Water extractable arabinoxylan aerogels prepared by supercritical CO2 drying.

Water extractable arabinoxylan aerogels prepared by supercritical CO2 drying.
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通过超临界二氧化碳干燥制备的水可提取阿拉伯素气凝剂。

DOI:
10.3390/molecules18055531
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发表时间:
2013-05-14
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Rascón-Chu A
Rascón-Chu A
中科院分区:
其他
文献类型:
--
作者:
Marquez-Escalante J;Carvajal-Millan E;Miki-Yoshida M;Alvarez-Contreras L;Toledo-Guillén AR;Lizardi-Mendoza J;Rascón-Chu A

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在超临界条件下,通过用二氧化碳从醇凝胶(以醇作为溶剂的WEAX水凝胶)中萃取溶剂来制备水可萃取阿拉伯木聚糖(WEAX)气凝胶。WEAX气凝胶,其特征在于使用扫描电子显微镜和吸附和脱附氮等温线。显微照片表明WEAX气凝胶中存在不均匀的多孔网络结构。该材料的吸附/脱附氮等温线为IV型,这证实该材料具有介孔结构。对WEAX气凝胶的复水性能进行了评价,并对WEAX气凝胶的吸水机理进行了探讨。WEAX气凝胶的吸水机理为非Fickian(n = 0.54)。
Water extractable arabinoxylan (WEAX) aerogels were prepared by extracting the solvent from the alcogels (WEAX hydrogels with an alcohol as the solvent) with carbon dioxide under supercritical conditions. WEAX aerogels were characterized using scanning electron microscopy and adsorption and desorption nitrogen isotherms. The micrographs indicate a heterogeneous porous network structure in WEAX aerogel. Adsorption/desorption nitrogen isotherms of this material were type IV, which confirm that this material possess a mesoporous structure. WEAX aerogels rehydration capability was evaluated and the water absorption mechanism was determined. The WEAX aerogels water absorption mechanism was non-Fickian (n = 0.54).
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发表时间: 2010-09-01
影响因子: 3.9
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