Preparation and Water Retention Properties of Montmorillonite Modified by EL-10 Emulsifying Agent

Aiming at the problem of available water conservation in desertification ecological restoration, we prepared the water retention materials with montmorillonite（MMT） modified by Castor Oil Polyoxyethylene Ether（10）（EL-10） emulsifying vegetable waxes. The water retention property was studied in simula...

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Bibliographic Details
Published in:Journal of Wuhan University of Technology. Materials science edition 2017-08, Vol.32 (4), p.806-811
Main Authors: Qu, Yongping, Zhang, Zengzhi, Li, Cuilan
Format: Article
Language:English
Subjects:
Advanced Materials
Castor oil
Cementing
Chemical bonds
Chemical composition
Chemistry and Materials Science
Clay
Desertification
Emulsifying agents
Evaporation
Germination
Grasses
Lamellar structure
Materials Science
Montmorillonite
Permeability
Planting
Polyoxyethylene
Product design
Restoration
Retention
Water conservation
Waxes
X射线衍射分析
乳化剂
保水性能
保水材料
制备
改性粘土
改性蒙脱土
紫外可见光谱
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Summary:Aiming at the problem of available water conservation in desertification ecological restoration, we prepared the water retention materials with montmorillonite（MMT） modified by Castor Oil Polyoxyethylene Ether（10）（EL-10） emulsifying vegetable waxes. The water retention property was studied in simulated desertification climate, and the materials were analyzed and characterized by UV-Vis, SEM, FTIR and XRD measurements. Moreover, a UV carbon arc lamp was used to test the resistance to aging. The experimental results show that the emulsion has good dispersity. Both the water retention property and the aging resistance performance of the modified clay were excellent. The lamellar structure and chemical composition of MMT had no obvious changes before and after modification. The surfaces of clay particles were coated uniformly with modified MMT, so the loose clay particles were cemented together by vegetable waxes. Meanwhile, the original big hydrophilic pores between the clay particles turned into capillary hydrophobic pores. So the clay particles formed a bonding layer which could inhibit water evaporation. Grass-planting experiment showed that reasonable mass ratio of vegetable waxes and EL-10 was 1：18. The materials not only had great water retention property but also maintained sound air permeability so that the germination rate of grass seed significantly increased from 8% to 52%.
ISSN:1000-2413
1993-0437
DOI:10.1007/s11595-017-1672-0