. "2015-01-01+01:00"^^ . . " living polymerization" . " LDPE" . . . "http://www.isvav.cz/projectDetail.do?rowId=GC15-15887J"^^ . "BRANCHING DESIGN IN POLYOLEFINS BY CATALYST VARIATION. THEORY MEETS EXPERIMENT."@en . "polyolefins; branching; topology; LDPE; catalyst; living polymerization; solution behavior; modelling"@en . "Jedn\u00EDm z nejd\u016Fle\u017Eit\u011Bj\u0161\u00EDch parametr\u016F ovliv\u0148uj\u00EDc\u00EDch fyzik\u00E1ln\u00ED vlastnosti polyolefin\u016F je jejich v\u011Btven\u00ED a topologie. Tento spole\u010Dn\u00FD projekt p\u0159isp\u011Bje k porozum\u011Bn\u00ED mechanismu synt\u00E9zy polyolefin\u016F s \u0159\u00EDzenou topologi\u00ED v\u011Btven\u00ED variac\u00ED typu katalyz\u00E1toru a reak\u010Dn\u00EDmi podm\u00EDnkami. Budou p\u0159ipraveny nov\u00E9 nikelnat\u00E9 a paladnat\u00E9 komplexy nesouc\u00ED alfa-diiminov\u00E9, beta-diiminov\u00E9 a imino-aminov\u00E9 ligandy. Tyto komplexy vykazuj\u00EDc\u00ED chain-walking mechanismus a z\u00E1rove\u0148 \u017Eiv\u00E9 polymera\u010Dn\u00ED chov\u00E1n\u00ED budou vyu\u017Eity k p\u0159\u00EDprav\u011B precizn\u00EDch modelov\u00FDch olefinick\u00FDch homopolymer\u016F a blokov\u00FDch kopolymer\u016F s \u0159\u00EDzen\u00FDm v\u011Btven\u00EDm, topologi\u00ED a \u0159\u00EDzenou d\u00E9lkou blok\u016F. Charakterizace roztok\u016F polymer\u016F pomoc\u00ED rozptylu sv\u011Btla a SANS poskytne detailn\u00ED informace o molekulov\u00E9 struktu\u0159e a segment\u00E1rn\u00ED hustot\u011B p\u0159ipraven\u00FDch polymer\u016F. Podstatn\u00FDm pil\u00ED\u0159em projektu bude teoretick\u00E1 simulace mechanismu v\u011Btven\u00ED a jeho vlivu na vlastnosti polymeru a porovn\u00E1n\u00ED s experimentem." . "2017-12-31+01:00"^^ . "KATALYZ\u00C1TORY PRO \u0158\u00CDZEN\u00C9 V\u011ATVEN\u00CD POLYOLEFIN\u016E. PROPOJEN\u00CD TEORIE A EXPERIMENTU." . . . "0"^^ . . . "1"^^ . "0"^^ . "polyolefins" . . "0"^^ . "GC15-15887J" . "The branching topology is an essential parameter for tailoring physical properties of polyolefins. This joint project will give an insight into the synthetic mechanism of polyolefins varying catalyst and reaction conditions, leading to a defined branching topology. Novel nickel and palladium complexes with alpha-diimine, beta-diimine and imine-amine ligands displaying both chain-walking mechanism and living polymerization behavior will be synthesized and used for preparation of precise olefin homo- and copolymers with well-defined branching, topology and blocks lengths. In depth characterization of the molecular characteristics in solution using light scattering and SANS will enable an insight into segmental density and molecular structure. Essential is the theoretical understanding of these phenomena using a multi-scaling approach for simulation of the branching generation and the polymer properties and to compare them to the experiment."@en . . "0"^^ . " branching" . " catalyst" . . . "2015-03-20+01:00"^^ . . . . " topology" . " solution behavior" . . .