4.5 Article

Fabrication and Physicochemical Study of B2SA-Grafted Poly(vinyl Alcohol)-Graphene Hybrid Membranes for Dehydration of Bioethanol by Pervaporation

期刊

MEMBRANES
卷 11, 期 2, 页码 -

出版社

MDPI
DOI: 10.3390/membranes11020110

关键词

poly(vinyl alcohol); B2SA; graphene; bioethanol; pervaporation

资金

  1. King Khalid University [R.G.P 2/107/41]
  2. Vision Group on Science and Technology, Karnataka, India [GRD-540]

向作者/读者索取更多资源

In this study, graphene-incorporated PVA-TEOS hybrid membranes were prepared and characterized for their physicochemical properties. The results showed that the addition of graphene significantly enhanced the mechanical strength and thermal stability of the membranes, leading to improved pervaporation performance.
Tetraethylorthosilicate (TEOS)-crosslinked poly(vinyl alcohol) (PVA) solution was prepared and treated with benzaldehyde 2 sulphonic sodium salt acid (B2SA) for sulfonation. Different contents of graphene were incorporated into B2SA-grafted PVA-TEOS hybrid membrane to improve the membrane stability, mechanical strength, and overall pervaporation performance of the membranes. Membranes were fabricated using the casting technique. Developed membranes were then analyzed for their physicochemical changes by means of Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), scanning electron microscope (SEM), wide-angle X-ray diffraction (WAXD), thermogravimetric analysis (TGA), contact angle analysis (CA), and mechanical strength. The lower d-spacing value observed in WAXD was evidence for the decreased inter-chain distance between the polymer chains. DSC exhibited the enhanced thermal stability of the developed membranes compared to the plane PVA membrane with enhancement in T-g value (106 degrees C), which was well above the pervaporation experimental temperature. Incorporation of graphene induced higher mechanical strength to the fabricated membranes. Further, the membranes were tested for the pervaporation separation of bioethanol. All the membranes were stable throughout the pervaporation studies, with M-2 G showing the total permeation flux of 11.66 x 10(-2) kg/(m(2) h) at 30 degrees C.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据