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Thesis Qihang Chen.pdf (1.91 MB)

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Exploiting High Surface Area Polymer Gels for Dye Adsorption

Chen, Qihang
http://rave.ohiolink.edu/etdc/view?acc_num=akron1619184015747879

Abstract Details

2021, Master of Science in Polymer Engineering, University of Akron, Polymer Engineering.
In this study, high specific surface area syndiotactic polystyrene (sPS) and polyimide (PI) gels were used in dye adsorption from aqueous solutions. Gels in the form of monoliths and microparticles produced via microfluidic flows were used. Gel microparticles with multiple internal holes were fabricated by adjusting the buoyancy and surface forces. The gel particles and monoliths were supercritically dried for characterization purposes. The performance of such materials as adsorbents was evaluated by conducting dye adsorption experiments with factors such as dye concentration in solutions, pH values, nature of polymer in the gels, and adsorbent shape and size. Both methylene blue and Sudan III were used for adsorption experiments, although the mechanism of adsorption of methylene blue was elaborated. The results revealed that π-π interactions due to the presence of benzene rings played a role, while adsorption of a cationic dye was dependent on the electrostatic interactions between the dye molecules and the PI surface. The extent of adsorption of methylene blue on PI reduced with a reduction of pH. The adsorption mechanism was explained using the affinity between the adsorbents and the adsorbates. The adsorption kinetics of methylene blue was described using a pseudo-second order adsorption model.
Sadhan Jana, PhD (Advisor)
Fardin Khabaz, PhD (Committee Chair)
Weinan Xu, PhD (Committee Member)
89 p.
Polymers
gels; polyimide; syndiotactic polystyrene; methylene blue; adsorption

Recommended Citations

Citations

  • Chen, Q. (2021). Exploiting High Surface Area Polymer Gels for Dye Adsorption [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1619184015747879

    APA Style (7th edition)

  • Chen, Qihang. Exploiting High Surface Area Polymer Gels for Dye Adsorption. 2021. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1619184015747879.

    MLA Style (8th edition)

  • Chen, Qihang. "Exploiting High Surface Area Polymer Gels for Dye Adsorption." Master's thesis, University of Akron, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=akron1619184015747879

    Chicago Manual of Style (17th edition)

akron1619184015747879
252
© 2021, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.
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