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Stimuli-responsive Materials From Thiol-based Networks

Brenn, William Alexander
http://rave.ohiolink.edu/etdc/view?acc_num=case149192088155293

Abstract Details

2017, Master of Sciences (Engineering), Case Western Reserve University, Macromolecular Science and Engineering.
Future stimuli-responsive materials – “smart” materials – will focus on introducing new types of stimuli responses into materials and creating materials that can respond to several stimuli in different ways. The effect of each of these focuses will be the introduction of many novel materials with a wide range of functionalities and properties. The aim of this work is the synthesis of such materials using thiol-based networks. The first chapter focuses on an effort to include thermally-responsive shape memory into an aerogel, using a semicrystalline polymer network and Cellulose Nanocrystals (CNCs). The semicrystalline domains of the network served to facilitate the shape fixing of the material and the CNCs were incorporated in an effort to prevent the gel from collapsing out of aerogel form when heated above the crystalline melting temperature. The second chapter centers on work synthesizing a liquid crystalline elastomer (LCE) using 2,6-bisbenzimidazolypyridine (bip) as the mesogen unit and using dynamic disulfide bonds as the crosslinks. Using bip as the mesogen allows the liquid crystalline transitions to be controlled using temperature, UV light, and exposure to metal ions. Including the dynamic disulfide crosslinks allows the material to be reprocessible, healable, and act as an adhesive.
Stuart Rowan (Advisor)
Michael Hore (Committee Member)
Gary Wnek (Committee Member)
51 p.
Engineering; Materials Science; Polymer Chemistry; Polymers
Stimuli-responsive materials, stimuli, responsive, polymers, aerogels, shape memory, liquid crystalline elastomers, LCEs, dynamic liquid crystalline elastomers

Recommended Citations

Citations

  • Brenn, W. A. (2017). Stimuli-responsive Materials From Thiol-based Networks [Master's thesis, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case149192088155293

    APA Style (7th edition)

  • Brenn, William. Stimuli-responsive Materials From Thiol-based Networks. 2017. Case Western Reserve University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case149192088155293.

    MLA Style (8th edition)

  • Brenn, William. "Stimuli-responsive Materials From Thiol-based Networks." Master's thesis, Case Western Reserve University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=case149192088155293

    Chicago Manual of Style (17th edition)

case149192088155293
307
© 2017, all rights reserved.
This open access ETD is published by Case Western Reserve University School of Graduate Studies and OhioLINK.