Degradation of Polypropylene and Jute Fiber-Reinforced Composites Exposed to Natural and Accelerated Aging: Mechanical Properties and Wettability

Population growth and the way resources are being exploited are directly affecting the environment. The natural fiber market, for example, is worth billions of dollars and a huge amount of the fibers becomes waste. This considerable amount of waste motivates the study of the fibers as a reinforcemen...

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Bibliographic Details
Published in:Chemistry an international journal 2021-12, Vol.3 (4), p.1392-1400
Main Authors: Sanvezzo, Paula Bertolino, Negreiros, Fernanda Pereira de Castro, Branciforti, Marcia Cristina
Format: Article
Language:English
Subjects:
accelerated weathering
Aging
Aging (natural)
Calcium carbonate
Composite materials
Composition
Contact angle
Decomposition
Degradation
Elastic deformation
Fiber composites
Fiber reinforced polymers
Fibers
industrial waste
Industrial wastes
Infrared analysis
infrared spectroscopy
Jute
Mechanical properties
Modulus of elasticity
natural fiber
natural weathering
Polymer matrix composites
Polymers
Polypropylene
Population growth
recycling
Software
Spectrum analysis
Tensile tests
Thermogravimetric analysis
Waterproofing
Wettability
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Summary:Population growth and the way resources are being exploited are directly affecting the environment. The natural fiber market, for example, is worth billions of dollars and a huge amount of the fibers becomes waste. This considerable amount of waste motivates the study of the fibers as a reinforcement in polymeric matrix, which benefits both the environmental sustainability and technical-commercial development of new materials with good properties and reduced cost. In this study, jute fiber-reinforced composites previously manufactured from an industrial waste (W), polypropylene, compatibilizer, and nano-calcium carbonate (N), were exposed to natural and accelerated aging. The composites were tested by infrared spectroscopy, contact angle (CA) measurement, and tensile test. Infrared analysis showed greater oxidative degradation after accelerated aging. All CA values continued above 90° after natural aging. Among all compositions, the ones with the presence of N had the highest CA values, showing that N acted as a waterproofing agent. After accelerated aging, a significant decrease in all CA values was observed. The composites did not show significant variation in the elastic modulus after either aging. Deformation at break decreased significantly for compositions with no jute fiber in both aging programs. No remarkable reduction was observed in the compositions with jute fibers.
ISSN:2624-8549
2624-8549
DOI:10.3390/chemistry3040100