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INIZIO_TESTO_DA_INDICIZZARE

Fund for investing in fundamental research

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Research Units
  • Universita' di PISA
    CHIMICA E CHIMICA INDUSTRIALE, PISA (PI)
  • Istituto Nazionale Fisica della Materia (INFM)
    Unit¿ di Ricerca di Pisa, GENOVA (GE)
  • ISTITUTO SUPERIORE MARIO BOELLA
    LABORATORIO MATERIALI E MICROSISTEMI, TORINO (TO)
  • Laboratorio di ricerca industriale
    Ricerca e Sviluppo, VENEZIA (VE)
  • Consiglio nazionale delle ricerche (CNR)
    Istituto per lo studio delle macromolecole, MILANO (MI)
Similar FIRB:
Scientific and education field classification
International Patent Classification
Geographical classification
Bibliografia
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Keywords
films, nanostructures, nanocomposite, nanoparticles, sensors, polymers, biopolymers; optical properties, electromagnetic radiation, ecocompatible materials,; renovable sources, RF-identification, intelligent packaging,; plastic electronics ,wireless technology

New Nanostructured Materials and Polymer Films for Flexible Packaging with reduced Environmental Impact and responsive to chemical and physical actions. Study of the microscopic phenomenology, models and simulation, experimental validation, polymerization and blending processes. (NANOPACK)

Università di Pisa
Abstract
Flexible packaging market in Italy is increasing constantly: +5-6% in 2003, 50% (230.000 ton/year, corresponding to 1300 Million Euro) of the total production being exported. Italy has then a leading position in Europe as far as both quantity and quality are concerned and consequently innovation is highly requested. Further to conventional properties, innovation is devoted to meet and stimulate the market need in order to improve performances in terms of safety and reduce the environmental impact. The most interesting aspects are: i) modulation of the response to electromagnetic radiation aimed to better aspect, improved protection, noninvasive treatment and information for producers and users; ii) aging and alteration (including crime) markers by the inclusion of specific sensors and active systems in the film; iii) replacement of man made materials with natural materials from renewable sources (biopolymers) and tracing of the film composition. Nanotechnology, surface treatments and plastic electronics are therefore assuming growing interest but an intensive research activity is necessary for the proper application to polymer films in a compatible way, to products design and industrial processes.
As a consequence of the above aspects the specific objectives of the present project are:
1) development of nanostructured materials for flexible films which can react on the action of external radiation or intrusive chemicals thus allowing properties modulation, and control as well as the efficient protection of the content (active packaging).
2) Films containing molecular sensors allowing to detect the alteration and contamination of the product, and/or electronic or electrooptic systems for information recording and transfer (intelligent packaging).
3) Plastomer and elastomer based on natural polymers alternative to man made polymers by chemical and physical modification of cellulose and dispersion of nanoparticles/nanocomposites (renewable ecocompatible packaging).
The above objectives will be pursed by performing the properly selected reseach activity in a coordinated research groups of five units selected among the most advanced in Italy.
DCCI - University of Pisa: synthesis of inorganic and organic compounds, functionalization and reactive blending, surface analysis, thermal and mechanical analysis.
ISMAC - CNR: polymerization processes, electric and electronic polymeric materials, structural characterization, electronic microscopy.
INFM - Pisa: electromagnetic radiations response, MW and UV treatments, tunnel, FMA and optical microscopy, techniques for physical properties measurements, modelling.
ISMB: wireless technology, microelectronics and MEMS, plastic electronis, rheology.
CIP: plasma treatment, film preparation by mixing, extrusion, coupling of layers.
An additional objective is the development of CIP as a private/public institution for the transfer of technology; the training of jung researchers for industry and research and a network to support innovation. Also the development of responsive material is well correlated to the possible European network on smart polymers (Polysmart). <<<

Principal Investigator
Francesco CIARDELLI Universita' di PISA
Research Goal
The general objective of the present proposal is the preparation of polymer based films with advanced properties and the evaluation of their performances. These films consist of a continuous matrix of macromolecular origin including dispersed micro- or nanophases responsive to external stimuli of different type. The fine dispersion of various materials in a polymer matrix allows on one side to combine in a single material different functional properties and on the other side processable films with optimized structural properties.
The mixing process at molecular level used for the preparation of the requested materials is highly sustainable .Indeed it is based on the development on innovative materials based on the structural complexity typical of nature rather than on the molecular differentiation typical of man-made systems.It uses mature products and the mixing occurs with very low emission and high product yield.The general objective is in particular described by the following subobjectives all aimed to film for advanced packaging:
#Polymeric films with innovative functional properties with responsiveness to external stimuli and possible external control obtained by intimate blending of synthetic polymers ,such as polyolefins, polyesters and polyamides,with nanostructured dispersed phases deriving from organic or inorganic compounds ,metallorganic compounds .Mixing will be performed mainly by reactive blending in the melt or by reactor blending.In addition to the basic properties of the film for packaging ,namely mechanical strength , elastic recovery , gas barrier and low flammability , the new added properties are control of the dispersed phase organization and orientation, color change under irradiation , change of surface properties under electromagnetic field. Also electronic circuits and devices can be inserted for a remote evaluation of the product conditions and conservation.
#Polymer based packaging films responsive to specific chemical products deriving from the content alteration or from the changes of the molecular environment .These films will be obtained by including in the macromolecular matrix metal complexes , catalyst , synthetic and biological sensors.
#Polymer films derived from renewable sources , such as natural macromolecular compounds, with the basic properties necessary for materials to be used as flexible films for packaging. Starting from cellulose the study concerns with the chemical modification and the blending of the natural polymers thus affecting fibers interactions in the bulk and with the various dispersed phases.
The important common characteristic of all the prepared films and materials is their physical aging and fatigue resistance .Both aspects will be studied by experimental techniques and numerical microscopic simulation.

As a consequence of the above aspects the specific objectives of the present project are:
1) development of nanostructured materials for flexible films which can react on the action of external radiation or intrusive chemicals thus allowing properties modulation, and controlò as well as the efficient protection of the content (active packaging).
2) Films containing molecular sensors allowing to detect the alteration and contamination of the product, and/or electronic or electrooptic systems for information recording and transfer (intelligent packaging).
3) Plastomer and elastomer based on natural polymers alternative to man made polymers by chemical and physical modification of cellulose and dispersion of nanoparticles/nanocomposites (renewable ecocompatible packaging).
An additional objective is the development of CIP as a private/public institution for the transfer of technology; the training of jung researchers for industry and research and a network to support innovation.Indeed the project plans also to develop the research facilities of the CIP in order to allow this private/public organization ,created by the cooperation of CNR-INFM , INSTM and Gruppo X , which has the role of bring the results of the basic research to the level granting the efficient transfer to industry.This last objective is well to that of an improvement of the potentiality of the network for innovation support and then it integrates very well with the role of CIP as interface for the activity of technology transfer. Indeed both DCCI and INFM research groups alredy participate with CIP in research projects for innovative research in are of materials for packaging : The group is now integrated by the inclusion of the research units at the ISMB and CNR-ISMAC bringing their respective additional expertise in wireless technology ,microelectronics ,polymerization processes and polymer characterization by various advanced techniques.
A final objective will be the training of a significative number of young researchers for their future research activity in the industry and in the research centers either public or private.
The expected results are:
Preparation of polymeric films characterized by the preservation of the optimal thermal and mechanical properties and containing suitable organic, inorganic derivatives and metal nanoparticles. The polymer composites will be realized by melt processing or components suspension in water phase (cellulose).
Film characterized by variable optical properties to the type and time optical exposition.
Polymeric films containing metal nanoparticles and metal complexes with catalytic properties, able to induce chemical modification of gas and liquid effluents and to increase the shelf life of the protect object.
Polymeric films with modulated chromatic, electronic and opto-electronic properties by varying the nanophase dimension due to controlled photo- and chemio-reducing processes, the blending of processable electro-conducting polymers or polyelectrolytes.
The definition of investigation systems able to propose a new versatile method to preparing surface active films by migration of functional species under an applied external force.
Achievement of packaging systems able to record information of external chemical and physical interferences, tracing back the previous history of the system.
Polymeric films containing enzymes as natural sensors.
Polymeric films with circuits and polymer-devices-based microsensors (Plastic electronics).
Development of multicomponent materials based on cellulose showing extensibility and elastic recover, with an especially high elastic modulus in the region of non-linearity and enhanced elastic elongation provided by an increased presence of amorphous domains or by the introduction of highly conformationally flexible inter-macromolecular bridges.
New highly performing nanocomposites based on renewable base polymers, where gas-barrier activity, flame retardancy and active protection properties will be provided by the introduction of one or more additives capable of inducing specific structural or morphological changes, and thus additional functionalities, in the macromolecular system.
Polymer blends based on cellulose and/or other natural or modified polysaccharides with both hydrophylic and hydrophobic synthetic polymers, selected for the suitability of their use as components of packaging films. <<<
Timescale
36 months