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Asymmetric Hybrid Giant Molecules: Precise Synthesis and Phase Diagrams

Bai, Ruobing
http://rave.ohiolink.edu/etdc/view?acc_num=akron1459858207

Abstract Details

2016, Master of Science, University of Akron, Polymer Science.
Fluoro-functional materials are widely used because of their superior omniphobic properties. These properties mean that those materials are not only hydrophobic but also oleophobic. Their low surface free energy make these properties outstanding and useful. For example, fluorous materials have many applications in developing self-cleaning materials and anti-fogging films, etc. In this article, a typical way was used to synthesize some novel asymmetric giant surfactants, and the self-assembly behaviors of them were investigated in the bulk. Atomic transfer radical polymerization (ATRP) and sequential “click” approach were chosen to design and synthesize FPOSS-PSn samples which are one polyhedral oligomeric silsesquioxane cage with seven fluorinated alkyl chain and different molecular weights of polystyrene (PS). And their self-assembly behaviors in the bulk were found that they could form a lot of different ordered structures, such as lamellae, perforated layer, and cylinders. The general thing is that the functional groups on the POSS cages can affect the interaction parameters of different POSS cages with the PS chain. Then the POSS cages will separate from the PS domains to form a new phase. However, the FPOSS cages are likely to crystallize in the lamellae phase which will make further phase separation of the POSS cage from fluorous alkyl chain outside. These results will help us design and synthesize some interesting and useful self-assembling materials based on POSS-polymer with desired physical properties.
Stephen Z.D. Cheng (Advisor)
41 p.
Chemistry; Materials Science; Polymer Chemistry; Polymers
Self-assembly; precise synthesis; fluorous materials; POSS; giant surfactants

Recommended Citations

Citations

  • Bai, R. (2016). Asymmetric Hybrid Giant Molecules: Precise Synthesis and Phase Diagrams [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1459858207

    APA Style (7th edition)

  • Bai, Ruobing. Asymmetric Hybrid Giant Molecules: Precise Synthesis and Phase Diagrams . 2016. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1459858207.

    MLA Style (8th edition)

  • Bai, Ruobing. "Asymmetric Hybrid Giant Molecules: Precise Synthesis and Phase Diagrams ." Master's thesis, University of Akron, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1459858207

    Chicago Manual of Style (17th edition)

akron1459858207
482
© 2016, some rights reserved.Creative Commons License Asymmetric Hybrid Giant Molecules: Precise Synthesis and Phase Diagrams by Ruobing Bai is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by University of Akron and OhioLINK.