Micro-flow column discharge method for grafting corn straw and methyl methacrylate

Abstract

The invention relates to micro-flow-column discharging corn straw which grafts methyl methacrylate, which is applied in the field of resource regeneration and chemistry and chemical engineering applied technology, which relates to a polymerization reaction technique of a micro-flow-column discharging corn straw activation apparatus and a corn straw graft methyl methacrylate. The invention is characterized in that an electric-field strengthening micro-flow-column discharging device whose time domain is transient is added in the process of grafting methyl methacrylate by the corn straw, core straw powder can be effectively activated by the device in a closed condition,and the core straw which is activated has a further graft polymerization reaction with methyl methacrylate, and central raw material of graft polymerization reaction and product yields appear in the form of powder. The invention has the advantages that a strict and complex preconditioning technique is not needed, biodegradable polymer can be prepared in quick-speed, high performance and no pollution without harsh reaction conditions such as high temperature, high pressure, radiation and the like. The invention providesa new method for the regeneration of waste resources.

Description

technical field The invention belongs to the technical fields of gas discharge, resource regeneration and chemical engineering application, and relates to a method for preparing a polymer by using corn stalks and methyl methacrylate (hereinafter referred to as MMA) as raw materials through controllable microflow column discharge. Background technique Polymer materials have very important applications in industry, agriculture, national defense, and modern life. The raw materials for their synthesis mainly come from non-renewable resources such as coal, oil, and natural gas, and they are major consumers of non-renewable resources. Studies have shown that the proven reserves of hydrocarbon resources are very limited at present, and can only be used for 50-100 years based on the current consumption level. This is a huge resource crisis facing mankind. At the same time, polymer materials are also the source of global white pollution. More than half of the white waste can take hun...

AI Technical Summary

Problems solved by technology

This method needs to be carried out under the conditions of high temperature, high pressure and the presence of oxidants, and some cellulose will be oxidized to CO during the wet oxidation process. 2 and H 2 O and lost

At present, there are some problems in the graft polymerization of corn stalks and MMA as raw materials. For example, the pretreatment process is complicated, which has a great influence on the subsequent treatment; the solution or melt polymerization with peroxide as the initiator will cause the crosslinking and homogeneity of MMA. A large number of polymers are generated, which reduces the grafting efficiency; using radiation to initiate graft polymerization, the grafting object is single, the radiation is extremely harmful, and it is easy to cause the burning, degradation, and oxidation of straw; the use of free radical initiators has poor comprehensive performance and the preparation complicated process

The ones with high grafting efficiency are expensive, and the ones that are cheap and non-toxic have low activity for initiating grafting

In addition, the graft polymerization of plasma method mainly synthesizes membrane materials, and almost no powder materials are polymerized, and the graft polymerization of corn stalks and MMA as raw materials has not been reported.

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