Sains Malaysiana 40(7)(2011): 765–770
Synthesis and Characterization
of a New Heterocyclic Azo Pigment
(Sintesis dan Pencirian Pigmen Azo Heterosiklik Baru)
M. Asniza, A.M. Issam* & H.P.S. Abdul Khalil
School of
Industrial Technology, Universiti Sains Malaysia, 11800 Penang, Malaysia
Diserahkan: 23 Oktober 2009 / Diterima: 28
September 2010
ABSTRACT
A
new heterocyclic coupling agent has been produced from the reaction of maleic anhydride and p-aminophenol, namely
N-(4-hydroxylpheneyl)maleimide.
The coupling agent underwent azo coupling reaction
with aromatic amine, which is p-aminophenol to produce a new heterocyclic azo pigment. The pigment was then subjected to solubility,
hiding power and light fastness test. Fourier Transform Infrared Spectroscopy (FTIR),
Ultraviolet/Visible (UV/Vis) Spectroscopy, and Nuclear
Magnetic Resonance Spectroscopy (1H-NMR, 13C-NMR)
were used to obtain the characteristics and structural features of the pigment.
Keywords:
Aromatic amine; heterocyclic azo pigment; N-(4-hydroxylpheneyl)maleimide
ABSTRAK
Satu agen gandingan heterosiklik baru iaitu, N-(4-hydroxylpheneyl)maleimide telah dihasilkan melalui tindak balas antara malik anhidrida dan p-aminofenol. Agen gandingan tersebut kemudian melalui tindak balas gandingan azo dengan amina aromatik, iaitu p-aminofenol untuk menghasilkan pigmen azo heterosiklik baru. Ujian keterlarutan, keupayaan menutupi warna substrak dan ujian tahan luntur cahaya dilakukan terhadap pigmen. Spektroskopi Inframerah (FTIR), Spektroskopi Ultraungu/Nampak (UV/Vis), dan Spektroskopi Resonans Magnetik Nuklear (1H-NMR, 13C-NMR) digunakan untuk mengenalpasti struktur dan ciri-ciri pigmen.
Kata kunci: Amina aromatik;
N-(4-hydroxylpheneyl)maleimide; pigmen azo heterosiklik
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*Pengarang untuk surat-menyurat; email:
issam@usm.my
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