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Polyether type polyurethane-graphene oxide foam as well as preparation method and application thereof

A technology of polyether polyurethane and graphene foam, applied in chemical instruments and methods, adsorption of water/sewage treatment, water pollutants, etc., can solve problems such as damage to cell integrity, oxidative stress damage, and cell membrane damage, and achieve Accelerate the efficiency of interspecies electron transfer, good hydrophilicity, and accelerate the effect of degradation

Inactive Publication Date: 2020-06-23
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, nano-graphene oxide may cause direct physical damage to the cell membrane due to its nanoscale characteristics. The sheet-like structure of nano-graphene oxide and the thickness of the nano-scale sheet make it have relatively sharp edges, which may cause damage to the cell membrane and destroy the cell membrane. Integrity, studies have shown that nanographene oxide may directly enter plant or bacterial cells through endocytosis or physical incision to cause oxidative stress damage

Method used

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  • Polyether type polyurethane-graphene oxide foam as well as preparation method and application thereof
  • Polyether type polyurethane-graphene oxide foam as well as preparation method and application thereof
  • Polyether type polyurethane-graphene oxide foam as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) Weigh 5 mL of black material pure diphenylmethane diisocyanate (pure MDI), 10 mL of white material (polyurethane combined polyether: 200 kg 99.5% polyether polyol, 200 kg 99% silicone oil, catalyst and 200 kg chain extender); Mix the black material and the white material within 30s, stir with a glass rod at a speed of 100rpm until the liquid turns white, start to foam automatically for 5 minutes, until the foaming temperature drops to room temperature, the foaming is completed, divide into 2cm× 2cm×2cm square blocks, ultrasonically cleaned with 75% ethanol for 15 minutes, and dried in a constant temperature oven at 80°C for 15 minutes to obtain polyether polyurethane-graphene oxide foam.

[0035] 2) Accurately weigh 300 mg of multilayer graphene oxide solids with an analytical balance and place them in 1000 ml of ultrapure water for ultrasonic dispersion. The ultrasonic power is 450 W, and the speed of the stirring rod is set to 100 rpm. Stir once in half an hour, an...

Embodiment 2

[0038] 1) Weigh 5 mL of black material pure diphenylmethane diisocyanate (pure MDI), 10 mL of white material (polyurethane combined polyether: 200 kg 99.5% polyether polyol, 200 kg 99% silicone oil, catalyst and 200 kg chain extender); Mix the black material and the white material within 60s, stir with a glass rod at a speed of 80rpm until the liquid turns white, start to foam automatically for 3 minutes, until the foaming temperature drops to normal temperature, the foaming is completed, divide into 2cm× 2cm×2cm square blocks, ultrasonically cleaned with 75% ethanol for 15 minutes, and dried in a constant temperature oven at 80°C for 15 minutes to obtain polyether polyurethane-graphene oxide foam.

[0039] 2) Accurately weigh 300 mg of multilayer graphene oxide solids with an analytical balance and place them in 1000 ml of ultrapure water for ultrasonic dispersion. The ultrasonic power is 300 W, and the speed of the stirring rod is set to 100 rpm. Stir once in half an hour, a...

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Abstract

The invention discloses polyether type polyurethane-graphene oxide foam as well as a preparation method and an application thereof, which belong to the technical field of biological fillers. The polyether type polyurethane foam is used as a carrier of a fixed carrier graphene oxide, and the polyether type polyurethane foam is shaken and subjected to ultraviolet curing in a graphene oxide dispersion liquid to obtain the polyether type polyurethane-graphene oxide foam. The method is simple to operate, low in cost, green and environment-friendly, and provides a new way for immobilization of graphene. The obtained polyether type polyurethane-graphene oxide foam retains the excellent properties of polyether type polyurethane foam and graphene oxide, has good hydrophilicity, water binding capacity and surface charge distribution, has a good biofilm culturing effect, and has a good effect when being used as a biological filler for sewage treatment.

Description

technical field [0001] The invention belongs to the technical field of biological fillers, and in particular relates to a polyether polyurethane-graphene oxide foam and its preparation method and application. Background technique [0002] At present, there are many methods for the removal of trace organic matter in municipal sewage, but these methods have some problems, such as high energy consumption, short life, high cost, etc., and the energy-saving, high-efficiency and strong coupling of sewage biological treatment technology have become possible. The first choice for continuous pollution control technology. [0003] Compared with other biological fillers, polyurethane foam has a larger specific surface area, and it not only provides growth space for heterotrophic bacteria, but also creates growth conditions for autotrophic bacteria, and microorganisms are easier to attach and grow on it. Due to the interconnection of internal pores, polyurethane foam can provide three ...

Claims

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Application Information

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IPC IPC(8): C02F3/00C02F1/28C02F101/34
CPCC02F1/283C02F3/00C02F2101/34
Inventor 朱超俞烨岳丹晴陈喆倩郝永永丁泽
Owner SHAANXI UNIV OF SCI & TECH
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