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Assembly and Characterization of Polyurethane–Gold Nanoparticle Conjugates
Author(s) -
Romaskevic Tatjana,
Sedlevicius Modestas,
Budriene Saulute,
Ramanavicius Arunas,
Ryskevic Natalija,
Miasojedovas Saulius,
Ramanaviciene Almira
Publication year - 2011
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201100390
Subject(s) - polyurethane , conjugate , nanoparticle , vinyl alcohol , polymer chemistry , materials science , chemistry , nuclear chemistry , polymer , chemical engineering , nanotechnology , organic chemistry , mathematical analysis , mathematics , engineering
The PU/Au‐NPs conjugates based on poly(vinyl alcohol)‐containing polyurethane microparticles coated with Au‐NPs are prepared by a heat‐treated method. The PU/Au‐NPs conjugates are characterized by FT‐IR , SEM, TEM analysis. The appearance of characteristic peaks in the FT‐IR spectra at 1574 and 1624 cm −1 , which are attributed to urethane groups, are presented for both PU and PU/Au‐NPs conjugate. The absorption band at 1716–1718 cm −1 , attributed to the hydrogen‐bonded urethane carbonyl groups of PU/Au‐NPs (13nm) ‐A is higher than that obtained for unmodified PU. The Au‐NPs (13nm) are found to be well dispersed in the PU. The Au‐NPs (3.5nm) tend toward agglomeration when they are entrapped within PU. It is determined, that Au‐NPs present in PU‐Au conjugates quench the luminescence of PU.