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首页> 外文期刊>Journal of Applied Polymer Science >Effect of using polymeric materials in ecological sand-fixing of Kerqin Sandy Land of China
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Effect of using polymeric materials in ecological sand-fixing of Kerqin Sandy Land of China

机译：高分子材料在科尔沁沙地生态固沙中的作用

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For the first time, the main characteristics of the polymeric materials are considered for understanding their possible application in ecological sand-fixing. In this investigation, two emulsions, named as E2, a poly(vinyl acetate) emulsion, and E7, a vinyl acetate-ethylene copolymer emulsion, have been selected for a series of tests related to the practical requirements for ecological sand-fixing. Besides the sand-fixing properties and the thermal aging and freeze-thaw stabilities of the emulsions, their effects in increasing the growth of both microbes and plants in sandy lands have been evaluated by field experiments in Kerqin Sandy Land of China, and the relationship between the performance and structure of the two emulsions has also been described. The experimental results show that both emulsions could significantly improve the compressive strength of treated sand and could withstand the changes in temperature of the Kerqin Sandy Land. However, different effects were exhibited in promoting the growth of microbes, in facilitating the accumulation of organic fertilizer and soluble salt, and in increasing the crop yield. All of the differences are attributed to their different molecular chain structures. These findings suggest that the structure of a polymeric emulsion should be the first consideration for the materials used in ecological sand-fixing, and ecological sand-fixing is a successful method for the stabilization of sandy land and the restoration of desertified land in semiarid regions. (c) 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44102
机译：首次考虑了聚合物材料的主要特性，以了解其在生态固沙中的可能应用。在这项研究中，已选择两种乳液，分别称为E2（聚醋酸乙烯酯乳液）和E7（醋酸乙烯酯-乙烯共聚物乳液）进行一系列与生态固沙的实际要求有关的测试。除了在沙地的固沙性，热老化和冻融稳定性外，还通过中国科尔沁沙地的田间试验评估了它们在增加沙地微生物和植物生长方面的作用，以及它们之间的关系。还描述了两种乳液的性能和结构。实验结果表明，两种乳液均可显着提高处理过的沙土的抗压强度，并能承受科​​尔沁沙地的温度变化。然而，在促进微生物的生长，促进有机肥料和可溶性盐的积累以及增加农作物产量方面显示出不同的效果。所有差异均归因于它们不同的分子链结构。这些发现表明，聚合物乳液的结构应该是用于生态固沙的材料的首要考虑因素，而生态固沙是在半干旱地区稳定沙地和恢复荒漠化土地的成功方法。 （c）2016 Wiley Periodicals，Inc. J. Appl。 Polym。科学2016，133，44102

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