Pengaruh Penambahan Polimer Pati Tapioka Pada Polietilena Densitas Tinggi Terhadap Karakteristik Biodegradable Polymer Blen

Rivai, Ridwan (2022) Pengaruh Penambahan Polimer Pati Tapioka Pada Polietilena Densitas Tinggi Terhadap Karakteristik Biodegradable Polymer Blen. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Telah dibuat biodegradable polymer blend dari polimer pati tapioka dan polietilena densitas tinggi (high density polyethylene, HDPE) sebagai plastik ramah lingkungan. Polimer pati tapioka yang digunakan dibuat sendiri dengan komposisi 7,5 gram pati untuk setiap 100 mL aquades dan 3 mL gliserol. Polimer pati tapioka ditambahkan pada HDPE dengan komposisi 10%, 20%, 30% dan 40% melalui proses ekstrusi injection molding. Hasil karakterisasi menunjukkan bahwa penambahan polimer pati mempengaruhi karakteristik polymer blend yang dihasilkan. Setiap penambahan 10% polimer pati, kekuatan tarik menurun sebesar 4,75 MPa, derajat penggembungan meningkat sebesar 1,76% dan laju degradasi juga meningkat sebesar 0,6 mg/hari. Analisis statistik dengan uji kruskal wallis menunjukkan bahwa sampel biodegradable polymer blend terbaik adalah sampel dengan komposisi polimer pati sebesar 30%. Sampel tersebut memiliki kekuatan tarik sebesar 13,577 MPa, derajat penggembungan sebesar 7,32%, densitas sebesar 0,969 g/cm3 dan laju degradasi sebesar 1,52 mg/hari.
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A biodegradable polymer blend has been made from tapioca starch polymer and high density polyethylene (HDPE) as an environmentally friendly plastic. The tapioca starch polymer used was self-made with a composition of 7,5 grams of starch for every 100 mL of distilled water and 3 mL of glycerol. Tapioca starch polymer is added to HDPE with a composition of 10%, 20%, 30% and 40% through the extrusion injection molding process. The characterization results showed that the addition of starch polymer affected the characteristics of the resulting polymer blend. For every addition of 10% starch polymer, the tensile strength decreased by 4,75 MPa, the degree of swelling increased by 1,76% and the rate of degradation also increased by 0.6 mg/day. Statistical analysis using the Kruskal Wallis test showed that the best biodegradable polymer blend sample was a sample with a starch polymer composition of 30%. The sample has a tensile strength of 13,577 MPa, a degree of swelling of 7,32%, a density of 0,969 g/cm3 and a degradation rate of 1,52 mg/day.

Item Type:	Thesis (Other)
Additional Information:	RSF 620.112 23 Riv p-1 2022
Uncontrolled Keywords:	biodegradable polymer blend, pati tapioka, HDPE, polimer pati, biodegradable polymer blend, tapioca starch, high density polyethyelene, starch polymer
Subjects:	T Technology > TD Environmental technology. Sanitary engineering > TD427.P62 Microplastics--Environmental aspects.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User:	Mr. Marsudiyana -
Date Deposited:	24 Apr 2026 06:55
Last Modified:	24 Apr 2026 06:55
URI:	http://repository.its.ac.id/id/eprint/132911

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