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Projects / Programmes source: ARIS

Polymer-based nanocomposites for chemical sensors

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Research activity

Code Science Field Subfield
2.09.01  Engineering sciences and technologies  Electronic components and technologies  Materials for electronic components 

Code Science Field
P260  Natural sciences and mathematics  Condensed matter: electronic structure, electrical, magnetic and optical properties, supraconductors, magnetic resonance, relaxation, spectroscopy 
P351  Natural sciences and mathematics  Structure chemistry 
P400  Natural sciences and mathematics  Physical chemistry 
T150  Technological sciences  Material technology 
T152  Technological sciences  Composite materials 
T170  Technological sciences  Electronics 
T171  Technological sciences  Microelectronics 
Keywords
nanocomposites, polymers, nanoparticles, conductivity, chemical sensors
Evaluation (rules)
source: COBISS
Evaluation of bibliographic research performance indicators according to ARIS methodology
Citations Citations for bibliographic records in COBIB.SI that are linked to records in citation databases
source: WoS source: Scopus source: COBISS
Researchers (6)
no. Code Name and surname Research area Role Period No. of publications
1.  22289  PhD Uroš Cvelbar  Electronic components and technologies  Researcher  2007 - 2009  730 
2.  27704  PhD Nina Hauptman  Chemistry  Junior researcher  2007 - 2009  103 
3.  04423  PhD Marta Klanjšek Gunde  Electronic components and technologies  Head  2007 - 2009  561 
4.  03494  PhD Marijan Maček  Electronic components and technologies  Researcher  2007 - 2009  178 
5.  10429  PhD Miran Mozetič  Electronic components and technologies  Researcher  2007 - 2009  1,352 
6.  24916  Franci Novak    Technical associate  2007 - 2009  0 
Organisations (3)
no. Code Research organisation City Registration number No. of publications
1.  0104  National Institute of Chemistry  Ljubljana  5051592000  20,968 
2.  0106  Jožef Stefan Institute  Ljubljana  5051606000  90,695 
3.  1538  University of Ljubljana, Faculty of Electrical Engineering  Ljubljana  1626965  27,762 
Abstract
Polymer-based nanocomposites suitable for sensing materials to detect the presence of moisture and organic vapours in the capacitive chemical sensors will be prepared. These novel materials will be appropriate for application within the frames of MEMS technology on silicon slices as well as for printing on flexible substrates such as paper and plastic. The epoxy-based photoresist will be applied for the matrix material. Various nanoparticles will be dispersed carefully within this matrix. The state of dispersion will be controlled as well as optimised accordingly. The chemistry and other phenomena occurring at the interaction zone between nanoparticle surface and polymer matrix will be studied in order to understand the changes of electrical properties of the nanocomposite. The temperature-dependent properties will be studied by conductivity measurements of the material in the liquid and solid forms. This way the mechanisms responsible for a change of the electrical properties of the nanocomposite may be understood. This issue is of tremendous importance for preparation of suitable sensing material swhich may be used in all the proposed application techniques. The most important goal of the project is to provide the knowledge needed for formulation and preparation of nanocomposites that are suitable to serve as sensing materials for efficient low-cost chemical sensors. Thus, the proposed project has the ambition to form the necessary basic know-how for the high-value added products (e.g. in smart packaging) in the near future.
Significance for science
Basic and applied knowledge in the field of conductive composites were formed. Applied features concern several important details of preparation procedures and the ways to get suitable application properties of final material. Basic facts on the role of material structure were recognised and a possible explanation was proposed. One of them is the role that chemical structure of polymer matrix has in conductivity of the composite and the other is the role of interlayer between the conductive inclusions and isolative medium. These intrinsic structural properties are considerably important for a composite to get the largest possible conductivity applying the same materials and the same concentration of functional particles. An analogy to polymer grafting with nanoparticles and to doping of suitable polymers during synthesis of (semi)conductive polymers was suggested. According to our data this is the first interpretation of such general relations between conductive (nano)composites and conductive polymers. The most important results of the research has been published already, the other were submitted for publication or are prepared to be submitted. We expect them to be published in the near future, most likely in the year 2010.
Significance for the country
Basic knowledge in the field of conductive nanocomposites is of considerable importance in several up-to-date applications. Shortly after starting this project, the project group connected with the Department of graphic and textile from on the Faculty of Natural Sciences and Engineering at the University of Ljubljana. We are working together on the applied project “Printed passive electronic components for smart packaging” which is co-founded by Zavod za sito, digitalni in tampo tisk, Sežana. The knowledge obtained on both projects and awareness of its actuality and applicability gives rise to the master degree course (3rd bolognia level) entitled “Printed electronics” on the Faculty of Natural Sciences and Engineering. The basic lecturer is doc. dr. Marijan Maček, and one of the lecturers is doc. dr. Marta Klanjšek Gunde. Conductive polymer nanocomposites are one of the most important materials for printed electronics. They are frequently named as functional printing inks. Basic knowledge from the current project is of considerable value in this special field. Dissemination of knowledge to our community is assured by the above-mentioned applied project, first of all through students of information technology and graphic art. Basic aspects of the current project are involved also in PhD thesis of young researcher Nina Hauptman. It will be finished this year on the Faculty of Chemistry and Chemical Technology, University of Ljubljana.
Most important scientific results Annual report 2008, final report, complete report on dLib.si
Most important socioeconomically and culturally relevant results Annual report 2008, final report, complete report on dLib.si
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