Single step process for particles surface modification or thin film composite production

Adsorbent materials and composites are quite useful for sensor development. Therefore, the aim of this work is the surface modification of particulates and/or composite formation. The material was produced by plasma polymerization of HMDS (hexamethyldisilazane) in a single step. SEM analysis shows g...

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Published in:Sensors and actuators. B, Chemical Chemical, 2009-03, Vol.137 (1), p.170-179
Main Authors: Lima, R R, Carvalho, RAM, Silva, L M, Simoes, E W, da Silva, MLP
Format: Article
Language:English
Subjects:
Actuators
Liquids
Particulate composites
Particulates
Polymerization
Sensors
Surface chemistry
Thin films
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container_title Sensors and actuators. B, Chemical
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creator Lima, R R
Carvalho, RAM
Silva, L M
Simoes, E W
da Silva, MLP
description Adsorbent materials and composites are quite useful for sensor development. Therefore, the aim of this work is the surface modification of particulates and/or composite formation. The material was produced by plasma polymerization of HMDS (hexamethyldisilazane) in a single step. SEM analysis shows good surface coverage of particulates with a plasma polymerized film formed by several clusters that might increase adsorption. Particles (starch, 5km) recovered with HMDS films show good properties for retention of medium-size organic molecules, such as dye. Thin films formed by a mixture of particles and plasma polymerized thin film HMDS species were obtained in a single step and can be used for retention of organic compounds, in liquid or gaseous phase.
doi_str_mv 10.1016/j.snb.2008.11.040
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subjects Actuators
Liquids
Particulate composites
Particulates
Polymerization
Sensors
Surface chemistry
Thin films
title Single step process for particles surface modification or thin film composite production
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