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KARAKTERISASI BIOPLASTIK DARI PATI KULIT SINGKONG DENGAN PENAMBAHAN KITOSAN Selvie Diana; - Adriana; - Saifuddin; Rijalul Fikri
Jurnal Teknologi Vol 14, No 2 (2014): Jurnal Teknologi
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v14i2.244

Abstract

Bioplastics is one of solutions of environmental problems. Fairly high starch content allows peel of cassava can be utilized as a plastic film that can be described biodegradation by microorganisms naturally back into compounds that are environmentally friendly. This study aimed to determine the effect of chitosan on the characteristics of bioplastics made from cassava starch peel. This research was conducted in three phases, namely cassava starch manufacture peel, manufacture of bioplastics from starch cassava peel and analysis stages that include tensile strength test (Tensile Srength), swelling test, biodegradation test and a test of functional groups using FTIR. The results showed that chitosan is able to improve the mechanical properties of bioplastics and water resistance properties. This is indicated by the value of 6.67 MPa tensile strenght and swelling test by 60% generated by the composition of peel cassava starch 12 grams, chitosan 3% and 4 ml glycerol plasticizer. While microbial biodegradation test by using EM4 shows that bioplastics can be degraded for 6 days. Results of the analysis indicate functional groups bioplastics from cassava starch showed a pattern peel absorption at wave number region similar to cassava starch peel where there is CH, C = C and OH
PENGARUH WAKTU PENCUCIAN TERHADAP SIFAT MEKANIS PRODUK LATEKS KARET ALAM RENDAH PROTEIN - Yuniati; - Adriana; Ramzi Jalal
Jurnal Teknologi Vol 14, No 2 (2014): Jurnal Teknologi
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v14i2.247

Abstract

This study is aimed to observe the use of coconut shell  used as Carbon  for  filler material for  gloves making. Two important factors in making  gloves with the immersion technique  are  leaching and heating processes   that can increase the mechanical properties. This research is also aimed to find a solution of washing procedure  and the best time  to get the mechanical properties, so  the laundering can  reduce the  allergic reaction for the sentive users... A method which has been experienced is  maturation process  for 24 hours and was condunted of vulcanization by  drying it in the oven with  100 °C for 15 minutes. The leaching process of the film is conducted by using some sort of solutions ;  aquadest, 1% sodium hydroxide and 1% Ammonium hydroxide . The examining time used for laundering and soaking are 30, 60 and 90 minutes.. The highest tensile strength was obtained in 30 minutes soaking time with 25,3 MPa Aquadest. . The tensile strength increased along with the extra time for laudering and soaking process in 90 minutes with aqudest and 90 minutes with 800 % sodium hydroxide. . The highest modulus , 300 %, was obtained in 90 minutes soaking/ laundering time in 1,7 Mpa Ammonium Hydroxide solution
Co-Authors - Saifuddin - Yuniati Ramzi Jalal Rijalul Fikri Selvie Diana