Recent content by justinlee

First, using Isopropyl alcohol as the solvent, I synthesized the copolymer by Methyl methacrylate and Acrylic acid. After copolymerization, at 70 C-degree, the copolymer dissolved into IPA. Afterward, I added ZnO powder into the solution with vigorous agitation. While the system got back to...

I dispersed ZnO particles in AA/IPA mixture which is 50:50 ratio. And, I add 0.1g ZnO into 1g AA and 5g IPA, then did polymerization; but i could get the apparent peaks of ZnO particles in XRD analysis (there is no any peak )! that's weird !

the XRD pattern of Zinc oxide and zinc oxide in acrylic acid ! I did XRD analysis of zinc oxide, and its peaks are at 31.7, 34.4, 36.2, 47.5, 56.6, 62.9 and 67.9 (2-theta degree). further, I did XRD of zinc oxide dispersed in acrylic acid/IPA. but it's weird ! Why I could got some peaks at...