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Object Dependent Properties of Multicomponent Acrylic Systems

Kidd, Ian V.

Abstract Details

2014, Master of Sciences (Engineering), Case Western Reserve University, Materials Science and Engineering.
Degradation of multi-component acrylic systems is becoming increasingly important as polymers and complex systems become commonplace in technological applications. For outdoor applications, understanding the interactions between each stressor and the optical, chemical, and mechanical response is important. This study focuses mainly on the magnitude and variance of optical and chemical properties of hardcoat acrylics on PET (Polyethylene terephthalate) or TPU (thermoplastic polyurethane) substrates, using big-data and unbiased statistics and analytics. PET shows a strong tendency to yellow and haze in accelerated and real-world exposures. A 0.90 correlation coefficient exists between yellowness and UVA-340 irradiance. A 0.8 correlation coefficient exists between haze and UVA-340 irradiance, but moisture must be present for hazing to occur. In TPU films, yellowing occurs until 200 MJ/m2 of UVA-340 irradiance, after which the films clear. Meanwhile, hardcoat acrylics with a TPU substrate are highly resistant to haze in all exposures studied. As optical degradation occurs up to 4000 hours of exposure, little correlation to carbonyl, C-H stretch, or N-H stretch area exists. A weak correlation is observed between increasing optical degradation and spectral attenuation, possibly indicating a complete breakdown of the polymers. Development of a model that relates observable degradation to surface and bulk phenomena can give insights into how to reduce degradation. All of this data must be used to focus the direction of R&D efforts to increase the useful lifetime of multi-component acrylic systems.
Roger French (Advisor)
James McGuffin-Cawley (Committee Member)
Timothy Peshek (Committee Member)
Laura Bruckman (Other)
Olivier Rosseler (Other)
219 p.

Recommended Citations

Citations

  • Kidd, I. V. (2014). Object Dependent Properties of Multicomponent Acrylic Systems [Master's thesis, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1404912862

    APA Style (7th edition)

  • Kidd, Ian. Object Dependent Properties of Multicomponent Acrylic Systems. 2014. Case Western Reserve University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case1404912862.

    MLA Style (8th edition)

  • Kidd, Ian. "Object Dependent Properties of Multicomponent Acrylic Systems." Master's thesis, Case Western Reserve University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1404912862

    Chicago Manual of Style (17th edition)