Results 21 to 30 of about 184,196 (308)

Anionic Polymerization Using Flow Microreactors

open access: yesMolecules, 2019
Flow microreactors are expected to make a revolutionary change in chemical synthesis involving various fields of polymer synthesis. In fact, extensive flow microreactor studies have opened up new possibilities in polymer chemistry including cationic ...
Yusuke Takahashi, Aiichiro Nagaki
doaj   +1 more source

High-Efficiency Mono-Cyclopentadienyl Titanium and Rare-Earth Metal Catalysts for the Production of Syndiotactic Polystyrene

open access: yesMolecules, 2023
Syndiotactic polystyrene (SPS) refers to a type of thermoplastic material with phenyl substituents that are alternately chirally attached on both sides of an aliphatic macromolecular main chain.
Bo Wen   +5 more
doaj   +1 more source

Fire properties of styrenic polymer–clay nanocomposites based on an oligomerically-modified clay [PDF]

open access: yes, 2006
An oligomerically-modified clay has been used to fabricate nanocomposites with styrenic polymers, such as polystyrene, high-impacted polystyrene, poly(styrene-co-acrylonitrile) and acrylonitrile–butadiene–styrene by melt blending. The clay dispersion was
Jiang, David D.   +2 more
core   +2 more sources

Synthesis and properties of a new AB-cross-linked copolymer membrane system [PDF]

open access: yes, 1993
The alcohol permeability and permselectivity properties as well as the morphology of membranes made of a newly developed AB-cross-linked copolymer system composed of elastomeric and glassy components were investigated.
Kerres, J.A., Strathmann, H.
core   +2 more sources

Incoherent Transport through Molecules on Silicon in the vicinity of a Dangling Bond [PDF]

open access: yes, 2008
We theoretically study the effect of a localized unpaired dangling bond (DB) on occupied molecular orbital conduction through a styrene molecule bonded to a n++ H:Si(001)-(2x1) surface.
Diego Kienle   +8 more
core   +3 more sources

Combined experimental and computational investigations of rhodium-catalysed C-H functionalisation of pyrazoles with alkenes [PDF]

open access: yes, 2014
Detailed experimental and computational studies have been carried out on the oxidative coupling of the alkenes C(2)H(3)Y (Y=CO(2)Me (a), Ph (b), C(O)Me (c)) with 3-aryl-5-R-pyrazoles (R=Me (1 a), Ph (1 b), CF(3) (1 c)) using a [Rh(MeCN)(3)Cp*][PF(6)](2 ...
Algarra, Andrés G.   +6 more
core   +1 more source

Synthesis of 2-Alkenyl-2H-indazoles from 2-(2-Carbonylmethyl)-2H-indazoles

open access: yesMolecules, 2016
A procedure has been developed for synthesis of 2-alkenyl-2H-indazoles starting from 2-(2-carbonylmethyl)-2H-indazoles, which are prepared by gallium/aluminium- and aluminium-mediated, direct, regioselective alkylation of indazoles with α-bromocarbonyl ...
Mei-Huey Lin   +7 more
doaj   +1 more source

Blends of styrene-butadiene-styrene triblock copolymer with random styrene-maleic anhydride copolymers [PDF]

open access: yesMacromolecular Chemistry and Physics, 2002
Blends of styrene-butadiene-styrene triblock copolymer (SBS) with random styrene-maleic anhydride copolymers (PS-co-MA), having different MA content, were prepared in a Brabender Plastigraph mixer. The presence of polystyrene (PS) blocks in the SBS copolymer and the high styrene content (93 and 86 wt.-%, respectively) in the two kinds of used PS-co-MA ...
PICCHIONI F.   +4 more
openaire   +5 more sources

Linear Chains of Styrene and Methyl-Styrene Molecules and their Heterojunctions on Silicon: Theory and Experiment

open access: yes, 2005
We report on the synthesis, STM imaging and theoretical studies of the structure, electronic structure and transport properties of linear chains of styrene and methyl-styrene molecules and their heterojunctions on hydrogen-terminated dimerized silicon ...
D. A. Papaconstantopoulos   +6 more
core   +1 more source

P450BM3-Catalyzed Oxidations Employing Dual Functional Small Molecules [PDF]

open access: yes, 2019
A set of dual functional small molecules (DFSMs) containing different amino acids has been synthesized and employed together with three different variants of the cytochrome P450 monooxygenase P450BM3 from Bacillus megaterium in H2O2-dependent oxidation
Girhard, Marco   +5 more
core   +1 more source

Home - About - Disclaimer - Privacy