Results 31 to 40 of about 91,509 (283)
Polímeros, 2000 Foi utilizado o sistema catalítico tipo Ziegler-Natta modificado, constituído por TiCl4/I2/Al(i-Bu)3 para a síntese de polibutadieno com alto teor de unidades 1,4-cis.
Neusa M. T. Pires +2 more
doaj +1 more source
CompoundsAn analysis was conducted to investigate how reaction system turbulence affects the butadiene-isoprene copolymerization in the presence of the TiCl4 + Al(i-Bu)3 catalytic system.
Konstantin A. Tereshchenko +3 more
doaj +1 more source
Fire properties of styrenic polymer–clay nanocomposites based on an oligomerically-modified clay [PDF]
, 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
ComputationDivinylisoprene rubber, a copolymer of butadiene and isoprene, is used as raw material for rubber technical products, combining isoprene rubber’s elasticity and butadiene rubber’s wear resistance.
Konstantin A. Tereshchenko +4 more
doaj +1 more source
Synthesis of 6-Nitroderivatives of Oxazolo[3,2-a]-pyridines and Their Reactions with Nucleophiles
Molecules, 2003 5-Nitro-2-pyridone can be selectively N-phenacylated, and the resulting phenacylpyridones I undergo cyclization to 6-nitrooxazolo[3,2-a]pyridinium salts II.
Eugene V. Babaev, Alexander A. Bush
doaj +1 more source
Characterization of carbon monoxide, methane and nonmethane hydrocarbons in emerging cities of Saudi Arabia and Pakistan and in Singapore [PDF]
, 2016 We investigate the composition of 63 C2-C10 nonmethane hydrocarbons (NMHCs), methane (CH4) and carbon monoxide (CO), in Jeddah, Mecca, and Madina (Saudi Arabia), in Lahore, (Pakistan), and in Singapore. We established a database with which to compare and
Aburizaiza, Omar S +11 more
core +1 more source
What Do Large Language Models Know About Materials?
Advanced Engineering Materials, EarlyView.If large language models (LLMs) are to be used inside the material discovery and engineering process, they must be benchmarked for the accurateness of intrinsic material knowledge. The current work introduces 1) a reasoning process through the processing–structure–property–performance chain and 2) a tool for benchmarking knowledge of LLMs concerning ...
Adrian Ehrenhofer +2 more
wiley +1 more source
Unexpected high performance of ZIF-8 membranes for 1,3-butadiene purification
Journal of Membrane Science Letters, 2023 The purification of 1,3-butadiene from C4 hydrocarbon mixtures currently relies on energy-intensive extractive distillation. In this study, we employed ZIF membranes for this challenging separation for the first time, unveiling their superior capability ...
Jun-Wei Wang, Zhiqin Qiang, Xiaoli Ma
doaj +1 more source
Blends of Nitrile Butadiene Rubber/poly (Vinyl Chloride): the Use of Maleated Anhydride Castor Oil Based Plasticizer [PDF]
, 2016 Recently, much attention has been focused on research to replace petroleum-based plasticizers, with biodegradable materials, such as biopolymer which offers competitive mechanical properties.
Dewi, I. R. (Indiah) +2 more
core
Sampling Free Energy Surfaces as Slices by Combining Umbrella Sampling and Metadynamics [PDF]
, 2016 Metadynamics (MTD) is a very powerful technique to sample high-dimensional free energy landscapes, and due to its self-guiding property, the method has been successful in studying complex reactions and conformational changes.
Awasthi, Shalini +2 more
core +2 more sources