MESOPOROUS SILICA FORMATION BY BLOCK COPOLYMERS AND CETYLTRIMETHYLAMMONIUM BROMIDE AS STRUCTURE CONTROL AGENT

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SEMSARZADEH MOHAMAD ALI; AZADEH MAEDEH

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Paper Information

Journal: Iranian Journal of Polymer Science and Technology Year:2012 | Volume:24 | Issue:6 (ISSUE NUMBER 116) Page(s): 446-453

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Title

MESOPOROUS SILICA FORMATION BY BLOCK COPOLYMERS AND CETYLTRIMETHYLAMMONIUM BROMIDE AS STRUCTURE CONTROL AGENT

Author(s)

SEMSARZADEH MOHAMAD ALI | AZADEH MAEDEH | Issue Writer Certificate

Keywords

NANO SILICA STRUCTUREQ2

BLOCK COPOLYMERQ3

TEMPLATEQ2

CATALYST SUPPORTQ2

MESOPOROUSQ2

Abstract

Block copolymers and cetyltrimethylammonium bromide were used as TEMPLATEs in NANO SILICA STRUCTURE formation like MCM-41 (Mobil Composition of Matter), SBA16 (Santa Barbara Amorphous) and a new compound namely SPB (silicone MESOPOROUS particles, prepared by sol-gel method using PPO-PEGPPO BLOCK COPOLYMER) to compare the porosity and regularity of the products together. In this work tetraethylorthosilicate (TEOS), as silica source and alcohol as surface modifying agent were used because of having the main advantage, compared to an ionic TEMPLATE such as cetyltrimethylammonium bromide, in producing larger pores and thicker walls for holding larger catalytic molecules in their pores or increasing their resistance towards fragmentation. In order to study the copolymer as a TEMPLATE, SPB structure was prepared and compared with SBA16 which was found to have broader pore-size distribution and smaller specific surface area. Using alcohol in particle production resulted in higher formation rate of micelles with improved morphology. Nitrogen adsorption-desorption, X-ray diffraction and electron scanning microscopy confirmed the MESOPOROUS structure and regularity of these synthesized materials. Finally a mechanism is proposed for the formation of these structures

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APA: Copy

SEMSARZADEH, MOHAMAD ALI, & AZADEH, MAEDEH. (2012). MESOPOROUS SILICA FORMATION BY BLOCK COPOLYMERS AND CETYLTRIMETHYLAMMONIUM BROMIDE AS STRUCTURE CONTROL AGENT. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), 24(6 (ISSUE NUMBER 116)), 446-453. SID. https://sid.ir/paper/6356/en

Vancouver: Copy

SEMSARZADEH MOHAMAD ALI, AZADEH MAEDEH. MESOPOROUS SILICA FORMATION BY BLOCK COPOLYMERS AND CETYLTRIMETHYLAMMONIUM BROMIDE AS STRUCTURE CONTROL AGENT. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN)[Internet]. 2012;24(6 (ISSUE NUMBER 116)):446-453. Available from: https://sid.ir/paper/6356/en

IEEE: Copy

MOHAMAD ALI SEMSARZADEH, and MAEDEH AZADEH, “MESOPOROUS SILICA FORMATION BY BLOCK COPOLYMERS AND CETYLTRIMETHYLAMMONIUM BROMIDE AS STRUCTURE CONTROL AGENT,” IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), vol. 24, no. 6 (ISSUE NUMBER 116), pp. 446–453, 2012, [Online]. Available: https://sid.ir/paper/6356/en

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