Sains Malaysiana
37(4): 373-376(2008)
Molecularly Imprinted Polymer for Recognition of
p-Xylene in Organic Medium
(Polimer Bercetak Molekul untuk Pengecaman p-Xilena
dalam Medium Organik)
Norlaili Abu Bakar, Musa Ahmad & Rusli Daik
School of Chemical Sciences and Food Technology
Faculty of Science and Technology, Universiti Kebangsaan
Malaysia
43600 UKM Bangi, Selangor
Malaysia
Received: 11 June 2007 / Accepted: 12 December 2007
ABSTRACT
Molecularly
imprinted polymer (MIP) based on acrylate monomer was prepared
at 80°C for 5 hours using p-xylene and ethylene glycol dimethacrylate
(EGDMA) as a template and crosslinking agent respectively. The
polymer obtained was washed with a mixture of acetic acid and
methanol (1:4) and dried in the vacuum oven at 80°C. FTIR spectrum showed that all the templates were leached out from polymer
during excessive washing and drying stage. The rebinding test
result showed that the MIP was bonded with the analyte in the
presence of organic solvents as shown by FTIR spectroscopy. The
SEM micrograph showed that non-imprinted polymer (NIP) had no
cavity as compared to MIP.
Keywords:
Acrylate; FTIR; organic solvent; molecularly imprinted polymer;
p-xylene
ABSTRAK
Polimer
bercetak molekul berasaskan monomer akrilat disediakan pada suhu
80°C selama 5 jam dengan menggunakan p-xilena dan etilena glikol dimetakrilat
(EGDMA) masing-masing sebagai templat dan agen taut silang. Polimer
yang diperolehi dibasuh dengan campuran asid asetik dan metanol
(1:4) dan dikeringkan dalam oven vakum pada suhu 80°C. Spektrum FTIR menunjukkan
semua templat telah terkeluar semasa peringkat pembasuhan
dan pengeringan. Ujian pengikatan semula menunjukkan MIP dapat
mengikat analit dengan kehadiran pelarut organik seperti ditunjukkan
oleh spektroskopi inframerah. Mikrograf SEM menunjukkan bahawa
polimer tidak bercetak molekul (NIP) tidak mempunyai liang kaviti
berbanding dengan MIP.
Kata
kunci: Akrilat; FTIR; pelarut organik; polimer bercetak molekul;
p-xilena
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