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首页> 外文期刊>Journal of Applied Polymer Science >Effect of aggregate size on liquid absorption characteristics of konjac glucomannan superabsorbent
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Effect of aggregate size on liquid absorption characteristics of konjac glucomannan superabsorbent

机译：骨料大小对康时代葡糖甘油植物超吸收剂液体吸收特性的影响

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摘要

In this article, four kinds of konjac glucomannan based superabsorbent polymers (KSAPs) with different aggregate sizes were obtained by sieving the KSAP powders manually. They were characterized by scanning electronic microscopy (SEM), Fourier transform infrared (FTIR), thermogravimetric analysis (TGA), and optical contact angle (OCA), and the effects of aggregate size on liquid absorption characteristics of KSAP were studied in detail. The results show that the coarse KSAP particles were aggregated by many microspheres, while the fine particles were well dispersed with 50-150 mu m particle size. OCA dynamic images showed the enhanced hydrophilicity for the finer particles. The liquid absorption measurements demonstrated that water and physiological saline absorption velocity of KSAP increased for the finer particles, while their ultimate water holding capacity decreased accordingly. The liquid absorption capacity of the finest sample (75 mu m) could reach its maximum value (332.5 +/- 5.6 g/g) in 0.5 min, while the coarsest sample (850 mu m) reached the maximum value (532.5 +/- 1.2 g/g) in 16 min. The reason for this phenomenon was discussed, and a new model was proposed to explain it. We believe that the results of this article would be meaningful in application of KSAP as superabsorbent materials. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45416.
机译：在本文中，通过手动筛分KSAP粉末获得具有不同聚集体尺寸的基于Konjac的超吸收性聚合物（KSAPS）的四种基于Konjac Glucomannan（KSAPS）。它们的特征在于扫描电子显微镜（SEM），傅里叶变换红外（FTIR），热重分析（TGA）和光学接触角（OCA），并详细研究了骨料大小对KSAP液体吸收特性的影响。结果表明，粗kSAP颗粒被许多微球聚集，而细颗粒均匀分散，粒度为50-150μm。 OCA动态图像显示出细粒的增强的亲水性。液体吸收测量表明，对于更精细的颗粒，KSAP的水和生理盐水吸收速度增加，而其最终的水持续量相应地降低。最佳样品（75μm）的液体吸收能力在0.5分钟内达到其最大值（332.5 +/- 5.6g / g），而粗味的样品（850 mu m）达到最大值（532.5 +/- 1.2 g / g）在16分钟内。讨论了这种现象的原因，提出了一种新模型来解释它。我们认为本文的结果在将KSAP作为超吸收材料的应用是有意义的。 （c）2017 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2017,134,45416。

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