Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (10): 2485-2492.doi: 10.3866/PKU.WHXB20111020

• PHYSICAL CHEMISTRY OF MATERIALS • Previous Articles     Next Articles

Ag-P(AM-co-MAA) Composite Microspheres Based on Morphology Transcription Method

XIA Hui-Yun1, ZHANG Ying2, GAO Li-Ning1, YAN Lu-Ke1   

  1. 1. Engineering Research Center of Transportation Materials, Ministry of Education, Schol of Materials Science and Engineering, Chang'an University, Xi?an 710061, P. R. China;
    2. Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062, P. R. China
  • Received:2011-06-07 Revised:2011-07-07 Published:2011-09-27
  • Contact: XIA Hui-Yun
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20903015), Special Fund for Basic Scientific Research of Central Colleges, China (CHD2009JC147, CHD2009JC132) and Basic Research Support Program, Chang'an University, China

Abstract: Ag3PO4-P(AM-co-MAA) composite microspheres were prepared by the combination of a polymeric microgel method and a reverse micelle technique. Novel silver-poly(acrylamide-co-methacrylic acid) [Ag-P(AM-co-MAA)] composite microspheres with sizes ranging in the tens of micrometers and containing a patterned surface as well as core/shell structures were prepared by the chemical reduction of Ag3PO4-P(AM-co-MAA) composite microspheres in ethanol. Energy dispersive X-ray (EDX) analysis revealed that the chemical composition of the"shell"is dominated by Ag, but the"core"is dominated by the template, P(AM-co-MAA). Scanning electron microscopy (SEM) results demonstrate that the surface morphology of the Ag-polymer composite microspheres is similar to that of their precursors and can be controlled to a certain extent by varying the composition of the template copolymer, the approaches and the amount of Ag3PO4 deposited. X-ray diffraction (XRD) indicated that the salt had been completely converted to Ag. Biological antimicrobial experiments showed that this kind of composites exhibit distinctive antibacterial activity toward Escherichia coli and Staphylococcus aureus.

Key words: Silver, Silver phosphate, Composite microspheres, Morphology transcription, Core-shell structure, Antibacterial


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