A hydrophobic porous adsorbent material and a method for preparing the same

By constructing a covalently bonded hydrophobic layer on the surface of loofah sponge, the problem of poor coating adhesion in the hydrophobic modification of loofah sponge was solved, achieving efficient hydrophobicity and oil absorption properties, and improving the stability and adsorption performance of the material.

CN122399752APending Publication Date: 2026-07-17HUANGHE S & T COLLEGE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUANGHE S & T COLLEGE
Filing Date
2026-04-21
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing methods for hydrophobic modification of loofah sponges suffer from poor coating adhesion, complex processes, and high environmental risks, which limit their application in the field of oil-water separation.

Method used

A two-step chemical modification method was adopted to graft acetyl groups onto the surface of loofah sponge via transesterification and to covalently graft long-chain aliphatic amines using dynamic enamine bonds to construct a stable hydrophobic layer.

Benefits of technology

This study improved the hydrophobic properties and structural stability of loofah sponges, solved the problem of poor coating adhesion, and enhanced oil absorption and recyclability.

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Abstract

本发明公开一种疏水多孔吸附材料及其制备方法，属于多孔吸附材料技术领域，制备方法通过如下步骤制备而成：将丝瓜络清洗干燥后，分散于亚氯酸钠溶液中煮沸至变白，水洗至中性；再分散于碱液中，搅拌反应后，交替水洗至中性，干燥得到纯化丝瓜络纤维素；将纯化丝瓜络纤维素加入到盛有溶剂的反应瓶中，加入酯化剂，搅拌反应，洗涤剂洗涤3次并干燥，得到乙酰乙酸丝瓜络纤维素；将乙酰乙酸丝瓜络纤维素分散于含长链脂肪族胺类化合物的乙醇溶液中，搅拌反应，洗涤剂洗涤3次，干燥得到疏水多孔吸附材料。本发明通过两步化学改性在丝瓜络表面构建共价键连接的疏水层，既保留丝瓜络的天然多孔结构，又赋予其优异的疏水性、吸油性能和循环使用性。
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