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Oligo(ß-alanine) Fillers for Reinforcement of Rubbers

Shang, Meng
http://rave.ohiolink.edu/etdc/view?acc_num=akron1460404529

Abstract Details

2016, Master of Science in Polymer Engineering, University of Akron, Polymer Science.
The use of reinforcing fillers can improve mechanical properties of vulcanized rubber such as strength and stiffness and elasticity. Conventional reinforcing fillers are pre-formed particles, including carbon black and amorphous silica. On the other hand, oligo(ß-alanine)s have a strong propensity to form ß-sheets via hydrogen bonding, and these ß-sheets stack to form crystal. Our group has recently demonstrated that for thermoplastic elastomers, the crystal domains dispersed in a continuous elastomer phase reinforce the elastomer. The present thesis focuses on the use of monodisperse oligo(ß-alanine)s as supramolecular fillers for vulcanized rubbers. Since the polar ß-sheet is incompatibility with the non-polar rubber matrix, macroscopic phase separation is expected to be a problem. A long polar hydrocarbon chain is attached to ß-alanine to resolve the problem. In order to mix oligo(ß-alanine) with rubber, the melting temperature is designed to be just below or at the temperature of mixing. We anticipate a micelle can be formed with the ß-alanine moiety in the core and the hydrocarbon long chain as the corona. A series of ß-alanine derivatives have been synthesized with the above features. One has been chosen and studied as a supramolecular filler for reinforcement of SBR. Study of tensile properties of the vulcanized SBR demonstrates that the ß-alanine-based supramolecular filler does moderately reinforce the rubber.
Li Jia (Advisor)
61 p.
Polymers

Recommended Citations

Citations

  • Shang, M. (2016). Oligo(ß-alanine) Fillers for Reinforcement of Rubbers [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1460404529

    APA Style (7th edition)

  • Shang, Meng. Oligo(ß-alanine) Fillers for Reinforcement of Rubbers . 2016. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1460404529.

    MLA Style (8th edition)

  • Shang, Meng. "Oligo(ß-alanine) Fillers for Reinforcement of Rubbers ." Master's thesis, University of Akron, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1460404529

    Chicago Manual of Style (17th edition)

akron1460404529
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This open access ETD is published by University of Akron and OhioLINK.