174 Jurnal Sains Materi Indonesia Vol. 20, No. 4, Juli 2019, hal. 174-178 EFFECT OF CARBON NANOTUBE CONTENT ON THE NATURE OF BIOPLASTIC FROM CASSAVA STARCH Masitoh 1 , Akbar Hanif Dawam Abdullah 2 , Rahmat Firman Septiyanto 1 , Yus Rama Denny Muchtar 1 and Isriyanti Affifah 3 1 Department of Physics Education, FKIP - Sultan Ageng Tirtayasa University Jl. Raya Ciwaru No.25., Serang, Banten 42121 2 Research Unit for Clean Technology - Indonesian Institute of Sciences Jl. Cisitu Sangkuriang Bandung, West Java 40135 3 Department of Chemistry Education, FKIP - Sultan Ageng Tirtayasa University Jl. Raya Ciwaru No.25., Serang, Banten 42121 E-mail: arim.masitoh14@gmail.com Received: 4 April 2019 Revised: 24 June 2019 Accepted: 27 June 2019 ABSTRACT EFFECT OF CARBON NANOTUBE CONTENT ON THE NATURE OF BIOPLASTIC FROM CASSAVA STARCH. Bioplastic is a starch-based plastic that is easily degraded by microorganisms, so it can be used as an alternative to conventional plastics. In this research, the process of making bioplastic is made from starch cassava using glycerol as a plasticizer and used CNT type MWCNTs (Multi-Wall CNTs) as an amplifier with variations in composition 0%, 1%, 2%, and 3%. Bioplastics are made by dry blending method with pre-mixing, mixing, hot press and cold press. Bioplastics characteristics of starch/CNT include strong tensile, biodegradation and morphology. The test results showed that the addition of CNT composition affects bioplastic mechanical properties. The optimum tensile value of drag occurs in the addition of a 2% CNT of 13.52 MPa. Biodegradable test result use of Aspergillus Niger mushroom to prove bioplastic starch/CNT can be degraded well. The morphological characteristics result in the form of SEM results suggests that the bioplastic starch/CNT 3% have cracks and result in a strong tensile decline. FTIR test results showed a new function group C a” C due to the addition of CNT. Keywords: Bioplastic, Cassava starch, Glycerol, CNT, Physical properties ABSTRAK PENGARUH KANDUNGAN NANOTUBE KARBON PADA SIFAT BIOPLASTIK DARI PATI SINGKONG. Bioplastik merupakan plastik berbahan dasar pati yang mudah terdegradasi oleh mikroorganisme, sehingga dapat dijadikan sebagai alternatif penggunaan plastik konvensional. Pada Penelitian ini dilakukan proses pembuatan bioplastik berbahan dasar pati singkong dengan menggunakan gliserol sebagai plasticizer dan digunakan CNT jenis MWCNTs (Multi-Wall CNTs) sebagai penguat dengan variasi komposisi 0%, 1%, 2%, dan 3%. Bioplastik dibuat dengan metode kering (dry blending) dengan tahapan pre-mixing, mixing, hot press, dan cold press. Karakteristik bioplastik pati/CNT meliputi kuat tarik, biodegradasi dan morfologi. Hasil pengujian menunjukkan bahwa penambahan komposisi CNT mempengaruhi sifat mekanik bioplastik. Nilai optimum kuat tarik terjadi pada penambahan CNT 2% sebesar 13,52 MPa. Hasil uji biodegradable menggunakan jamur Aspergillus niger membuktikan bioplastik pati/CNT dapat terdegradasi dengan baik. Hasil karakteristik morfologi berupa hasil SEM menunjukkan bahwa bioplastik pati/CNT 3% memiliki retakan dan mengakibatkan kuat tarik menurun. Hasil uji FTIR menunjukkan adanya gugus fungsi baru Ca”C karena adanya penambahan CNT. Kata kunci: Bioplastik, Pati singkong, Gliserol, CNT, Sifat fisik Akreditation No : 21/E/KPT/2018 Date 9 July 2018 ISSN 1411-1098 E-ISSN 2614-087X