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Recycled polypropylene for food contact: employment of a-C:H thin films by plasma deposition and degradation in the presence of contaminants

Abstract

In this project, initially the clarified polypropylene will be contaminated with a series of contaminants stipulated by FDA. After that the samples will be recovered and reprocessed by extrusion. Different chemical structures of a-C:H thin films (diamond like carbon and polymer like carbon) are evaluated as functional barrier. The thin films will be deposited by Plasma Enhanced Chemical Vapor Deposition (PECVD). The chemical structure will be evaluated by infrared reflection-absorption spectroscopy and RAMAN. Before the deposition processes, the samples will be treated with oxygen plasma and the superficial modification evaluated by contact angle as well as atomic force microscopy. The functional barrier will be evaluated by migration tests. At a later stage, the influence of the presence of contaminants as well as the a-C:H films on the degradation of clarified PP during the recycling process will be analysed. The degradation will be evaluated by DSC, OIT, TGA, DMTA and parallel plate rheometry. (AU)

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Scientific publications (8)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
VERONEZE, ISABELLY BERTOCHI; ONOUE, LETICIA AKEMI; CRUZ, SANDRA ANDREA. Thermal Stability and Crystallization Behavior of Contaminated Recycled Polypropylene for Food Contact. JOURNAL OF POLYMERS AND THE ENVIRONMENT, v. N/A, p. 9-pg., . (16/25703-2, 17/24316-8)
FITARONI, LAYS B.; CACURO, THIAGO A.; COSTA, CARLOS A. R.; LANZONI, EVANDRO M.; GALANTE, DOUGLAS; ARAUJO, JOYCE R.; HOMEM, MANOEL G. P.; WALDMAN, WALTER R.; CRUZ, SANDRA A.. Polymeric nanowrinkles: surface modification of polypropylene films in the VUV energy range. Journal of Materials Science, v. 56, n. 15, p. 9532-9543, . (15/08258-2, 16/24936-3, 16/25703-2)
DE LIMA, JULIANA A.; FITARONI, LAYS B.; WALDMAN, WALTER R.; CRUZ, SANDRA A.. Compatibilizer prevents the catalytic role of sepiolite in the thermal degradation of PP/Sep nanocomposites. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, v. 146, n. 6, p. 2481-2487, . (16/24936-3, 16/25703-2)
PAIVA, ROBERT; WRONA, MAGDALENA; NERIN, CRISTINA; VERONEZE, ISABELLY BERTOCHI; GAVRIL, GEORGIANA-LUMINITA; CRUZ, SANDRA ANDREA. Importance of profile of volatile and off-odors compounds from different recycled polypropylene used for food applications. Food Chemistry, v. 350, . (16/25703-2)
PAIVA, ROBERT; VERONEZE, ISABELLY BERTOCHI; WRONA, MAGDALENA; NERIN, CRISTINA; CRUZ, SANDRA ANDREA. he Role of Residual Contaminants and Recycling Steps on Rheological Properties of Recycled Polypropylen. JOURNAL OF POLYMERS AND THE ENVIRONMENT, v. 30, n. 2, . (16/25703-2)
DE LIMA, JULIANA A.; FITARONI, LAYS B.; WALDMAN, WALTER R.; CRUZ, SANDRA A.. Compatibilizer prevents the catalytic role of sepiolite in the thermal degradation of PP/Sep nanocomposites. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, . (16/24936-3, 16/25703-2)
PAIVA, ROBERT; WRONA, MAGDALENA; NERIN, CRISTINA; CRUZ, SANDRA ANDREA. Hydrogenated amorphous carbon film deposited by plasma on recycled polypropylene as a functional barrier to hazardous migrants. FOOD PACKAGING AND SHELF LIFE, v. 33, p. 10-pg., . (16/25703-2)
PAIVA, ROBERT; VERONEZE, ISABELLY BERTOCHI; WRONA, MAGDALENA; NERIN, CRISTINA; CRUZ, SANDRA ANDREA. The Role of Residual Contaminants and Recycling Steps on Rheological Properties of Recycled Polypropylene. JOURNAL OF POLYMERS AND THE ENVIRONMENT, v. 30, n. 2, p. 10-pg., . (16/25703-2)

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Filed patent(s) as a result of this research project

COMPÓSITOS DE POLIOLEFINAS E SEMICONDUTORES À BASE DE PRATA COM ALTA ATIVIDADE BIOCIDA BR1020210212632 - Fundação Universidade Federal de São Carlos (UFSCar) ; Universidade Estadual Paulista Júlio de Mesquita Filho (Unesp) ; Universitat Jaume I (Espanha) . LARA KELLY RIBEIRO DA SILVA (UFSCar) ; LAIS RONCALHO LIMA (UFSCar) ; MARCELO DE ASSIS (UFSCar) ; MARIANA OTTAIANO GONÇALVES (UFSCar) ; CRISTINA PAIVA DE SOUSA (UFSCar) ; DYOVANI COELHO (UFSCar) ; LUCIA HELENA MASCARO (UFSCar) ; ELSON LONGO DA SILVA (UFSCar) ; JUAN MANOEL ANDRÉS BORT (Jaime I) ; IEDA LUCIA VIANA ROSA (UFSCar) ; ROBERT DA SILVA PAIVA (UFSCar) ; SANDRA ANDREA CRUZ (UFSCar) ; LEONARDO NAZARIO DE MORAES (UNESP) ; LUANA FOGAÇA DE ALMEIDA (UNESP) e REJANE MARIA TOMMASINI GROTTO (UNESP). - October 2021, 22