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首页> 外文期刊>Journal of Applied Polymer Science >Modification of regenerated cellulose membrane by impregnation of silver nanocrystal clusters
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Modification of regenerated cellulose membrane by impregnation of silver nanocrystal clusters

机译：通过浸渍银纳米晶体簇改性再生纤维素膜

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摘要

Regenerated cellulose forms a very important class of basic material with diverse applications because of its hydrophilicity and insolubility in water. Thus, one of the applications of regenerated cellulose is used to fabricate membranes. However, short operational lifetime is one of the disadvantages of the regenerated cellulose. In this research, surface modification of the cellophane membrane was carried out by silver nanoclusters. Silver colloids were formed in situ by chemical and photochemical reduction, and then, silver particles were deposited uniformly onto the surface of the cellophane membrane. The maximum amount of silver deposition was found to be 2.55% by weight in this modification. The modified and unmodified membranes were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray analysis to indicate silver nanocrystalline cluster particles on the modified membrane. SEM images indicate well-dispersed silver particles with an average size of 0.65 mu m on the membrane. XRD patterns showed that the size of the silver crystals was 3.9 nm. The surface properties of modified and unmodified membranes were studied by the contact angle. Water absorption, oxidative resistance, salt permeability, and thermal stability were investigated. This study revealed that the modified membrane is more resistant against the oxidative cleavage than the unmodified one moreover, the salt permeability increased after the treatment. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48292.
机译：再生纤维素形成具有多种应用的非常重要的基本材料，因为其水中的亲水性和不溶性。因此，再生纤维素的应用之一用于制造膜。然而，短暂的操作寿命是再生纤维素的缺点之一。在该研究中，通过银纳米能器进行玻璃烷膜的表面改性。通过化学和光化学还原原位形成银胶体，然后，将银颗粒均匀地沉积在玻璃烷膜的表面上。在该修饰中发现最大银沉积量为2.55重量％。通过X射线衍射（XRD），扫描电子显微镜（SEM）和能量分散X射线分析表征改性和未改性的膜，以表示改性膜上的银纳米晶体簇颗粒。 SEM图像表示膜上平均尺寸为0.65μm的良好分散的银颗粒。 XRD图案表明，银晶体的尺寸为3.9nm。通过接触角研究改性和未改性膜的表面性质。研究了吸水性，氧化性，盐渗透性和热稳定性。该研究表明，改性膜更耐氧化裂解比未修饰的氧化裂解更耐氧化，治疗后盐渗透性增加。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,48292。

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