A biopolymer-based 3D printable hydrogel for toxic metal adsorption from water

被引：36

作者：

Appuhamillage, Gayan A. ^{[1
]}

Berry, Danielle R. ^{[1
]}

Benjamin, Candace E. ^{[1
]}

Luzuriaga, Michael A. ^{[1
]}

Reagan, John C. ^{[1
]}

Gassensmith, Jeremiah J. ^{[1
]}

Smaldone, Ronald A. ^{[1
]}

机构：

[1] Univ Texas Dallas, Dept Chem & Biochem, Richardson, TX 75083 USA

来源：

POLYMER INTERNATIONAL | 2019年 / 68卷 / 05期

基金：

美国国家科学基金会;

关键词：

3D printing; chitosan; biopolymer; hydrogels; water purification; CROSS-LINKED CHITOSAN; EFFICIENT REMOVAL; SUSTAINED-RELEASE; POLYLACTIC ACID; HEAVY-METALS; IONS; PH; COMPOSITE; SILICA; BEADS;

D O I：

10.1002/pi.5787

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 [高分子化学与物理];

摘要：

Herein, we describe a 3D printable hydrogel that is capable of removing toxic metal pollutants from aqueous solution. To achieve this, shear-thinning hydrogels were prepared by blending chitosan with diacrylated Pluronic F-127 which allows for UV curing after printing. Several hydrogel compositions were tested for their ability to absorb common metal pollutants such as lead, copper, cadmium and mercury, as well as for their printability. These hydrogels displayed excellent metal adsorption with some examples capable of up to 95% metal removal within 30 min. We show that 3D printed hydrogel structures that would be difficult to fabricate by conventional manufacturing methods can adsorb metal ions significantly faster than solid objects, owing to their higher accessible surface areas. (c) 2019 Society of Chemical Industry

引用

页码：964 / 971

页数：8

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