The effect of kaolinite on the properties of lignocellulose superabsorbent from old corrugated container fiber fines

Document Type : Research Paper

Authors

1 MS.C., Wood and paper science and technology department, Natural resources faculty, Tarbiat Modares university, Noor, Mazandaran, Iran

2 Assistant Prof., Wood and paper science and technology department, Natural resources faculty, Tarbiat Modares university, Noor, Mazandaran, Iran

3 Associate Prof., Wood and paper science and technology department, Natural resources faculty, Tarbiat Modares university, Noor, Mazandaran, Iran

Abstract

An instance for high added value applications of fines and fiber fractions of old corrugated containers can be production of super-absorbents. As high water gain in super-absorbents leads to a loss of mechanical resistance, and meanwhile addition of chemical cross-linkers increases the costs and environmental problems, therefore, in this research it was tried to improve super-absorbent properties by using mineral additives such as kaolinite. Accordingly, electron microscopy images, X-ray spectra and water absorption tests were studied. The results showed that the natural super-absorbent structure without any other chemical could absorb water more than 30 times as much its own weight. Eventually, it was found that although high amounts of kaolinite decreased the water absorption, but adding appropriate less amount (5%) of kaolinite improved the mechanical properties of the superabsorbent without significant decrease in the water absorption amount.

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Main Subjects


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