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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