Method for preparing graphene high-oil absorption resin
An oleoresin, graphene technology, applied in separation methods, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problems of no antibacterial properties, slow oil absorption rate, low oil absorption rate, etc., to achieve excellent hydrophobicity and affinity. Oily performance, high oil absorption rate, and the effect of improving lipophilicity
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Embodiment 1
[0050] Modified porous graphene oxide 20g obtained by polydimethylsiloxane modification, tea polyphenols 80g, sodium lauryl sulfate 0.2g, and made by the following steps:
[0051] Step 1. Add sodium lauryl sulfate into deionized water and stir evenly, then add tea polyphenols, raise the temperature to 40° C., and continue stirring for 5 minutes to obtain a mixed solution.
[0052] Step 2, adding modified porous graphene oxide to the mixed solution of step 1, so that the modified porous graphene oxide concentration is 1mg / mL, ultrasonically dispersed for 4h, to obtain a suspension containing modified porous graphene oxide.
[0053] Step 3. Put the suspension in step 2 through vacuum drying at -40° C. to 60° C. for 12-60 hours to obtain a modified porous graphene antibacterial composition loaded with tea polyphenols.
Embodiment 2
[0055] Modified porous graphene oxide 80g obtained by polydimethylsiloxane modification, chitosan 20g, sodium dodecylbenzene sulfonate 8g, and made by the following steps:
[0056] Step 1. Add sodium lauryl sulfate into deionized water and stir evenly, then add chitosan, heat up to 70° C., and continue stirring for 25 minutes to obtain a mixed solution.
[0057] Step 2, adding modified porous graphene oxide to the mixed solution of step 1, so that the modified porous graphene oxide concentration is 10mg / mL, and ultrasonically dispersed for 20h to obtain a suspension containing modified porous graphene oxide.
[0058] Step 3, putting the suspension in step 2 through vacuum drying at -60° C. for 60 h to obtain a chitosan-loaded modified graphene antibacterial composition.
Embodiment 3
[0060] Modified porous graphene oxide 50g obtained by polydimethylsiloxane modification, tea polyphenols 25g, chitosan 25g, sodium lauryl sulfonate 2.5g, and made by the following steps:
[0061] Step 1. Add sodium dodecylsulfonate to deionized water evenly, then add tea polyphenols and chitosan, heat up to 50°C, and continue stirring for 15 minutes to obtain a mixed solution.
[0062] Step 2, adding modified porous graphene oxide to the mixed solution of step 1, so that the modified porous graphene oxide concentration is 5mg / mL, and ultrasonically dispersed for 16h to obtain a suspension containing modified porous graphene oxide.
[0063] Step 3. Put the suspension in step 2 through vacuum drying at -50° C. for 36 hours to obtain a modified graphene antibacterial composition loaded with a natural antibacterial agent.
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