Utilization of natural crust as a raw material of plastic biodegradable in sustainable development equipment goals

Abstract

East Java Province is the largest sugarcane producer in Indonesia, in year 2015 total sugar cane production in East Java Province reached 1,076,240 tons, in that year Malang Regency is area with the biggest production level that is 273,540 tons. Sugar cane production from Malang is sent to several sugar companies (PG) spread in East Java, such as: PG. Temple and PG. Krembung. Mill sugar mill capacity at PT. Perkebunan Nusantara X PG. Krembung, Sidoarjo which reached 2750 TCD (Ton Canes per Day) produces sludge waste that ranges from 250 kg/day and the waste is not yet utilized, but it is immediately discarded. Sap crust waste is one of the remaining sugar cane processing products derived from the process of thickening sap for sugar crystals. Based on the analysis test, the crust has 30.3% cellulose, 4.52% hemicellulose, and 11.25% lignin. Cellulose is contained in the waste of sap crust, has the potential to be utilized as raw material for making biodegradable plastic. Biodegradable plastic is made by inverse phase method. Making biodegradable plastic using a variation of waste of 2, 4 gr, 6 gr, 8 gr, and 10 gr. The addition of glycerol and sorbitol plasticizers with a ratio of 100: 0, 50:50, and 0: 100 will be formed on a 4 ml basis. The characterization of biodegradable plastic was carried out by using tensile strength and elongation tests. The results showed that on the composition of the 10 gram sap crust with the addition of plasticizer glycerol and sorbitol of 100: 0 has the highest tensile strength value of 8.08 Mpa and the highest elongation on the composition of the crust 2 gram with the addition of plasticizer glycerol and sorbitol of 0: 100 ie by 20.16%.