Irianto, Shandy Raphael and Mokhamad Nur,, STP, M.Sc, Ph.D and Putri Wullandari,, STP, M.Sc (2022) Pengaruh Formulasi Alginat dan Carboxymethyl Cellulose (CMC) terhadap Karakteristik Sifat Mekanik dan Biodegradabilitas Film Bioplastik yang Dibuat dengan Metode Ekstrusi. Sarjana thesis, Universitas Brawijaya.
Abstract
Bioplastik merupakan salah satu material pengganti plastik komersial yang tebuat dari bahan terbarukan dan mudah terdegradasi. Proses pembuatan dan karakterisasi film bioplastik berbahan Na-alginat dan CMC dengan penambahan gliserol sebagai plasticizer telah dilakukan. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penambahan CMC sebagai filler terhadap karakteristik film bioplastik berbasis Na-alginat. Film bioplastik dibuat dengan proses pencampuran menggunakan metode ekstrusi. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan empat perlakuan dan lima ulangan. Film bioplastik dibuat dari campuran Na-alginat - CMC dengan variasi proporsi 35 : 35; 40 : 30; 45 : 25; dan 50 : 20 % (b/b) serta plasticizer gliserol 30 % (b/b). Film bioplastik yang telah dibuat, kemudian di analisa dengan uji mekanik (kuat tarik dan elongasi), pengukuran ketebalan, uji daya serap air, dan analisa gugus fungsi dengan FTIR. Hasil penelitian menunjukkan adanya kenaikan proporsi CMC secara nyata dapat meningkatkan nilai elongasi dan daya serap air film bioplastik, namun menurunkan nilai kuat tarik, dan kemampuan degradabilitasnya. Hasil analisa gugus fungsi dengan FTIR menunjukkan adanya puncak pada serapan gugus -OH, C=O dan C-O menunjukkan bahwa film bioplastik campuran Na-alginat dan CMC mudah untuk terdegradasi. Berdasarkan hasil metode Analytical Hierarchy Process (AHP) menunjukkan bahwa perlakuan terbaik film bioplastik adalah pada perlakuan 35% Na-alginat 35% CMC dengan nilai rata-rata kuat tarik 1,72 MPa, elongasi 48 %, ketebalan 0,46 mm, daya serap air 508,6 %, dan waktu degradasi sempurna 136 hari.
English Abstract
Bioplastic is an alternative material to replace commercial plastic which is made from renewable and easily degraded materials. Syntesis and characterization of bioplastic films made from sodium alginate and CMC with the addition of glycerol as a plasticizer has been carried out. The purpose of this study was to determine the effect of CMC addition as a filler to the characteristics of sodium alginate-based bioplastic films. Bioplastic films are made by bending process using the extrusion method. This study used a completely randomized design (CRD) which consist of four treatments and five replications. Bioplastic films made from a mixture of sodium alginate - CMC with various proportions 35: 35; 40 : 30; 45 : 25; and 50 : 20 % (w/w) and 30 % (w/w) glycerol as plasticizer. The bioplastic films that have been made are then analyzed with mechanical tests (tensile strength and elongation), thickness measurements, water absorption tests, and functional group analysis was tested FTIR. The results showed that an increase in the proportion of CMC could significantly increase the elongation value and water absorption of the bioplastic film, but decrease the tensile strength and degradability. The results of functional group analysis using FTIR showed that there was a peak in the absorption of -OH, C=O and C-O groups indicating that the bioplastic film mixed with Na-alginate and CMC was easy to degrade. Based on the results of the Analytical Hierarchy Process (AHP) method, it shows that the best treatment for bioplastic films is the proportion of 35% sodium alginate and 35% CMC with an average value of tensile strength 1,72 MPa, elongation 48%, thickness 0,46 mm, water absorption capacity of 508,6 %, and a complete degradation time within 136 days.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 0522100446 |
| Uncontrolled Keywords: | film bioplastik, Na-Alginat, CMC, gliserol, ekstrusi,bioplastic film, Sodium Alginate, CMC, glycerol, extrusion |
| Subjects: | 600 Technology (Applied sciences) > 630 Agriculture and related technologies |
| Divisions: | Fakultas Teknologi Pertanian > Keteknikan Pertanian |
| Depositing User: | soegeng sugeng |
| Date Deposited: | 13 Mar 2023 01:24 |
| Last Modified: | 13 Mar 2023 01:26 |
| URI: | http://repository.ub.ac.id/id/eprint/197483 |
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