Physical and mechanical of breadfruit leaves-polyethylene composites

1st International Symposium on Green Technology for Value Chains 2016

工业技术;生态环境科学

Satoto, R.^1 ; Rohmah, S.^2 ; Suhandi, A.^2

Research Unit for Clean Technology, Indonesian Institute of Sciences (LIPI), Jalan Cisitu 21/154 D, Bandung

40135, Indonesia^1

Deparment of Physics Education, Universitas Pendidikan Indonesia Jalan, Dr. Setiabudhi 229, Bandung, Indonesia^2

关键词: Biodegradation process;    Bulk composites;    Composite properties;    Flexural modulus;    Internal mixers;    Polyethylene composites;    Polymeric composites;    Universal testing machines;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/60/1/012011/pdf
DOI  :  10.1088/1755-1315/60/1/012011

来源: IOP

【 摘 要 】

A degradable polymeric composite was prepared from polyethylene (PE) and breadfruit leaves tree powders. Breadfruit leaves tree powders were mixed with PE in an internal mixer at a temperature above the glass transition of PE without additives. Formulations were based on PE/leaves ratio of 100/0, 90/10, 85/15, 80/20 and 75/25 on a dry weight basis. The effect of leaves powders of 140 and 100 meshon the composite mechanical properties was evaluated by means of universal testing machine (UTM) and hardness Rockwell tester. The results showed increases of elastic modulus and flexural modulus of the composites with increasing leaves powders. Tensile strength, yield strength, yield strain, and hardness decreased with increasing percentage of leaves powders in the composites. Flexural strength was slightly decreased with the presence of the leaves powders but independent on the percentage of the leaves powders. In general, the composite properties of 140 mesh leaves powders were more enhanced compare with that of 100 mesh. PE/leaves composites increased water absorption and caused the bulk composite surface more porous. Hence, oxo-biodegradation processes will more easily take place in the PE/leaves composites.