A kind of thermo-sensitive macromonomer, styrene-terminated poly(N-isopropylacrylamide-butyl acrylate) [P(NIPAm-BA)] has been synthesized in this work. With the help of ultraviolet spectrum (UV), proton nuclear magnet...
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UV-curable Resin/ZnO composite film, which has advantages including UV-curable property and pH buffering ability, was prepared through incorporation of pre-made ZnO nanoparticles and UV-curable resin. The resins we us...
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UV-curable Resin/ZnO composite film, which has advantages including UV-curable property and pH buffering ability, was prepared through incorporation of pre-made ZnO nanoparticles and UV-curable resin. The resins we used in this paper were R1 and R10. R1 was Bisphenol A epoxy diacrylate (EA) dissolved in propylene glycol monomethyl ether acetate (PGMEA), and R10 was synthesized by EA, pyromellitic dianhydride (PMDA) and 2-hydroxyethyl methacrylate (HEMA), and then followed by characterization using FTIR and GPC. The ZnO nanoparticles were prepared from Zinc acetate and Sodium hydroxide in 1-butanol by hydrothermal method. "Physical Adsorption" and "Mixture Coating" were two ways to prepare the Resin/ZnO composite film. Then, the pH buffering ability of the Resin/ZnO composite film was evaluated by soaking the film in the pH4 or pH10 solution, and the variation of pH value was recorded with time. The result shows that F10/ZnO composite film obtained from R10/ZnO by "Physical Adsorption" method could be a good buffering material to justify either pH4 or pH10 solution to pH7.4 in 5 min and F10/ZnO composite film by "Mixture Coating" method could be a long time pH buffering material.
Functionalized PS/SiO_2 composite nanoparticles bearing sulfonic groups on the surface were successfully synthesized via emulsion copolymerization using a polymerizable emulsifierαolefin solfonate(AOS).As demonstrate...
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Functionalized PS/SiO_2 composite nanoparticles bearing sulfonic groups on the surface were successfully synthesized via emulsion copolymerization using a polymerizable emulsifierαolefin solfonate(AOS).As demonstrated by transmission electron microscopy and atomic force microscopy,well-defined core-shell PS/SiO_2 composite nanoparticles with a diameter of 50 nm were *** groups introduced onto the surface of the composite nanoparticles were quantified by FTIR,and can be controlled to some exten...
Biopolymer chitosan was used to modify the mechanical properties of soluble eggshell membrane protein (SEP) films. The SEP/chitosan blend films were prepared by solution casting from 10% aqueous acetic acid. Tensile s...
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Biopolymer chitosan was used to modify the mechanical properties of soluble eggshell membrane protein (SEP) films. The SEP/chitosan blend films were prepared by solution casting from 10% aqueous acetic acid. Tensile strength and elongation at break of the blend films increased with increasing amount of chitosan. Microphase separation was observed by field emission scanning electron microscopy, although interaction between the two components was revealed by FTIR. The biocompatibility of SEP/chitosan blend films containing 10%-50% of chitosan, as demonstrated by cell culture of NIH3T3, was much better than that of pure chitosan.
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