Increasing the awareness of global warming and the depletion of petroleum resources had made many researchers focuses on using natural materials such as rattan. Its an edible fibers  are prepared to reinforce matrix yielding composite products within the aid of epoxy based resin  and hardener which also perform  as catalyst. The fibres are previously conducted an alkali treatment, this was considered to enhance the cohessiveness of fibers to matrix. Silane and dimethylethanolamine (DMEA) as an adhesives booster is respectively added to the composite formula. The specific purpose of this research is to know the influence of addition of Silane and  DMEA to the final properties of composite; flexural, tensile strength, elongation at break, hardness, and thermal. From the test results it is found that Silane keeps the matrix amorphous, while the addition of DMEA formed crystalline polymer. The ultimate property of the composites are found also depends on fiber woven pattern.

The use of vegetable oils on replacing petroleum has attracted attention of many researchers. The chemical structure of vegetable oils are different from petrochemicals, so the structure of soybean oil has to be chemically modified through its unsaturated fatty acid chain in triglyceride. A two step process was conducted for the preparation of soy-polyol in designated temperatures; 50 °C, 60 °C, and 70 °C. Ethylene glycol (EG) as co-reagent was taking part in soy-polyol synthesis, and the soy-polyol was used as a sole polyol for polyurethane synthesis. Referred to the previous study, the existence of EG in polyurethane synthesis can improved physical properties of polyurethane foam. The aim of this research is using soy-derived polyol for petro-polyol replacement aligned with drop-off of petro-derived reagent; EG. One step process was applied for the foam synthesis. The ingredients for foam synthesis; soy-polyol, Toluene diisocyanate (TDI): a mixture of 2.4 and 2.6 isomers in ratio of 80:20 (TDI T-80), surfactant, and distilled water. The synergize of stoichiometry ratio of co-reagent EG to soy-epoxide with best temperature, with the absence of EG in polyurethane formula can produce an ultimate property of polyurethane foam. Abstrak Sintesis dan Karakterisasi Busa Poliuretan Berbasis Kedelai Menggunakan Etilen Glikol dalam Poliol.Penggunaan minyak sayur sebagai pengganti minyak bumi menjadi perhatian banyak peneliti. Struktur kimia minyak sayur berbeda dari minyak bumi, untuk itu diperlukan modifikasi secara kimia rantai tak jenuh asam lemak rantai trigliserida dalam minyak kedelai. Proses dua tahap dilakukan untuk membuat poliol kedelai menggunakan suhu yang telah ditetapkan; 50 °C, 60 °C, dan 70 °C. Etilen Glikol (EG) sebagai co-reagen mengambil bagian dalam sintesis poliol kedelai, dan poliol kedelai menjadi poliol tunggal dalam sintesis poliuretan. Berdasarkan hasil penelitian terdahulu, ditemukan bahwa penggunaan EG pada sintesis poliol dapat memperbaiki sifat fisika busa poliuretan. Tujuan penelitian ini adalah menggunakan poliol kedelai menggantikan poliol minyak bumi dan sejalan dengan menghilangkan reagen yang terbuat dari minyak bumi; EG. Proses satu tahap dilakukan pada sintesis busa. Bahan yang digunakan untuk sintesis busa adalah poliol kedelai, Toluen diisosianat (TDI) adalah campuran isomer 2,4 dan 2,6 pada perbandingan 80:20 (TDI T-80), surfaktan, dan air suling. Sinergi perbandingan stoikiometri antara co-reagen EG dengan epoksida kedelai pada suhu terbaik, meski tanpa penambahan EG pada pembuatan poliuretan menghasilkan sifat akhir busa poliuretan.

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