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Journals / Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi / 2018 / Cilt: 18 - Sayı: 1

The Effect of Polymer Type on the Thermal Stability and Mechanical Behavior of Blue Phase Cholesteric Liquid Crystal

Mavi Faz Kolesterik Sıvı Kristalinin Termal Kararlılığı ve Mekanik Davranışları Üzerine Polimer Çeşitliliğinin Etkisi

Enver ATİK
Can ÇİVİ
Emine KEMİKLİOĞLU
Pages
403–411
Publication Date
2022-10-12
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

It has been observed that the thermal and mechanical stabilities of the samples changed as a function of the polymer used.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this study, blue phase liquid crystal mixtures were formulated as a first step.
📊
Key Findings & Data:These specimens were polymerized via UV (ultraviolet) light after the polymers with different functionality at the different concentrations were added into the blue phase liquid crystals mixtures.
💡
Conclusion & Impact:It has been observed that the thermal and mechanical stabilities of the samples changed as a function of the polymer used.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

In this study, blue phase liquid crystal mixtures were formulated as a first step. These specimens were polymerized via UV (ultraviolet) light after the polymers with different functionality at the different concentrations were added into the blue phase liquid crystals mixtures. Polymerization conditions have been optimized since the intensity of the UV light is very important in completing the polymerization. The thermal stability and mechanical behavior of the polymerized samples were investigated. It has been observed that the thermal and mechanical stabilities of the samples changed as a function of the polymer used.

Özet

Bu çalışma kapsamında, ilk olarak, mavi faz kolesterik sıvı kristal örnekleri hazırlanmıştır. Hazırlanan bu numuneler içerisine farklı konsantrasyonlarda ve farklı kimyasal yapılardaki çeşitli polimerler eklenerek UV (ultraviyole) ışık altında polimerizasyonları yapılmıştır. UV ışığının yoğunluğu, polimerizasyon süresi polimerizasyonun tamamlanması açısından oldukça önemli olduğu için polimerzasyon koşulları optimize edilmiştir. Polimerizasyonları tamamlanan numunelerin termal kararlılıkları, mekanik davranışları incelenmiştir. Polimerizasyon sonucunda incelenen numunelerde termal kararlılığın ve mekanik dayanıklılığın, kullanılan polimerin bir fonksiyonu olarak değiştiği görülmüştür.

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Cite This Article

ATİK, E., ÇİVİ, C., KEMİKLİOĞLU, E. (2022). The Effect of Polymer Type on the Thermal Stability and Mechanical Behavior of Blue Phase Cholesteric Liquid Crystal. Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi, Cilt: 18 - Sayı: 1, 403–411. https://ajindex.com/articles/429932

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References (11)

  1. Kitzerow H.-S., 2009. In Blue phase come of age: a review. L.-C. Chien and M.-H. W.,(Editörler), Proceedings of SPIE Emerging Liquid Crystal Technologies, 7232, 723205. Coles HJ, and Pivnenko MN., 2005. Liquid crystal blue phases with a wide temperature range. Nature, 436, 9971000. Choi H., Higuchi H, Ogawa Y., and Kikuchi H., 2012. Polymer-stabilized supercooled blue phase. Appl. Phys. Lett., 101, 131904.
  2. Kikuchi H, Yokota M, Hisakado Y, Yang H, and Kajiyama T., 2002. Polymer-stabilized liquid crystal blue phases. Nat. Mater., 1, 64-72.
  3. Suda M., Kameyama N., Suzuki M., Kawamura N., Einaga Y., 2007. Reversible Phototuning of Ferromagnetism at Au–S Interfaces at Room Temperature. Angew. Chem. Int. Ed., 47, 160–163.
  4. Gerber, P. R., 1985. Electro-optical effects of a small-pitch blue phase system. Mol. Cryst. Liq.Cryst. 116, 197-206.
  5. Hisakado Y, Kikuchi H, and Nagamura T., 2005. Large electro-optic kerr effect in polymer-stabilized liquidcrystalline blue phases. Adv. Mater., 17, 96-98.
  6. Hussain Z, Masutani A, Danner D, Pleis F, Hollfelder N, Nelles G, and Kilickiran P., 2011. Ultra fast polymer network blue phase liquid crystals. J. Appl. Phys., 109, 114513-4. Hikmet R. A. M., 1990. Electrically induced light scattering from anisotropic gels. J. Appl. Phys., 68, 4406-4412.
  7. Kemiklioglu E., Hwang J.-Y. and Chien L.-C., 2014. Stabilization of Cholesteric Blue Phases Using Polymerized Nanoparticles. Physical Review E, 89, 042502. Kemiklioglu E., Chien L.C., Haseba Yasuhiro, 2014. Polymer Effect on Polymer-Stabilized Blue Phase Liquid Crystals. SID Symposium digest of technical papers, 45 (1). Iwata T., Suzuki K., Amaya N., Higuchi H., Masunaga H. Sasaki S., and Kikuchi H., 2009. Control of cross-linking polymerization kinetics and polymer aggregated structure in polymer-stabilized liquid crystalline blue phases. Macromolecules, 42, 2002-2008.
  8. Kikuchi H., Hisakado Y., Uchida K., Nagamura T., Kajiyama T., 2004. Fast electro-optical effect in polymer-stabilized blue phases. Proceedings of SPIE, 5518, 182-190.
  9. Gardiner D. J., Morris S. P., Castles F., Qasim M. M., Kim W. S., Choi S. S., Park H. J., Chung I. J., Coles H. J., 2011. Polymer stabilized chiral nematic liquid crystals for fast switching and high contrast electro-optic devices. Appl. Phys. Lett. 98, 263508-3.
  10. Gandhi S. S., Chien L.C., 2017. Unraveling the Mystery of the Blue Fog: Structure, Properties, and Applications of Amorphous Blue Phase III. Adv. Mater, 29, 1704296-13.
  11. Martinez-Gonzalez J. A., Li X., S