Converting carbon dioxide into plastic? Scientists explore the greening of polymeric materials at the source

China Coatings Online News:
Polymer material refers to the polymer formed by a monomer through polymeration reaction or ameration reaction, such as various plastics, rubber, etc., it is also the raw material for the manufacture of textile synthetic fibers.
With the rapid development of high-tech, the application of polymer materials in all walks of life is increasing, and the non-degradability of polymer materials and low recycling rate of environmental harm can not be underestimated, has become a world-wide problem in solid waste treatment."Green" refers to the selection of environmentally friendly monomer materials and synthesis processes, starting with the source of polymer material synthesis, and taking into account the environmental compatibness of synthetic polymer materials (i.e., natural degradation or degradation in a relatively short period of time) and the life cycle of the product (recycling after product use).the current greening of polymeric materials is mainly reflected in the study of biodegradability, the search for greener, more sustainable synthetic raw materials has always been the goal of scientists. In particular, the use of "greenhouse gas" CO2 synthetic polymer materials research, in recent years frequently appeared in the world's top academic journals.
, a team at the University of Toronto in Canada released a study that says it has found the most effective condition for converting CO2 into ethylene. Ethylene can then be used to make polyethylene, the most commonly used plastic with an annual global production of about 80 million t.
that the core work of this study is the process of CO2 reduction reaction. With the aid of catalysts, CO2 is converted into other chemicals by current and chemical reactions. In this reaction, many metals can be used as catalysts, such as gold, silver and zinc, to catalyctic the production of CO, while tin and palladium can catalyctic the production of foric acid, and copper can catalycize the production of ethylene.unique device developed by Tom Regier, a senior scientist at Canalian Light Source, researchers were able to study the shape, shape and chemical environment of copper catalysts throughout the CO2 reduction reaction in real time. This in turn confirms the precise conditions for maximizing ethylene production and adjusts the catalyst to maximize ethylene production while minimizing methane production.study has been published in Nature Catalysis, the latest in the nature series.
, a team at Stanford University in the United States, in a paper published in the journal Nature, presented a study that could convert plant materials such as carbon dioxide and crop residues into plastics.
Researchers mixed carbonates, CO2s, and acetic acid derived from acetaldehyde to heat them to 200 degrees C, showing a molten salt state, and after 5h, 89% of the total molten salt mixture is converted into 2,5-furanddyl acid, which in turn produces polyfulfate (PEF) that can replace polythylphenidate to some extent. Unlike benzoic acid, 2,5-furan methamphetamine can be a derivative of biological materials.addition, bioplastics based on natural substances such as starch are renewable and therefore very environmentally friendly.
Meiji University has succeeded in increasing the production of bioplastic raw materials, serum and lactic acid, by altering the hydrogen synthase of cyanobacteria, which are expected to contribute to solving future environmental and energy problems. The findings appear in the journal Algal Research.
。