Next Article in Journal
The Effect of Heat Treatment on the Emission Color of P-Doped Ca2SiO4 Phosphor
Next Article in Special Issue
Bonding Behavior of Deformed Steel Rebars in Sustainable Concrete Containing both Fine and Coarse Recycled Aggregates
Previous Article in Journal
Preparation of Desirable Porous Cell Structure Polylactide/Wood Flour Composite Foams Assisted by Chain Extender
Previous Article in Special Issue
Hot Press as a Sustainable Direct Recycling Technique of Aluminium: Mechanical Properties and Surface Integrity
Article Menu
Issue 9 (September) cover image

Export Article

Open AccessArticle
Materials 2017, 10(9), 998; doi:10.3390/ma10090998

Green Composites Based on Blends of Polypropylene with Liquid Wood Reinforced with Hemp Fibers: Thermomechanical Properties and the Effect of Recycling Cycles

1
Department of Civil Engineering and Architecture, University of Catania, Viale Andrea Doria 6, Catania 95125, Italy
2
Design and Production Engineering Department, Faculty of Engineering, Ain Shams University, 1 Assarayat St., Abbasiya, Al Waili, Cairo Governorate 1153, Egypt
3
Institute of Polymer Materials and Plastics Engineering, Clausthal University of Technology, Agricolastr. 6, Clausthal-Zellerfeld 38678, Germany
4
Institute for Polymers, Composites and Biomaterials, National Research Council, Via Campi Flegrei 34, Pozzuoli 80078, Italy
*
Authors to whom correspondence should be addressed.
Received: 20 July 2017 / Revised: 22 August 2017 / Accepted: 23 August 2017 / Published: 26 August 2017
(This article belongs to the Special Issue Recycled Materials, Eco-design and 3D Printing)
View Full-Text   |   Download PDF [4953 KB, uploaded 26 August 2017]   |  

Abstract

Green composites from polypropylene and lignin-based natural material were manufactured using a melt extrusion process. The lignin-based material used was the so called “liquid wood”. The PP/“Liquid Wood” blends were extruded with “liquid wood” content varying from 20 wt % to 80 wt %. The blends were thoroughly characterized by flexural, impact, and dynamic mechanical testing. The addition of the Liquid Wood resulted in a great improvement in terms of both the flexural modulus and strength but, on the other hand, a reduction of the impact strength was observed. For one blend composition, the composites reinforced with hemp fibers were also studied. The addition of hemp allowed us to further improve the mechanical properties. The composite with 20 wt % of hemp, subjected to up to three recycling cycles, showed good mechanical property retention and thermal stability after recycling. View Full-Text
Keywords: Polymer-matrix composites (PMCs); mechanical properties; injection molding; recycling Polymer-matrix composites (PMCs); mechanical properties; injection molding; recycling
Figures

Figure 1a

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Cicala, G.; Tosto, C.; Latteri, A.; La Rosa, A.D.; Blanco, I.; Elsabbagh, A.; Russo, P.; Ziegmann, G. Green Composites Based on Blends of Polypropylene with Liquid Wood Reinforced with Hemp Fibers: Thermomechanical Properties and the Effect of Recycling Cycles. Materials 2017, 10, 998.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top