1. Polimer : Polibutadien block polietilenoksida
Judul Jurnal : Determination of critical micelle concentration of
polybutadiene-block-poly(ethyleneoxide) diblock copolymer
by fluorescence spectroscopy and dynamic light scattering
Oleh : Elyn Novta R
Dosen Pengampu : Wiwit, M. Si
3. Polibutadien block polietilenoksida dalam
Jurnal
In study of Determination of critical micelle concentration of polybutadiene-
block-poly(ethyleneoxide) diblock copolymer by fluorescence spectroscopy
and dynamic light scattering, critical micelle concentration (cmc)was
determined for polybutadiene-block-poly(ethyleneoxide), PB(1800)-b-
PEO(4000) amphiphilic diblock copolymer in aqueous media by fluorescence
spectroscopy and dynamic light scattering (DLS) techniques. The
fluorescence measurements were performed by using pyrene as a
probemolecule in order to determine the cmc while the intensity of the
scattered light from solutions was analyzed with the DLS technique. The cmc
values determined by these two techniques for PB(1800)-b-PEO(4000)
copolymer in aqueous solution at 25 °C were 3±1×10−7 and 6±2×10−7 mol/L,
respectively. The results showed that DLS is as sensitive as fluorescence
spectroscopy in determining the cmc of a copolymer, and that it is also capable
of the simultaneous determination of cmc and hydrodynamic diameter of
micelles in a copolymer micellar solution.
