Pustaka Ilmiah Universitas Padjadjaran

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Immobilisasi Mikrokapsul Minyak Jeruk Nipis Immobilization Of Lime Oil (Citrus Aurantifolia) Microcapsules On Cotton Fabric

Pada penelitian ini telah dipelajari sintesis mikrokapsul minyak jeruk nipis (Citrus aurantifolia) dan immobilisasinya pada sampel kain kapas. Sintesis mikrokapsul dilakukan dengan metode polimerisasi in-situ menggunakan bahan kulit (shell) melamin formaldehid. Immobilisasi mikrokapsul pada kain kapas dilakukan dengan metode pad-dry dengan menggunakan binderpoliakrilat dan crosslinking agent N-methylol dihydroxyethylene urea. Sebagai bahan pembanding,metode immobilisasi yang sama dilakukan pula pada mikrokapsul minyak jeruk nipis berbasis kulit etil selulosa. Hasil penelitian menunjukkan bahwa mikrokapsul hasil sintesis terkarakterisasi mempunyai bentuk sperik dengan ukuran partikel 0,44 – 2,10 µm. Immobilisasi mikrokapsul berbasis melamin formaldehid memperlihatkan hasil optimum menggunakan binder poliakrilat, sedangkan mikrokapsul berbasis etilselulosa memperlihatkan hasil optimummenggunakan crosslinking agent N-methylol dihydroxyethylene urea.Kedua sampel kain dengan teknik immobilisasi optimummemperlihatkan ketahanan terhadap pencucian cukup baik hingga setara 5 kali pencucian rumah tangga.

In this research, synthesis of lime oil (Citrus aurantifolia) microcapsule and its immobilization on cotton sample were studied. The method of microencapsulation that used was in-situ polymerization using melamine formaldehyde as shell material. Immobilization of microcapsules on cotton fabrics was carried out by pad-dry methodusing polyacrylate as binder andN-methylol dihydroxyethylene urea as a crosslinking agent. As a comparative, similar immobilization method was also studied for lime oil microcapsule based on ethyl cellulose shell. The results showed that the characteristic of melamine formaldehid microcapsules has a spherical shape with a particle size of 0.44 – 2.10 µm. Immobilization of the melamineformaldehyde based microcapsules showthe optimized results using polyacrylate as binder, whereas the ethylcellulose based microcapsules show the optimized results using N-methylol dihydroxyethylene urea as crosslinking agent. Both of fabric sampleswith optimized immobilization techniques show good fastness against washing equal up to 5 times household washing.