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International Journal of Polymer Science
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International Journal of Polymer Science
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2013
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Article
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Fig 3
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Research Article
Polyurethane-Keratin Membranes: Structural Changes by Isocyanate and pH, and the Repercussion on Cr(VI) Removal
Figure 3
SEM images of PU-keratin membranes; ((a)–(d)) with TDI; ((e)–(h)) with MDI.
(a)
TPH
(b)
TPKN
(c)
TPKAc
(d)
TPKAl
(e)
MPH
(f)
MPKN
(g)
MPKAc
(h)
MPKAl