Výsledky vyhledávání - "René Nagelsdiek"

Publikováno v: Reinforced Plastics. 63:97-101

Plastics additives are used to optimize almost all aspects of a system. They can positively influence the processing properties of a system as well as its mechanical and aesthetical properties and, ultimately, the quality of the final product. In thi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::64696350c43efaea17f337d87f8bb404
https://doi.org/10.1016/j.repl.2018.09.001

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Synthesis of block copolymers with thermodynamically compatible chain segments: di- and triblock copolymers of polystyrene and poly(2,6-dimethyl-1,4-phenylene oxide)

Autor: Hartwig Höcker, Helmut Keul, René Nagelsdiek

Publikováno v: Polymer International. 55:108-117

Mono- and bifunctional poly(phenylene oxide) (PPO) macroinitiators for atom transfer radical polymerization (ATRP) were prepared by esterification of mono- and bishydroxy telechelic PPO with 2-bromoisobutyryl bromide. The macroinitiators were used fo

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https://doi.org/10.1002/pi.1926

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ATRP of Allyl Methacrylate with Alkyl Methacrylates - Crosslinking of Poly(methacrylate)s with Allyl Ester Side Groups

Autor: René Nagelsdiek, Helmut Keul, Hartwig Höcker, Martina Mennicken

Publikováno v: Macromolecular Chemistry and Physics. 205:2429-2437

Summary: Random copolymers of methyl methacrylate (MMA), butyl methacrylate (BMA) and allyl methacrylate (AMA) were prepared via atom transfer radical polymerization (ATRP). AMA is a bifunctional monomer with two double bonds of different reactivity:

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https://doi.org/10.1002/macp.200400357

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Synthesis of Polymers Containing Cross-Linkable Groups by Atom Transfer Radical Polymerization: Poly(allyl methacrylate) and Copolymers of Allyl Methacrylate and Styrene

Autor: Hartwig Höcker, René Nagelsdiek, Helmut Keul, Britta Maier, Martina Mennicken

Publikováno v: Macromolecules. 37:8923-8932

Poly(allyl methacrylate) (PAMA) and random copolymers of styrene (St) with allyl methacrylate (AMA) were prepared via atom transfer radical polymerization. For the homopolymerization of AMA, the maximum conversion depends on the reaction conditions a

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https://doi.org/10.1021/ma0488663

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A Novel Macroinitiator for the Synthesis of Triblock Copolymers via Atom Transfer Radical Polymerization: Polystyrene-block-poly(bisphenol A carbonate)-block-polystyrene and Poly(methyl methacrylate)-block-poly(bisphenol A carbonate)-block-poly(methyl methacrylate)

Autor: René Nagelsdiek, Martina Mennicken, Helmut Keul, Hartwig Höcker

Publikováno v: Macromolecular Chemistry and Physics. 205:143-153

Bis(hydroxy)telechic bisphenol A polycarbonate (PC) was prepared via melt polycondensation of bisphenol A (BPA) and diphenyl carbonate (DPC) using lanthanum(m) acetylacetonate as a catalyst for transesterification. Subsequently, the polycarbonate was

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https://doi.org/10.1002/macp.200300059

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Versatile Enantioselective Synthesis of Four Diastereomers of Serricornin, a Sex Pheromone of the Cigarette Beetle, Using the SAMP/RAMP-Hydrazone Method

Autor: Andreas Job, René Nagelsdiek, Dieter Enders

Publikováno v: Collection of Czechoslovak Chemical Communications. 65:524-538

Serricornin is a female-produced sex pheromone of the cigarette beetle (Lasioderma serricorne), which is a pest of dried foodstuffs and tobacco. We report a versatile and short synthesis of all possible 6,7-syn-isomers of serricornin, including the n

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https://doi.org/10.1135/cccc20000524

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Polymers with Pendant Allyl Ester Groups Prepared via Atom Transfer Radical Polymerization: Synthesis, Characterization, and Microstructuring of Thin Films

Autor: René Nagelsdiek, Petra Mela, Martina Mennicken, Helmut Keul, Martin Möller

Publikováno v: ACS Symposium Series ISBN: 9780841239913

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https://doi.org/10.1021/bk-2006-0944.ch012

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A new approach to multiblock copolymers using atom transfer radical coupling

Autor: Hartwig Höcker, René Nagelsdiek, Helmut Keul

Publikováno v: e-Polymers. 5

Atom transfer radical coupling (ATRC) is a method for chain extension of styrene homopolymers prepared by atom transfer radical polymerization (ATRP). This concept is used to produce multiblock copolymers from block copolymers prepared via ATRP of st

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https://doi.org/10.1515/epoly.2005.5.1.510

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Bistable shape memory thin film actuators

Autor: Martina Mennicken, Eckhard Quandt, Tobias Sterzl, Hartwig Hoecker, Helmut Keul, Bernhard Winzek, René Nagelsdiek

Publikováno v: Smart Structures and Materials 2003: Active Materials: Behavior and Mechanics.

Shape memory alloys (SMA) are able to provide high work output when they undergo the martensitic transformation. Therefore, they present a favorable actuation mechanism for microsystems, e.g. for microvalves, switches or microgrippers. Sputter deposi

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https://doi.org/10.1117/12.484696

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