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• W2242321812 abstract "Abstrak Sintesis organolempung dari bentonit alam Indonesia telah berhasil dilakukan. Bentonite alam yang digunakan untuk bahan dasar organolempung dipilih dari tiga sampel yang berasal deposite di Sukabumi, Pontianak, dan Pacitan. Spektroskopi FTIR, XRD dan SEM serta kuantifikasi kapasitas tukar kation (KTK) digunakan untuk menganalisis dan menentukan kualitas sampel yang diperiksa. Bentonite dari Pacitan dipilih karena memiliki kandungan montmorillonite tertinggi yakni 71% dan KTK sebesar 77 meq/100g. Selanjutnya, material bentonite terpilih digunakan untuk sintesis organolempung. Surfaktan kationik CTMABr digunakan sebagai pengubah muatan permukaan lempung untuk meningkatkan karakteristik hidrofobik permukaan lempung. Oganolempung hasil sintesis dikarakterisasi menggunakan XRD, TGA dan FTIR. Organolempung hasil sintesis menunjukkan spasi antarlapis sebesar 18 – 39 A. Thermogram TGA menunjukkan bahwa organoclay hasil sintesis memiliki dua kali pelepasan massa CTMABr yang berkorelasi dengan posisi lokasi CTMABr pada dua lokasi yang berbeda. Data-data tersebut memberikan informasi keberhasilan sintesis organolempung berbahan dasar bentonit alam Indonesia menggunakan CTMABr sebagai pemodifikasi permukaan. Abstract Synthesis and Characterization Organoclay from Indonesian Bentonite Synthesis organoclay from Indonesian natural bentonite from Indonesia has been carried out. Natural bentonite has been chosen from three samples from Sukabumi, Pontianak and Pacitan deposites. The FTIR, XRD, SEM spectroscopy and quantification of CEC (cation exchange capacity) techniques were employed to analyze the quality of these samples. Bentonite from Pacitan was chosen as the finest quality of bentonite, because it has bot the highest montmorillonite content i.e 71% and the highest CEC i.e 77 meq/100 g. Furthermore, the bentonite was used as material for organoclay synthesis. Cationic surfactant of CTMABr has been used as surface modifier to improve the hydrophobic properties of clay. The organoclay was then characterized by using XRD, TGA and FTIR. The organoclay has d-spacing of around 18-39 A. TGA thermogram show that the organoclay has two differences of CTMA group dissociation temperature from the clay surface due to differences of CTMA group location. These data show that organoclay succesfully synthesized from natural Indonesian bentonite and CTMABr as surface modifier. Keywords: Organoclay, Natural Bentonite" @default.
• W2242321812 created "2016-06-24" @default.
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• W2242321812 date "2015-06-30" @default.
• W2242321812 modified "2023-10-01" @default.
• W2242321812 title "SINTESIS DAN KARAKTERISASI ORGANOLEMPUNG DARI BENTONIT INDONESIA" @default.
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