Preparation and properties of PPS/MWCNT@GO hybrid membrane

doi:10.16085/j.issn.1000-6613.2019-2074

Abstract

Abstract:

The chemical crosslinking substance of oxidized multi-wall carbon nanotubes (MWCNT) and graphene oxide (GO) hydrophilic nanoparticles (MWCNT@GO) was prepared which was used as fillers to improve the performance of PPS membrane. During the preparation of polyphenylene sulfide (PPS) membrane by thermally induced phase separation (TIPS) method, MWCNT@GO nanoparticles were introduced by physical blending method to prepare PPS/MWCNT@GO hybrid membrane. TEM, XPS, Raman, XRD and FTIR were used to characterize the structure of nanoparticles and the changes of surface functional groups in the crosslinking process. SEM, CSM, DSC, aperture tester, contact Angle tester and tensile tester were used to characterize the morphology and structure characteristics of hybrid membranes. At the same time, the water flux of the hybrid membrane and the interception of albumin from bovine serum (BSA) or methylene blue (MB) dyes were tested. The results indicated that the pore diameter of PPS/MWCNT@GO hybrid membrane was reduced to 0.06μm, and the hybrid membrane had the excellent thermal stability and mechanical properties. At the same time, PPS hybrid membrane showed a high water flux up to 130L/(m²?h), and better separation performance of the interception rate of BSA close to 100% and the interception rate of MB dye to 92%. This hybrid membrane was expected to be widely used in high temperature, strong acid, strong alkali and corrosive water pollution environment.

Key words: filtration, membranes, nanoparticles, polyphenylene sulfide, multi-wall carbon nanotube, graphene oxide

摘要：

将氧化后的多壁碳纳米管（MWCNT）和氧化石墨烯（GO）亲水性纳米粒子化学交联物（MWCNT@GO）作为填充物，在使用热致相分离（TIPS）法制备聚苯硫醚（PPS）膜的过程中，通过物理共混方式引入MWCNT@GO纳米粒子，制备PPS/MWCNT@GO杂化膜，用以提升PPS膜的性能。分别通过TEM、XPS、Raman、XRD和FTIR表征MWCNT和GO的结构以及交联过程中的官能团变化；利用SEM、CSM、DSC、孔径测试仪、接触角测试仪和拉伸测试仪表征杂化膜的形貌以及特性；同时，对杂化膜的水通量以及蛋白大分子和甲基蓝染料的截留性能进行了测试。结果表明，PPS/MWCNT@GO杂化膜的孔径减小到0.06μm左右，杂化膜具备优异的热稳定性和机械性能；同时，杂化膜表现出了较高的水通量，可达130L/(m²?h)；较好的分离性能，对牛血清蛋白大分子（BSA）的截留率接近100%，对甲基蓝（MB）染料的截留率也达到了92%左右。该杂化膜有望在高温、强酸、强碱和腐蚀性水污染环境中广泛应用。

关键词: 过滤, 膜, 纳米粒子, 聚苯硫醚, 多壁碳纳米管, 氧化石墨烯

CLC Number:

TQ028.8

Kang JIA, Kunmei SU, Zhenhuan LI. Preparation and properties of PPS/MWCNT@GO hybrid membrane[J]. Chemical Industry and Engineering Progress, 2020, 39(10): 4102-4110.

贾康, 苏坤梅, 李振环. 一种PPS/MWCNT@GO杂化膜的制备及性能[J]. 化工进展, 2020, 39(10): 4102-4110.

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