Formation of Polydiacetylene/Silica Nanocomposite as a Colorimetric Indicator: Effect of Time and Temperature. Issue 1 (25th September 2012)

• Record Type: Journal Article
• Authors: Nopwinyuwong, A.; Boonsupthip, W.; Pechyen, C.; Suppakul, P.
• Is Part Of: Advances in polymer technology. Volume 32:Issue 1(2013:Spring)
• Page Start: E724
• Page End: E731
• Publication Date: 2012-09-25
• Subjects: Plastics -- Periodicals; Polymers -- Periodicals; 668.9
• DOI: 10.1002/adv.21315
• Languages: English
• ISSNs: 0730-6679

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>This work presents a method to prepare a new class of polydiacetylene (PDA)/SiO₂ nanocomposites for colorimetric indicator applications. The silica concentration is 5 wt% of the diacetylene monomer, 10, 12‐pentacosadiynoic acid (PCDA). Under ultraviolet light irradiation, PCDA vesicle/silica nanocomposites were formed and an intense blue solution was obtained. The silica nanoparticles can improve chromic properties of molecules. The color transition of PDA/silica nanocomposites can change from blue (λ_max∼ 640 nm) to red (λ_max∼ 540 nm), which is irreversible when stored at different temperatures and time. This study investigated characterization of the aqueous suspension compared with pure PDA vesicles in the absorption spectra. Moreover, the color response was calculated. This is an efficient method for preparation of the colorimetric sensor of nanocomposite materials after UV irradiation. The PDA/5 wt% silica nanocomposites aqueous matrix would potentially be developed as a new colorimetric polymeric indicator to study the effect of temperature and time. © 2012 Wiley Periodicals, Inc. Adv Polym Techn 32: E724–E731, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/adv.21315</p> </abstract>