Dalam kertas kerja ini, kesan-kesan menukar nisbah templat:pemaut silang:monomer kepada sintesis polimer telah dikaji. Polimer-polimer telah disediakan dalam keadaan pempolimeran yang optimum. Dalam bahagian pertama eksperimen, nisbah monomer telah dikawal sementara nisbah templat:pemaut silang kekal malar. Bahagian kedua eksperimen ini pula melibatkan penukaran nisbah pemaut silang sementara nisbah templat:monomer kekal malar. Atrazin telah digunakan sebagai molekul templat, EGDMA sebagai ejen pemaut silang, MAA sebagai monomer berfungsi, AIBN sebagai ejen pemula tindak balas dan toluene sebagai porogen. Polimer-polimer yang telah disintesis dikaji menggunakan sistem HPLC untuk mengira kapasiti penjerapan. Morfologi polimer-polimer tersebut pula dikaji dengan menggunakan sistem imbasan electron mikroskop dan FTIR. Kesimpulannya, kapasiti penjerapan MIP berkurang apabila kuantiti MAA meningkat. Kapasiti penjerapan yang tertinggi dalam eksperimen ini ialah 18.22 μmol atrazine/g MIP.
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In this paper, the effect of change in template:cross-linker:monomer ratio on the synthesis of molecularly imprinted polymers is discussed. Polymers were prepared under optimized polymerization conditions by controlling the monomer ratio while maintaining the same template:cross-linker ratio in the first part of experiment. The second part involved controlling the cross-linker ratio while keeping the template:monomer ratio constant. Atrazine was used as the template molecule, EGDMA as the cross-linking agent, MAA as the functional monomer, AIBN as the initiator and toluene as the porogen. The synthesized polymers were characterized by HPLC analysis for their binding capacities. The morphology of the polymers was studied using SEM and FTIR analysis. It was concluded that binding capacity of MIP decreases as the volume of MAA increases. The highest binding capacity observed was 18.22 μmol atrazine/g MIP by MIP1 which had 16.9576 μL of MAA. On the other hand, the binding capacity of MIP increased at the start with the growth in the amount of crosslinking agent and decreased after reaching a maximum value of 14.76 μmol atrazine/g MIP.
Molecularly imprinted polymer for analysis of atrazine pesticide / Selventhiran Dasarataan