The Effect of Various Acids to the Gelation Process to the Silica Gel Characteristic Using Organic Silica

Rahman, Nanik Astuti; Widiyastuti, W.; Sigit, Darsono; Ajiza, Masrurotul; Sujana, Wayan

doi:10.1088/1757-899x/299/1/012049

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…The addition of GPTMS or MM improved the interaction of silicic acid with GE, and thus increased further the porosity. However, LAR has a positive influence on extending pore size owing to its longer molecular chains …”

Section: Resultsmentioning

confidence: 99%

“…Besides, the incorporated triazine ring also has a positive effect on improvement of the tensile strength . When modification with LAR, the more flexible macromolecular chains were incorporated into the hybrid SGE‐G‐C, making it more movable under external force; and this introduced organic acid also can slow down the condensation of silicon hydroxyl groups, and inhibit the formation of Si─O─Si network . Therefore, the elongation at break of SGE‐G‐C increased, while the tensile strength reduced.…”

Section: Resultsmentioning

confidence: 99%

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Action of silicic acid derived from sodium silicate precursor toward improving performances of porous gelatin membrane

Zhang

Liu

Gao

et al. 2020

J of Applied Polymer Sci

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To gain an insight into understanding how the silica network generated from hydrolysis and condensation of silicic acid, derived from sodium silicate, enhancing hydrothermal stability and mechanical properties of the leather, and particularly which active groups playing a main role for interaction of silica with collagen protein molecules, herein, effects of incorporated amino or carboxyl groups on the properties of silicic acid modified gelatin (GE) membrane were intensively studied. We found when lots of amino groups were introduced by adding a modified melamine, the thermal denaturation temperature, uniformity of pore diameter distribution and mechanical strength of GE membrane distinctly increased, while incorporating plenty of carboxyl groups by adding low polymerization degree acrylic acid polymer, no obvious change of performances of GE film was discovered. In addition, utilization of γ-glycidoxypropyltrimethoxysilane had a positive effect on the porosity and flexibility of GE membrane. Importantly, our results indicated that hydrogen bonding probably played the most important role toward improving performances of porous GE film when treated with silicic acid. These findings are greatly beneficial for developing a chrome-free tanning technology based on silicon containing materials, and are also suggestive for fabricating porous silica-GE hybrid materials using sodium silicate as a precursor.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Action of silicic acid derived from sodium silicate precursor toward improving performances of porous gelatin membrane

Zhang

Liu

Gao

et al. 2020

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…It was supported by the appearance of the stretching vibration -OH at the wavenumber of 3445.39 cm -1 . This analysis shows that there siloxane functional groups (Si-O-Si) and silanol groups (Si-OH), which the main functional groups in silica gel (Kenneth, 2015) (Rahman, N.A Widiyastuti et al, 2017).…”

Section: Fourier Transform Infra Red (Ftir)mentioning

confidence: 99%

Synthesis and Characterization of Bagasse (Saccharumofficinarum L.) Silica Gel Modified Diphenylcarbazone

Sikanna

Rajmah

Ramadani

et al. 2021

EKW

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Bagasse is a solid waste from the sugar cane milling process in the sugar industry. The waste can be used as an ingredient in making silica gel which functions as an adsorbent. This can be done by changing its chemical structure composition to increase its role and function. This study aims to determine the characteristics of silica gel synthesized from bagasse (Saccharumofficinarum L.) and modified using diphenylcarbazone as much as 0.24 g with sol-gel technique. The characterization results obtained from Fourier transform infrared (FTIR) analysis of diphenylcarbazone modified silica gel, namely the absorption of Si-OH, Si-O-Si groups supported by the appearance of C꞊O, C꞊N, NH, and N꞊N groups. Characterization using x-ray diffraction (XRD) showed a change in amorphous silica to crystals, with the results obtained showing a crystal size of 41.468 nm.Abstrak: Ampas tebu merupakan limbah padat yang berasal dari proses penggilingan tebu pada produksi gula. Limbah tersebut dapat dimanfaatkan sebagai bahan pembuatan silika gel yang berfungsi sebagai adsorben. Hal tersebut dapat dilakukan dengan mengubah komposisi struktur kimianya agar dapat meningkatkan peran dan fungsinya. Penelitian ini bertujuan untuk mengetahui karakteristik silika gel yang disintesis dari ampas tebu (Saccharumofficinarum L.) dan dimodifikasi menggunakan difenilkarbazon sebanyak 0,24 gr dengan teknik sol-gel. Diperoleh hasil karakterisasi dari analisis fourier transform infrared (FTIR) terhadap silika gel termodifikasi difenilkarbazon menunjukkan adanya serapan gugus Si-OH, Si-O-Si yang didukung dengan pembentukan gugus C꞊O, C꞊N, N-H, dan N꞊N. Karakterisasi menggunakan difraksi sinar-x (XRD) menunjukkan perubahan silika amorf menjadi kristal dengan hasil yang diperoleh memperlihatkan ukuran kristal sebesar 41,468 nm.

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Experimental study on indirect mineral carbonation using five types of slag for production of high-purity calcium carbonate

Son,

Kang,

Kim

et al. 2024

J Mater Cycles Waste Manag

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The Effect of Various Acids to the Gelation Process to the Silica Gel Characteristic Using Organic Silica

Cited by 5 publications

References 7 publications

Action of silicic acid derived from sodium silicate precursor toward improving performances of porous gelatin membrane

Action of silicic acid derived from sodium silicate precursor toward improving performances of porous gelatin membrane

Synthesis and Characterization of Bagasse (Saccharumofficinarum L.) Silica Gel Modified Diphenylcarbazone

Experimental study on indirect mineral carbonation using five types of slag for production of high-purity calcium carbonate

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