Gas dissolution foaming as a novel approach for the production of lightweight biocomposites of PHB/natural fibre fabrics
The aim of this study is to propose and explore a novel approach for the production of cellular lightweight natural ¿bre, nonwoven, fabric-reinforced biocomposites by means of gas dissolution foaming from composite precursors of polyhydroxybutyrate-based matrix and ¿ax fabric reinforcement. The main...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2018 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/115110 |
| Acceso en línea: | https://hdl.handle.net/2117/115110 https://dx.doi.org/10.3390/polym10030249 |
| Access Level: | acceso abierto |
| Palabra clave: | Biopolymers Composite materials Textile fibers--Technological innovations Biopolymer Biocomposite Fabric reinforcement Natural fibres Foaming Teixits i tèxtils -- Innovacions tecnològiques Biopolímers Materials compostos Fibres tèxtils -- Innovacions tecnològiques Àrees temàtiques de la UPC::Enginyeria tèxtil::Fibres tèxtils Àrees temàtiques de la UPC::Enginyeria dels materials |
| Sumario: | The aim of this study is to propose and explore a novel approach for the production of cellular lightweight natural ¿bre, nonwoven, fabric-reinforced biocomposites by means of gas dissolution foaming from composite precursors of polyhydroxybutyrate-based matrix and ¿ax fabric reinforcement. The main challenge is the development of a regular cellular structure in the polymeric matrix to reach a weight reduction while keeping a good ¿bre-matrix stress transfer and adhesion. The viability of the process is evaluated through the analysis of the cellular structure and morphology of the composites. The effect of matrix modi¿cation, nonwoven treatment, expansion temperature, and expansion pressure on the density and cellular structure of the cellular composites is evaluated. It was found that the nonwoven fabric plays a key role in the formation of a uniform cellular morphology, although limiting the maximum expansion ratio of the composites. Cellular composites with a signi¿cant reduction of weight (relative densities in the range 0.4–0.5) were successfully obtained |
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