Effect Carrageenan to Biodegradable Plastic From Tubers

Abstract

Plastic waste can cause serious environmental problems. This can be overcome by various efforts; one of them is by replacing the use of conventional plastic with biodegradable plastic. Biodegradable plastic can be produced from tubers containing starch. The purpose of this study was to explain the suitability of two tuber species with typical protein quality and different starch structures. Starch was obtained from suweg tuber (Amorphophallus campanulatus) and ganyong (Canna edulis Ker). The material invested was obtained by dissolving 4 grams of each starch, each of which was dissolved with distilled water then added with various weight carrageenan. The tensile strength of biodegradable plastic was tested using tensile testing machines, biodegradation of soaked plastics using EM4 (Effective Microorganism) with reduced weight measurements, and Fourier Transform Infra-Red (FTIR) was used to identify the structure of compounds contained in biodegradable plastics. The tensile strength test results of biodegradable plastic from ganyong/canna tubers were 3.35 MPa with elongation of 13.51%, while the plastic from suweg tubers of 2.45 MPa with elongation was 13.68% on the addition of 5% carrageenan, respectively. Plastic degradation testing obtained plastic decomposition up to 100% in 37 days for ganyong and 34 days for suweg, respectively. It showed that the plastics was easily degraded. Identified by FTIR showed chemical structures of OH phenolic alcohols, C = O carbonyls, CO esters, NH amides and amines, and C≡C alkyne.

Kinetic Hydrate Inhibition by Lambda-Carrageenan and Its Synergistic Compositions with Ethylene Glycol, 4-Methyl-1-Pentanol, Polyvinylpyrrolidone, and Polyvinylcaprolactam

“…This study aims to evaluate the hydrate-inhibiting potential of Lambda-Carrageenan (λ-crgn), a natural, sustainable, biodegradable, and non-toxic polysaccharide. While the biodegradability of PVCap and PVP is less than 2% in 28 days. − All different derivatives of carrageenan show very high biodegradability and have almost 90% degradation within 30 days. − The study aimed to assess the performance of different variants of λ-crgn when used alone and when combined with different solvents, such as mono ethylene glycol (MEG) and 4-methyl-1-pentanol (4m1P), and with commonly used KHIs, such as polyvinylpyrrolidone (PVP) and Polyvinylcaprolactam (PVCap). Figure displays the structures of λ-crgn, the two solvents, and the two KHI polymers used in the study.…”

Sifat Fisik dan Mekanik Bioplastik Komposit dari Alginat dan Karagenan

“…Bioplastik yang terbuat dari hidrokoloid alginat memiliki kelemahan yaitu tingkat resistensi terhadap air yang rendah, karena banyaknya kandungan gugus hidroksil (-OH) dalam molekulnya. Untuk mengatasi hal tersebut perlu ditambahkan karagenan yang merupakan polimer hidrofilik alami dengan rantai linier galaktan sulfat yang dapat membentuk matriks polimer yang kuat dan meningkatkan kuat tarik antar molekul (Rusianto et al, 2020). Penggunaan alginat sebagai bahan bioplastik dan pencelupan dengan CaCl2 mampu meningkatkan resistensi bioplastik terhadap air (Langit et al, 2019).…”

Pengaruh Penambahan Zat Pemlastik Gliserol Terhadap Sifat Mekanik pada Pembuatan Bioplastik dari Kitosan - Umbi Porang (Amorphophallus Muelleri Blume)

“…Nilai kemuluran berada sekitar 2-6% dengan penambahan gliserol dari 5-25%. Kecenderungan yang sama terjadi pada bioplastik dari terbuat dari pati aren-glukomanan, suweg dan ganyong, peningkatan gliserol pada dua jenis bioplastik tersebut meningkat dengan meningkatnya zat pemlastik dalam bioplastik [15], [16]. Zat pemlastik gliserol menempati ruang intermolekuler dalam rantai polimer, sehingga zat pemlastis mengurangi gaya antar molekul dan berakibat tingkat mobilitas antar molekul meningkat [15], selain itu terjadi peningkatan ikatan gugus −OH dari umbi porang dengan gugus −NH2 dari kitosan yang berakibat pada peningkatan elastisitas.…”