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|You are here: Home > Technique > Processes > Scientific report of the LGP2 > Converting Biomaterials Packaging > Introduction||Update: July 21, 2011|
|Scientific report of the LGP2 (2006-2009)|
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|Researchers of the LGP2
Converting Biomaterials Packaging group is developing knowledge on new materials and processes to propose innovative solution in the packaging area. Its fields of competences start with raw materials study and treatment, and goes up to their processing and end-use properties analyses. This group is developing investigations with a special emphasis on the following two pillars: sustainable development (bio-based materials, green process) and new functional materials.
The research is organised following three main topics:
The main interest of this topic is the study of nanocomposites material based on renewable resources. Regarding nano-scale bio-based reinforcements, new strategies of chemical modification have been developed in order to improve their compatibilization with the matrix but also to help their dispersion into non polar solvents and to open new ways of processing (e.g. extrusion). Considering cellulose whiskers, the group expertise is based on source diversification, new process development and mechanical properties analyses. This nano-reinforcement research area is also focused on multi-scale approaches by working in the same time on microfibrillated cellulose (MFC) and cellulose nanocrystals.
Different approaches of surface chemical modification applied to cellulose fibres have been studied, in order to improve the interfacial adhesion in the composite and/or to obtain hydrophobic fibres. Thus, several new methods were recently developed, namely:
Various cellulose substrates have been tested and numerous characterization techniques were used. Additionally, other investigations on coating and microencapsulation of pressure sensitive adhesives have been realized.
The main objectives associated with functional packaging concern the mechanical properties of cardboard packaging and biocomposites and their 3D processing. Regarding cardboards, a PhD study on the hygroexpansive behaviour of packaging is in progress aiming to identify the key parameters affecting the packaging boxes when submitted to various conditions of temperature and relative humidity. The group is also involved in a research dealing with paper-based documents conservation during storage in libraries and museums. In this context, functional packaging expertise has been developed and aims to protect the documents under study against the surrounding polluting gases or those arising from their own degradation. Researches on RFID are also in progress and new active biopackaging have been prepared and analysed in the framework of an european project.
Some studies carried out in our group are presented in the next pages.
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