Search results for "Green composites"

SVILUPPO DI SISTEMI CON STRUTTURE COMPLESSE A BASE BIOPOLIMERICA REALIZZATI ATTRAVERSO PROCESSI COMBINATI IN MULTI- O IN ONE-STEP

2022

L'analisi dello stato dell'arte suggerisce che la combinazione di processi di produzione, solitamente impiegati per l’elaborazione di strutture differenti, comporta la produzione di dispositivi a base biopolimerica con strutture complesse e proprietà rilevanti. L'obiettivo di questo lavoro di ricerca è stato quello di esplorare i diversi vantaggi dei metodi di elaborazione combinati sia in one-step che in two-steps. In particolare, sono state testate diverse combinazioni di processing al fine di ottenere dispositivi a base biopolimerica con strutture e proprietà non ottenibili da singoli processi, trattamenti o materiali. Ogni dispositivo è stato caratterizzato al fine di comprendere le rel…

3D PRINTED GREEN COMPOSITES BASED ON POLYMERIC MATRICES AND ANCHOVY FISHBONE WASTES

VALORIZATION OF ANCHOVY FISHBONE WASTES FOR THE PREPARATION OF BIOPOLYMERIC BASED GREEN COMPOSITES FOR FOOD PACKAGING APPLICATIONS

Hedysarum coronarium-Based Green Composites Prepared by Compression Molding and Fused Deposition Modeling

2022

In this work, an innovative green composite was produced by adding Hedysarum coronarium (HC) flour to a starch-based biodegradable polymer (Mater-Bi®, MB). The flour was obtained by grinding together stems, leaves and flowers and subsequently sieving it, selecting a fraction from 75 μm to 300 μm. Four formulations have been produced by compression molding (CM) and fused deposition modeling (FDM) by adding 5%, 10%, 15% and 20% of HC to MB. The influence of filler content on the processability was tested, and rheological, morphological and mechanical properties of composites were also assessed. Through CM, it was possible to obtain easily homogeneous samples with all filler amounts.…

GREEN COMPOSITES BASED ON BIODEGRADABLE POLYMERS AND WOOD FLOUR

2010

Green Composites Based on Mater-Bi® and Solanum lycopersicum Plant Waste for 3D Printing Applications

2023

3D printability of green composites is currently experiencing a boost in importance and interest, envisaging a way to valorise agricultural waste, in order to obtain affordable fillers for the preparation of biodegradable polymer-based composites with reduced cost and environmental impact, without undermining processability and mechanical performance. In this work, an innovative green composite was prepared by combining a starch-based biodegradable polymer (Mater-Bi®, MB) and a filler obtained from the lignocellulosic waste coming from Solanum lycopersicum (i.e., tomato plant) harvesting. Different processing parameters and different filler amounts were investigated, and the obtained sample…

Effect of Stacking Sequence and Sodium Bicarbonate Treatment on Quasi-Static and Dynamic Mechanical Properties of Flax/Jute Epoxy-Based Composites

2019

The present paper deals with the investigation of quasi-static and dynamic mechanical response of epoxy-based composites reinforced with flax and/or jute plain weave fabrics. In order to evaluate the influence of the stacking sequence, two monolithic laminates reinforced with flax or jute fibers and two hybrid flax/jute laminates were manufactured through the vacuum infusion technique. Furthermore, an eco-friendly and cost-effective surface treatment based on fiber soaking in a sodium bicarbonate solution was employed to improve the fiber-matrix adhesion. The mechanical characterization (by means of quasi-static flexural, dynamic mechanical thermal analysis and Charpy impact tests) allowed …