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Thesis-Wei Xie.pdf (1.07 MB)

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Understanding the impact of chain alignment on mechanochemical activation

Xie, Wei
http://rave.ohiolink.edu/etdc/view?acc_num=akron1619285242977195

Abstract Details

2021, Master of Science, University of Akron, Polymer Science.
Bulk activation of mechanophores embedded in polymers has been an important challenge in the field of polymer mechanochemistry, being limited to a small number of mechanophores which require low forces to activate. It has been shown before that alignment of polymer chains in these systems may correlate to enhanced activation. We hypothesized that mechanophore incorporated liquid crystalline elastomer systems may exhibit enhanced mechanochemical activation as a result of the highly aligned microstructure of these materials, and aid in expanding the scope of mechanophores applicable to bulk activation. Spiropyran (SP), a mechanophore that undergoes a reversible color change in presence of force, was embedded to a series of liquid crystalline elastomers (LCEs) and non-liquid crystal elastomers. Contrary to our expectations, we observed that SP embedded in the LCE systems showed no activation whereas some activation was visible in the SP-containing non-liquid crystal elastomers. This behavior suggests that the mesogen may have some negative impact on mechanochemical activation. Further investigation is undergoing to explore the how mesogen affects the mechanochemical activation.
Junpeng Wang (Advisor)
Yu Zhu (Committee Member)
46 p.
Polymer Chemistry; Polymers
Mechanochemistry LCE Alignment

Recommended Citations

Citations

  • Xie, W. (2021). Understanding the impact of chain alignment on mechanochemical activation [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1619285242977195

    APA Style (7th edition)

  • Xie, Wei. Understanding the impact of chain alignment on mechanochemical activation. 2021. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1619285242977195.

    MLA Style (8th edition)

  • Xie, Wei. "Understanding the impact of chain alignment on mechanochemical activation." Master's thesis, University of Akron, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=akron1619285242977195

    Chicago Manual of Style (17th edition)

akron1619285242977195
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This open access ETD is published by University of Akron and OhioLINK.