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首页> 外文期刊>Journal of Applied Polymer Science >Utilization of waste polystyrene and starch for superabsorbent composite preparation
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Utilization of waste polystyrene and starch for superabsorbent composite preparation

机译：利用废聚苯乙烯和淀粉制备超吸收性复合材料

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摘要

A superabsorbent composed of waste polystyrene, starch, and acrylic acid was prepared through emulsion polymerization. The effects of major factors such as starch, acrylic acid, initiator, crosslinker, and bentonite contents and the neutralization degree of acrylic acid on water absorbency were investigated to obtain optimum conditions with high swelling capacity. The superabsorbent hydrogel was characterized by scanning electron microscope (SEM), Fourier transform infrared (FTIR) spectroscopy, and thermogravimetric analysis (TGA). The FTIR results confirmed that the grafting polymerization took place among the polystyrene, acrylic acid, starch, and bentonite. The introduction of bentonite particles into the polystyrene-g-poly (acrylic acid)-co-starch system could increase the water absorbency. The superabsorbent composite containing 3 wt % bentonite had the highest water absorbency (500 g/g in distilled water and 49 g/g in 0.9 wt % NaCl solution).
机译：通过乳液聚合制备由废聚苯乙烯，淀粉和丙烯酸组成的超吸收剂。研究了淀粉，丙烯酸，引发剂，交联剂和膨润土含量等主要因素以及丙烯酸的中和度对吸水率的影响，以获得具有高溶胀能力的最佳条件。通过扫描电子显微镜（SEM），傅立叶变换红外（FTIR）光谱和热重分析（TGA）对超吸收性水凝胶进行了表征。 FTIR结果证实了接枝聚合发生在聚苯乙烯，丙烯酸，淀粉和膨润土之间。将膨润土颗粒引入聚苯乙烯-g-聚（丙烯酸）-共淀粉体系可以提高吸水率。包含3重量％的膨润土的超吸收性复合材料具有最高的吸水率（在蒸馏水中为500g / g，在0.9wt％的NaCl溶液中为49g / g）。

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