Due to their peculiar sealing properties, their low cost and low reactivity, polyolefins are the plastics most frequently used as food contact materials. The principal limit of their use is the easy degradation due to thermo- and/or photo-oxidation at all stages of their life cycle, i.e. during processing, storage, and use. In fact, polyolefins are usually stabilized by melt blending with additives, such as free radical scavengers and anti-UV filters, to inhibit or retard degradation. Commonly used stabilizers are relatively low molecular weight polar compounds (i.e. BHA, BHT and HALS) very different from the apolar polyolefinic matrix. This causes several disadvantages such as: i) poor stabilizer/polyolefin compatibility; ii) stabilizers physical loss by migration and iii) food contamination. We propose the design and synthesis of monomers bearing stabilizing functionalities, inspired to BHT, BHA or HALS, and their copolymerization with ethylene or propylene to obtain non-releasing polymeric additives (1-3). These macromolecular additives will be used as stabilizers for the preparation of polyolefinic materials required in food, pharmaceutical and biomedical packaging with low risk of degradation and contamination. (1) Stagnaro, P.; Mancini, G.; Piccinini, A.; Losio, S.; Sacchi, M. C.; Viglianisi, C.; Menichetti, S.; Adobati, A.; Limbo, S. Journal of Polymer Science, Part B: Polymer Physics, 2013, 51, 1007-1016. (2) Sacchi, M. C.; Losio, S.; Stagnaro, P.; Menichetti, S.; Viglianisi, C. Macromolecular Reaction Engineering, 2013, 7, 84-90. (3) Viglianisi, C.; Menichetti, S; Assanelli, G.; Sacchi, M. C.; Tritto, I.; Losio, S. Journal of Polymer Science, Part A: Polymer Chemistry, 2012, 50, 4647-4655.

Macromolecular Non-Releasing Additives for Safer Food Packaging / Ceccherini, F; Menichetti, S; Viglianisi, C; Losio, S; Sacchi, M C; Mancini, G; Stagnaro, P; Adobati, A; Limbo, S. - ELETTRONICO. - (2013), pp. 0-0. (Intervento presentato al convegno XXXV Convegno Nazionale della divisione di Chimica Organica della SCI tenutosi a Sassari nel 09-13/09/2013).

Macromolecular Non-Releasing Additives for Safer Food Packaging

MENICHETTI, STEFANO;VIGLIANISI, CATERINA;
2013

Abstract

Due to their peculiar sealing properties, their low cost and low reactivity, polyolefins are the plastics most frequently used as food contact materials. The principal limit of their use is the easy degradation due to thermo- and/or photo-oxidation at all stages of their life cycle, i.e. during processing, storage, and use. In fact, polyolefins are usually stabilized by melt blending with additives, such as free radical scavengers and anti-UV filters, to inhibit or retard degradation. Commonly used stabilizers are relatively low molecular weight polar compounds (i.e. BHA, BHT and HALS) very different from the apolar polyolefinic matrix. This causes several disadvantages such as: i) poor stabilizer/polyolefin compatibility; ii) stabilizers physical loss by migration and iii) food contamination. We propose the design and synthesis of monomers bearing stabilizing functionalities, inspired to BHT, BHA or HALS, and their copolymerization with ethylene or propylene to obtain non-releasing polymeric additives (1-3). These macromolecular additives will be used as stabilizers for the preparation of polyolefinic materials required in food, pharmaceutical and biomedical packaging with low risk of degradation and contamination. (1) Stagnaro, P.; Mancini, G.; Piccinini, A.; Losio, S.; Sacchi, M. C.; Viglianisi, C.; Menichetti, S.; Adobati, A.; Limbo, S. Journal of Polymer Science, Part B: Polymer Physics, 2013, 51, 1007-1016. (2) Sacchi, M. C.; Losio, S.; Stagnaro, P.; Menichetti, S.; Viglianisi, C. Macromolecular Reaction Engineering, 2013, 7, 84-90. (3) Viglianisi, C.; Menichetti, S; Assanelli, G.; Sacchi, M. C.; Tritto, I.; Losio, S. Journal of Polymer Science, Part A: Polymer Chemistry, 2012, 50, 4647-4655.
2013
XXXV Convegno della Divisione di Chimica Organica
XXXV Convegno Nazionale della divisione di Chimica Organica della SCI
Sassari
Ceccherini, F; Menichetti, S; Viglianisi, C; Losio, S; Sacchi, M C; Mancini, G; Stagnaro, P; Adobati, A; Limbo, S
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1055039
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