Promosi Doktor Chandra Liza

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Kamis (16/01), Chandra Liza resmi menjadi doktor dari Program Studi Ilmu Bahan-Bahan Program Pascasarjana Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia (FMIPA UI). Ia terhitung sebagai doktor ke-42 yang lulus dari program studi ini sekaligus doktor ke-94 yang lulus dari Program Pascasarjana FMIPA UI.

Bertempat di Gedung C Bank Syariah Mandiri FMIPA UI, Chandra Liza menjalani sidang terbuka yang dipimpin oleh Dekan FMIPA UI, Dr. rer.nat. Abdul Haris. Sidang ini diikuti pula oleh 4 orang tim penguji yang terdiri atas Dr. Muhammad Hikam, Dr. Budhy Kurniawan, Dr. Yuni Kriyuningsih Krisnadi, dan Dr. I Nyoman Jujur, M.Eng. Chandra Liza didampingi oleh promotor Dr. Bamabang Soegijono, M.Si. dan kopromotor Dr. Emil Budianto.

Pada disertasinya yang berjudul “Treatment Lapisan Organo Silika dengan Media Plasticizer Cassava Stratch untuk Preparasi Kemasan Nanokomposit Degradabel LLDPE-Cassava Stratch”,Chandra Liza mencoba memberi alternatif solusi atas kerusakan lingkungan akibat keberadaan plastik yang tidak bisa didaur ulang. Plastik konvensional dengan bahan polimer yang lazim dipakai harus diganti dengan plastik yang terbuat dari bahan-bahan yang degradabel (dapat didaur ulang).

Salah satu bahan polimer yang degradabel adalah pati. Pati bisa didapat dari produk pertanian seperti jagung, singkong, kentang, dan beras. Selain pasokannya yang berlimbah dan biaya yang tidak terlampau tinggi, pati mempunyai keunggulan, yakni mudahnya zat ini untuk dilakukan modifikasi kimia. Untuk membuat degradabel nanokomposit polimer– cassava starch, digunakan metoda melt compoundingyang terdiri atas tiga tahap, yaitu pengolahan lapisan organo silika, pembuatan masterbatch dan kompon, hingga pembuatan kemasan dan karakaterisasi degradasi.

Manfaat yang didapat dari penelitian ini adalah untuk mengantisipasi penggunaan kemasan plastik sintetis terutama kemasan sekali pakai yang semakin meningkat. Atas disertasinya ini, Chandra Liza berhasil lulus dengan yudisium sangat memuaskan. (IRH)

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