2. Experimental
2.1. Materials
A commercially
plain weave) was used. Mangrove bark (Rhizophora apiculata Blume) was supplied from a charcoal factory in Samutsongkhram province, Thailand. Four different laboratory grade mordants were used, i.e. aluminum potassium sulfate (AlK(SO4 )2 ·12H2 O), ferrous sulfate (FeSO4 ·7H2 O), copper sulfate (CuSO4 ·5H2 O),
scoured and
bleached silk
fabric
(75.2 g m−2 ,