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Abstrak :
Permukaan merupakan sebuah figur 2 dimensi yang melapisi suatu massa. Suatu wujud dapat dimanifestasikan dengan adanya permukaan dan material. Permukaan material sangat mempengaruhi suatu kualitas bentuk, terlebih dalam mewujudkan suatu wujud dengan bentuk arsitektur tertentu seperti ruang amorphous. Ruang amorphous merupakan bentuk ruang arsitektur yang tidak mempunyai bentuk yang jelas (multitafsir). Pembentukkan ruang amorphous membutuhkan material yang tepat guna agar dapat menghasilkan permukaan amorphous yang unik. Pemaknaan mengenai permukaan dan material akan menjadi sedikit berbeda bila ditelusuri melalui studi ruang amorphous. Dalam prosesnya, studi menghasilkan bahwa peran permukaan dan material pada ruang amorphous yang beragam, menunjukkan perbedaan-perbedaan pada aspek peran permukaan material sebagai pembentuk wujud, identitas, kualitas, dekorasi, program, dan dalam pengembangan materialnya. ......Surface is a 2 dimensional figure which covers the mass. A form can be manifested with the influence of surface and material. The surface of the material greatly affects the quality of form, especially in realizing a form with a certain architectural form such as amorphous space. Amorphous space is a form of architectural space that does not have a clear form (multi-interpretation). The formation of amorphous space requires appropriate materials in order to produce a unique amorphous surface. The meaning of the surface and the material will be slightly different when traced through the study of amorphous space. In the process, the study resulted in the role of surfaces and materials in various amorphous spaces, showing differences in aspects of the role of material surfaces as forming form, identity, quality, decoration, program, and in the development of the material itself.

Abstrak :
Santa Barbara Amorphous-15 (SBA-15) is an interesting mesoporous silica material with highly ordered nanopores and a large surface area. Due to its unique properties, this material has been widely employed in many areas. This study aimed to predict the number of nanopores per gram of SBA-15 material based on an optimum value of surfactant addition at the desired number of nanopores. For this purpose, SBA-15 was synthesized via a sol-gel process using tetraethyl orthosilicate (TEOS, Si(OC2H5)4) as a precursor and pluronic P123 triblock copolymer surfactant (EO20PO70EO20, EO = ethylene oxide, PO = propylene oxide) as a template. There were five different surfactant concentrations, namely 0.35, 2.50, 2.70, 3.00, and 3.30 millimoles, used with a fixed concentration of TEOS. The characterization was performed using small-angle x-ray scattering (SAXS), adsorption-desorption (BET), and transmission electron microscopy (TEM). The results showed that the surfactant concentration did not affect the crystal structure, although an increase in the surfactant concentration linearly correlated with an increase in the surface area. The shape and size of the pore diameter tends to be approximately 3 nm, as characterized using BET adsorption-desorption. The optimum concentration of surfactant for the formation of mesoporous SBA-15 material was 2.70 millimoles. The value obtained in this study was in accordance with the calculated value, indicating that the theoretical calculations can be used to experimentally predict the number of pores.