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Your search keyword '"Tjahjanto, Rachmat Triandi"' showing total 2 results
Start Over Author "Tjahjanto, Rachmat Triandi" Topic porous ceramic
2 results on '"Tjahjanto, Rachmat Triandi"'

1. The Effect of Thermal Treatment on the Characteristics of Porous Ceramic-Based Natural Clay and Chitosan Biopolymer Precursors

Author

Putri, Suriati Eka, Ahmad, Ahyar, Raya, Indah, Tjahjanto, Rachmat Triandi, Irfandi, Rizal, Karim, Harningsih, Desa, Susilo Sudarman, and Rahman, Abd

Subjects
porous ceramic, gel casting, sintering, clay
Abstract

This study was conducted to determine the role of thermal treatment on the crystallinity and pore characteristics of porous ceramic, which was prepared from natural clay (NC) and chitosan (CS) biopolymer using the gel casting method. CS was used as an environmentally friendly pore-forming agent. The applied temperature treatment was based on thermal analysis (TGA/DTA) results and followed a sintering temperature of 900 to 1100 °C. The results showed that at sintering temperatures from 900 to 1000 °C, the crystallinities of the ceramic decrease (from 76.06 to 74.06%) and the crystallite size decreases (from 35.71 to 34.47 nm) while the lattice strain increases (calculated from the Full Width at Half Maximum (β) of the diffraction peak). The highest porosity of ceramic occurred at a sintering temperature of 1000 °C of 37.82 ± 0.19, but the formation of heterogeneous microstructure was observed. The resulting pore size for all temperature treatments was almost mesoporous (19.1 Å). Based on the results obtained, it is emphasized that the sintering temperature can be used to adjust the porosity and microstructure of porous ceramics.

Published
2023

2. A REVIEW OF THE DEVELOPMENT OF THE GEL CASTING METHOD FOR POROUS CERAMIC FABRICATION.

Author

Putri, Suriati Eka, Ahmad, Ahyar, Raya, Indah, Tjahjanto, Rachmat Triandi, Natsir, Hasnah, Taba, Paulina, and Karim, Harningsih

Subjects
GELCASTING, CERAMICS, DISPERSING agents, CATALYST supports, POLYMER colloids, ENERGY storage, RAW materials
Abstract

The objective of this paper is to present an overview of the development of gel casting methods on synthesis techniques and the characteristics of gel casting porous ceramics and its applications. The gel casting method is a colloidal ceramic synthesis method that requires a short period for the ceramic body to develop. This review provides the latest developments in the gel casting process of synthesizing porous ceramics. At the beginning of the gel casting method development, the acrylamide (AM) system was the most commonly utilized system. Over time, the use of the AM system began to be minimized because of its toxicity. Researchers began to develop natural polymers as pore templates and natural minerals as raw materials in the gel casting method. In addition to polymers and raw materials, the gel casting process also requires additives such as gelling agents and dispersants. At the end of this review, a mapping of how to select the additives in the gel casting process, for AM systems and non-AM systems for the fabrication of porous ceramics is presented. The characteristic of porous ceramics produced by AM and non-AM systems are almost similar. Porous ceramic applications have been used as bone tissue supports, energy storage, filters, and catalyst support. This review will be a reference for future research related to the process of fabrication of advanced porous ceramics using the environmentally friendly gel casting method. [ABSTRACT FROM AUTHOR]

Published
2023
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