Polymethyl ethyl dicarbonate/graphene oxide nano composite material and preparation method thereof

Abstract

The invention discloses a polymethyl ethyl dicarbonate / graphene oxide nano composite material and a preparation method thereof. The composite material is prepared from the following components in parts by weight: 100 parts of degradable polymethyl ethyl dicarbonate used as a composite material matrix, 5 to 20 parts of a water-soluble macromolecular material used as a dispersing medium and 0.1 to 3 parts of graphene oxide used as a filling material. The preparation method comprises the following steps: firstly dispersing the graphene oxide into the water-soluble macromolecular material, and jointly feeding the water-soluble macromolecular material with the dispersed graphene oxide and the polymethyl ethyl dicarbonate into an extruder or a mixer for melt blending, thereby obtaining the polymethyl ethyl dicarbonate / graphene oxide nano composite material. The melt blending is performed at the temperature of 130 to 200 DEG C for 5 to 15 minutes. The composite material prepared through the preparation method is high in thermal and mechanical property, and the preparation method of the composite material is simple, feasible, safe and environmentally-friendly.

Description

technical field [0001] The invention relates to the field of polymer nanocomposite materials, in particular to a polymethylethylene carbonate / graphene oxide nanocomposite material and a preparation method thereof. Background technique [0002] Polymethylethylene carbonate (PPC) is made of carbon dioxide (CO 2 ) and propylene oxide (PO), due to its direct consumption of carbon dioxide and fully biodegradable properties, it has attracted more and more attention. PPC has good toughness, oxygen resistance, water resistance and biocompatibility, and has a good application prospect in the field of biomedical materials and packaging materials. However, the existence of the ether bond in PPC makes the chain segment easy to rotate around the ether bond, which increases the flexibility of the chain, makes it have a lower glass transition temperature, lower tensile strength, and poor thermodynamic properties, which limits its Applications. [0003] In order to expand the application...

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Problems solved by technology

However, in this method, the extraction process is complicated, the efficiency is low, and the workload is large, so it is difficult to realize industrial application

And in the Chinese patent that publication number is CN102719070A, disclose a kind of preparation method of novel polymethylethylene carbonate nano-composite material, this method is to disperse nano-filler in the organic solvent DMF, then add PPC, stir until uniform , drying and removing organic solvents to prepare PPC nanocomposites. Although this preparation process can obtain composite materials with better dispersion of nanofillers, a large amount of organic solvents that are harmful to the environment and human body are used, and they are difficult to volatilize and are not easy to completely remove. Therefore, it has a certain impact on the performance of composite materials, and it is difficult to meet environmental protection standards.

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