Stimuli-responsive cellulose modified by epoxy-functionalized polymer nanoparticles with photochromic and solvatochromic properties.
Photoresponsive papers are among the fast and simple tools for detection of polarity by solvatochromic and photochromic behaviors upon UV irradiation. Here, a new, green and facile modification strategy was employed to prepare novel stimuli-responsive cellulose materials containing spiropyran by mixing microcrystalline cellulose (MCC), as a model compound, with epoxy-functionalized photochromic latex. FTIR analysis, thermal and thermo-mechanical properties were used to confirm the microstructral properties. Crystallographic analysis revealed a decrease in crystallinity of cellulose matrix and approved the incorporation of photochromic copolymer. Then stimuli-responsive papers were prepared by using pulp paper as the cellulosic matrix and their smart characteristics were studied under UV irradiation while dried or immersed into some polar and non-polar solvents. Different color changes were observed and investigated by solid-state UV-vis spectroscopy. These significant results were attributed to the efficient chemical modification and confirmed by SEM, EDX and nitrogen mapping analyses.
Polymer Science Department, Iran Polymer & Petrochemical Institute, P.O. Box 14965/115, Tehran, Iran.
Amin
A
Abdollahi
Polymer Science Department, Iran Polymer & Petrochemical Institute, P.O. Box 14965/115, Tehran, Iran.
Jaber Keyvan
JK
Rad
Polymer Science Department, Iran Polymer & Petrochemical Institute, P.O. Box 14965/115, Tehran, Iran. Electronic address: a.mahdavian@ippi.ac.ir.
Ali Reza
AR
Mahdavian
D002236:Carbohydrate Conformation; D002482:Cellulose / Q000737:chemistry*; D004852:Epoxy Compounds / Q000737:chemistry*; D055772:Green Chemistry Technology; D055595:Mechanical Phenomena; D008958:Models, Molecular; D053758:Nanoparticles / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry*; D013696:Temperature; D014466:Ultraviolet Rays
D004852:Epoxy Compounds; D012997:Solvents; D002482:Cellulose; C109691:microcrystalline cellulose
Cellulose; Nanoparticle; Photochromic; Solvatochromic; Spiropyran; Stimuli-responsive