Hydrophilic/hydrophobic polyacrylamide and polystyrene interpenetrating polymer network and application thereof

A polyacrylamide and interpenetrating polymer technology, which is applied in the field of hydrophilic/hydrophobic polyacrylamide and polystyrene interpenetrating polymer network, can solve the problems of poor adsorption performance of hydrophilic inhibitors and achieve elution regeneration Easy, reduced content, environmentally friendly and green effect in the preparation process

Active Publication Date: 2019-08-30
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its strong hydrophobicity, the adsorption performance of hydrophilic inhibitors in lignocellulosic hydrolyzate is poor, and this problem needs to be solved urgently to realize the efficient utilization of lignocellulosic biomass resources.

Method used

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  • Hydrophilic/hydrophobic polyacrylamide and polystyrene interpenetrating polymer network and application thereof
  • Hydrophilic/hydrophobic polyacrylamide and polystyrene interpenetrating polymer network and application thereof
  • Hydrophilic/hydrophobic polyacrylamide and polystyrene interpenetrating polymer network and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] (1) Preparation of hydrophilic / hydrophobic polyacrylamide and polystyrene interpenetrating polymer network

[0032] Prepare hydrophilic / hydrophobic polyacrylamide and polystyrene interpenetrating polymer network according to the following steps:

[0033] 1) Preparation of the first network of cross-linked polymethyl acrylate divinylbenzene white balls by suspension polymerization

[0034]Add 240mL of the water phase (the water phase contains 1.0% polyvinyl alcohol and 3-5 drops of 1% methylene blue solution) into a 500mL three-necked flask equipped with a mechanical stirrer, a thermometer and a serpentine condenser. After heating to 50°C in an oil bath, add the oil phase to the water phase (add 26.7 g of methyl acrylate monomer, 13.3 g of divinylbenzene, 20 g of toluene, 20 g of n-heptane and 0.4 g of benzoyl peroxide ), after feeding nitrogen for 5 minutes, adjust the stirring speed to 160 rpm to control the size of oil droplets. Then slowly raise the temperature to ...

Embodiment 2

[0047] Compared with Example 1, the difference is: in the process of preparing hydrophilic / hydrophobic polyacrylamide and polystyrene interpenetrating polymer network, the mass ratio of styrene and divinylbenzene in step (2) is 3 : 1, in the step (3), the polyethylene polyamine is triethylenetetramine, and the quality of triethylenetetramine is twice that of the polymethylacrylate polystyrene interpenetrating polymer network, and the amination reaction is carried out at 140° C. for 8 hours.

[0048] The above-mentioned hydrophilic / hydrophobic polyacrylamide and polystyrene interpenetrating polymer network is used to remove fermentation inhibitors from lignocellulose hydrolyzate, and the specific steps are:

[0049] 1) Adjust the pH of the rice straw hydrolyzate to 1 by taking sodium hydroxide, and filter to obtain a supernatant. It was determined that the absorbance of the supernatant at 540nm was 0.921, composed of glucose 11.65g / L, xylose 23.98g / L, arabinose 3.21g / L, formic ...

Embodiment 3

[0052] Compared with Example 1, the difference is: in the process of preparing hydrophilic / hydrophobic polyacrylamide and polystyrene interpenetrating polymer network, the mass ratio of styrene and divinylbenzene in step (2) is 1 : 3, in the step (3), the polyethylene polyamine is triethylenetetramine, and the quality of triethylenetetramine is 3 times that of the polymethylacrylate polystyrene interpenetrating polymer network, and the amination reaction is carried out at 150°C for 12h.

[0053] The above-mentioned hydrophilic / hydrophobic polyacrylamide and polystyrene interpenetrating polymer network is used to remove fermentation inhibitors from lignocellulose hydrolyzate, and the specific steps are:

[0054] 1) Adjust the pH of the wheat straw hydrolyzate to 3 by taking potassium hydroxide, and filter to obtain a supernatant. It was determined that the absorbance of the supernatant at 540nm was 0.783, composed of glucose 5.02g / L, xylose 22.13g / L, arabinose 1.73g / L, formic a...

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Abstract

The invention discloses a hydrophilic / hydrophobic polyacrylamide and polystyrene interpenetrating polymer network and application thereof. The particle size distribution of the hydrophilic / hydrophobicpolyacrylamide and polystyrene interpenetrating polymer network is 0.25-0.85mm, the average aperture is 8-40nm, the active amino content is 0.6-2.2mmol / g, the average specific surface area is 150-1000m<2> / g, and the total pore volume is 0.5-1.3cm<3> / g. The hydrophilic / hydrophobic polyacrylamide and polystyrene interpenetrating polymer network is prepared, hydrophilic amide groups and hydrophobicfunctional groups are introduced, straw hydrolysate is subjected to detoxification treatment, thus intermolecular hydrogen bonds are formed between the hydrophilic amide groups and the hydrophobic functional groups and hydrophilic fermentation inhibitors in the hydrolysate, most hydrophilic fermentation inhibitors can be removed, and the content of straw dilute acid hydrolysis byproducts can be reduced.

Description

technical field [0001] The invention relates to the technical field of functional polymer materials, in particular to a hydrophilic / hydrophobic polyacrylamide and polystyrene interpenetrating polymer network and its application. Background technique [0002] Fossil energy is not renewable. Extensive use of fossil energy has caused energy shortages and serious environmental pollution problems. All countries in the world have accelerated the development and utilization of new energy and renewable energy, among which lignocellulosic biomass resources have attracted widespread attention from all over the world due to their outstanding advantages such as wide source, large quantity, and renewable energy. my country is a traditional agricultural country, which produces about 900 million tons of straw waste every year. The traditional way to deal with straw is incineration, which not only has low utilization efficiency, but also has prominent problems such as large smoke and dust...

Claims

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Application Information

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IPC IPC(8): C08F8/32C08F220/14C08F212/36C08F212/08C08L25/08C08L25/02C08L33/14C08J9/28B01J20/26B01J20/28
CPCB01J20/265B01J20/28004B01J20/28061B01J20/28064B01J20/28073B01J20/28076B01J20/28083C08F8/32C08F212/08C08F212/36C08F220/14C08J9/28C08J2201/0502C08J2333/14C08L25/02C08L25/08C08L2205/04C08L33/14
Inventor 陈新德陈雪芳熊莲黄超张海荣
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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