Item


Orange Wood Fiber Reinforced Polypropylene Composites: Thermal Properties

A major drawback of natural-based composites is the incorporation of reinforcements that are less thermally stable than the matrix; therefore, the thermal properties of the resultant composite material needs to be studied. In this work, orange wood fibers were used to reinforce polypropylene. The effects on the thermal properties of the polymeric matrix were analyzed. To this end, differential scanning calorimetry (DSC), thermogravimetry (TGA), thermomechanical analysis (TMA), and dynamic-mechanical analysis (DMA) were performed. It was found that the degradation of the material took place in two distinct phases: the reinforcement, close to 250 degrees C, and the matrix, above 340 degrees C. DSC results showed that fiber reinforcement did not influence the transition temperatures of the materials, although it did affect the polymer crystallinity value, increasing by 7% when the composite is reinforced with 50% of the lignocellulosic reinforcement. The coefficient of expansion obtained by TMA indicated that thermal expansion decreased as the amount of reinforcement increased. DMA assays showed that the reinforcement did not modify the glass transition (20 to 25 degrees C) temperature and confirmed that the addition of reinforcement increased the crystallinity of the product

The authors are grateful for the support of the EMCI - Ministerio de Ciencia e Innovacion (MICINN) for funding the research by the specific Research Program CTQ2010-21660-C03-03

North Carolina State University. Dept of Wood Paper Science, College of Natural Resources

Manager: Ministerio de Ciencia e Innovación (Espanya)
Author: Reixach Corominas, Rafel
Puig Serramitja, Josep
Méndez González, José Alberto
Gironès i Molera, Jordi
Espinach Orús, Xavier
Arbat Pujolràs, Gerard
Mutjé Pujol, Pere
Abstract: A major drawback of natural-based composites is the incorporation of reinforcements that are less thermally stable than the matrix; therefore, the thermal properties of the resultant composite material needs to be studied. In this work, orange wood fibers were used to reinforce polypropylene. The effects on the thermal properties of the polymeric matrix were analyzed. To this end, differential scanning calorimetry (DSC), thermogravimetry (TGA), thermomechanical analysis (TMA), and dynamic-mechanical analysis (DMA) were performed. It was found that the degradation of the material took place in two distinct phases: the reinforcement, close to 250 degrees C, and the matrix, above 340 degrees C. DSC results showed that fiber reinforcement did not influence the transition temperatures of the materials, although it did affect the polymer crystallinity value, increasing by 7% when the composite is reinforced with 50% of the lignocellulosic reinforcement. The coefficient of expansion obtained by TMA indicated that thermal expansion decreased as the amount of reinforcement increased. DMA assays showed that the reinforcement did not modify the glass transition (20 to 25 degrees C) temperature and confirmed that the addition of reinforcement increased the crystallinity of the product
The authors are grateful for the support of the EMCI - Ministerio de Ciencia e Innovacion (MICINN) for funding the research by the specific Research Program CTQ2010-21660-C03-03
Document access: http://hdl.handle.net/2072/296955
Language: eng
Publisher: North Carolina State University. Dept of Wood Paper Science, College of Natural Resources
Rights: Tots els drets reservats
Subject: Plàstics reforçats amb fibra -- Propietats tèrmiques
Fiber-reinforced plastics -- Thermal properties
Title: Orange Wood Fiber Reinforced Polypropylene Composites: Thermal Properties
Type: info:eu-repo/semantics/article
Repository: Recercat

Subjects

Authors


Warning: Unknown: write failed: No space left on device (28) in Unknown on line 0

Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/lib/php5) in Unknown on line 0