over current coarse-graining/reverse mapping strategies are apparent. No parametrization is needed to generate relaxed structures of different polymers at different scales or resolutions. There is no need for special algorithms or back-mapping schemes to change the resolution of the models. This characteristic makes the procedure general and its extension to other polymer architectures straightforward. A similar procedure can be easily extended to the generation of all-atom structures of block copolymer melts and polymer nanocomposites.
authors.affiliation: Dipartimento di Chimica e Biologia, Università degli Studi di Salerno , via Ponte don Melillo, Fisciano, Salerno I-84085, Italy.|IMAST Scarl-Technological District in Polymer and Composite Engineering, Piazza Bovio 22, Napoli, Napoli I-80133, Italy.
authors.forename: Antonio
authors.initials: A
authors.lastname: De Nicola
authors.affiliation: Department of Physics, Tohoku University , Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan.
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Kawakatsu
authors.affiliation: Dipartimento di Chimica e Biologia, Università degli Studi di Salerno , via Ponte don Melillo, Fisciano, Salerno I-84085, Italy.|IMAST Scarl-Technological District in Polymer and Composite Engineering, Piazza Bovio 22, Napoli, Napoli I-80133, Italy.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Milano