shirley, savetlana and Eko, Pratama and Riski, Pratama and Nafrizal, Nafrizal and Aniek, Handayani and Mochammad, Chalid and Adi, Cifriadi (2019) The tensile strength of natural rubber coagulated with mengkudu fruit (Morinda Citrifolia) and tawas (Al2(SO4)3).nH2O). Prosiding SNTTM XVIII. ISSN 2623-0313

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Abstract

Natural rubber is made of latex or isoprene polymer (C3H8). It was obtained from latex sap by tapping of rubber plant (Havea Brasiliensis). Mengkudu (Morinda Citrifolia) contained acid. It can be used to coagulate the latex. In this research, the latex was coagulated using extracted mengkudu and tawas. The mengkudu and tawas loading in latex were 2.5%, 5%, 7.5% and 10%. The preparation of the natural rubber from latex is as follows: preparation of extract mengkudu or tawas, mixing latex and coagulant, moulding, pressing and curing. The coagulation time decreased as percentage of mengkudu or tawas loading increased. The highest tensile strength and modulus of natural rubber were obtained from latex coagulated with 2.5% mengkudu and 7.5% tawas, respectively.

Item Type: Article
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TP Chemical technology
Divisions: Fakultas Teknik (FT) > Prodi Teknik Mesin
Depositing User: Dr Shirley Savetlana
Date Deposited: 27 May 2020 07:45
Last Modified: 27 May 2020 07:45
URI: http://repository.lppm.unila.ac.id/id/eprint/20696

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