Cellulose nanocrystal(CNC)prepared by hydrolysis of cotton linters with sulfuric acid was used to react with chloroauric acid to manufacture a gold nanoparticle/CNC composite.The composite was then graft-copolymerized...Cellulose nanocrystal(CNC)prepared by hydrolysis of cotton linters with sulfuric acid was used to react with chloroauric acid to manufacture a gold nanoparticle/CNC composite.The composite was then graft-copolymerized with N-isopropylacrylamide to obtain a photo-thermal ultrafine gold nanoparticles/CNC-based hydrogel.The hydrogel was studied by performing scanning electron microscopy,and it was found that the prepared hydrogel had a network structure.The temperature of the hydrogel increased from 25℃to 39℃and its volume decreased by 30%when it was exposed to visible light(400~750 nm)for 1 h.The experiment results indicated that the prepared photo-thermal CNC-based hydrogel has thermal responsiveness and photo-thermal properties.展开更多
基金funded by the National Natural Science Foundation of China(31570569)
文摘Cellulose nanocrystal(CNC)prepared by hydrolysis of cotton linters with sulfuric acid was used to react with chloroauric acid to manufacture a gold nanoparticle/CNC composite.The composite was then graft-copolymerized with N-isopropylacrylamide to obtain a photo-thermal ultrafine gold nanoparticles/CNC-based hydrogel.The hydrogel was studied by performing scanning electron microscopy,and it was found that the prepared hydrogel had a network structure.The temperature of the hydrogel increased from 25℃to 39℃and its volume decreased by 30%when it was exposed to visible light(400~750 nm)for 1 h.The experiment results indicated that the prepared photo-thermal CNC-based hydrogel has thermal responsiveness and photo-thermal properties.
