Living carbocationic polymerization of a vinyl ether monomer derived from soybean oil, 2-(vinyloxy)ethyl soyate
文献信息
Andrey Chernykh, Samim Alam, Anurad Jayasooriya, James Bahr
A novel vinyl ether monomer was produced from soybean oil by base-catalyzed transesterification of 2-(vinyloxy)ethanol with soybean oil. The cationic polymerization of this monomer, which is being referred to as 2-(vinyloxy)ethyl soyate (2-VOES), was investigated using a polymerization system involving a difunctional cationogen, ethylaluminum sesquichloride as the coinitiator, toluene as the solvent, and a polymerization temperature of 0 °C. With this polymerization system, the polymerization was first order with respect to monomer and molecular weight increased linearly with monomer conversion. Further, the molecular weight distribution of the polymers obtained were below 1.2. The addition of fresh monomer to a polymerization that had reach approximately 90 percent monomer conversion resulted in a further increase in molecular weight without an increase in molecular weight distribution. These results indicate that the polymerization was a living polymerization, which will enable well-defined polymer architectures, such as triblock copolymers, to be produced in the future.
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Green Chemistry

Green Chemistry provides a unique forum for the publication of innovative research on the development of alternative green and sustainable technologies. The scope of Green Chemistry is based on, but not limited to, the definition proposed by Anastas and Warner (Green Chemistry: Theory and Practice, P T Anastas and J C Warner, Oxford University Press, Oxford, 1998). Green chemistry is the utilisation of a set of principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical products. Green Chemistry is at the frontiers of this continuously-evolving interdisciplinary science and publishes research that attempts to reduce the environmental impact of the chemical enterprise by developing a technology base that is inherently non-toxic to living things and the environment. Submissions on all aspects of research relating to the endeavour are welcome. The journal publishes original and significant cutting-edge research that is likely to be of wide general appeal. To be published, work must present a significant advance in green chemistry. Papers must contain a comparison with existing methods and demonstrate advantages over those methods before publication can be considered. For more information please see this Editorial. Coverage includes the following, but is not limited to: Design (e.g. biomimicry, design for degradation/recycling/reduced toxicity…) Reagents & Feedstocks (e.g. renewables, CO2, solvents, auxiliary agents, waste utilization…) Synthesis (e.g. organic, inorganic, synthetic biology…) Catalysis (e.g. homogeneous, heterogeneous, enzyme, whole cell…) Process (e.g. process design, intensification, separations, recycling, efficiency…) Energy (e.g. renewable energy, fuels, photovoltaics, fuel cells, energy storage, energy carriers…) Applications (e.g. electronics, dyes, consumer products, coatings, pharmaceuticals, preservatives, building materials, chemicals for industry/agriculture/mining…) Impact (e.g. safety, metrics, LCA, sustainability, (eco)toxicology…) Green chemistry is, by definition, a continuously-evolving frontier. Therefore, the inclusion of a particular material or technology does not, of itself, guarantee that a paper is suitable for the journal. To be suitable, the novel advance should have the potential for reduced environmental impact relative to the state of the art. Green Chemistry does not normally deal with research associated with 'end-of-pipe' or remediation issues.












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