Impact of stone ground ‘V-fines’ dispersion and compatibilization on polyethylene wood plastic composites
| Autor: | Ilkka Nurminen, Jari Sirviö, Erkki Saharinen, David Sandquist, Kirsi Immonen |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Environmental Engineering
Materials science WPC Bioengineering Young's modulus engineering.material chemistry.chemical_compound symbols.namesake Wood polymer composites Pulp fines Flexural strength Ultimate tensile strength Composite material Mechanical pulp manufacturing Waste Management and Disposal Composites Pulp (paper) Compatibilization Polyethylene chemistry Fines material visual_art Short fiber composites symbols engineering visual_art.visual_art_medium Sawdust Biocomposite |
| Zdroj: | Immonen, K, Saharinen, E, Nurminen, I, Sirviö, J & Sandquist, D 2020, ' Impact of stone ground 'V-fines' dispersion and compatibilization on polyethylene wood plastic composites ', BioResources, vol. 15, no. 3, pp. 6561-6575 . < https://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_15_3_6561_Immonen_Impact_Stone_Ground_Dispersion/7868 > |
| ISSN: | 1930-2126 |
| DOI: | 10.15376/biores.15.3.6561-6575 |
| Popis: | Recent studies have suggested that blocky mechanical pulp fines (CTMP fines) and fibrillar fines (SMC fines) have a negative impact on biocomposite modulus of rupture (MoR) in compression molded biocomposites. In addition, it was suggested that CTMP fines also have a negative impact on biocomposite modulus of elasticity (MoE). This study investigated whether these findings transfer to other types of cellulose fines material and injection molding. The effect of ‘V-fines’ addition to sawdust- and TMP-based biocomposites was analyzed, with respect to fines concentration, dispersing agent, and compatibilizers. The results indicated that the addition of ‘V-fines’ increased the stiffness (MoE) of all the analyzed compositions, while reducing the elongation at break. The addition of ‘V-fines’ reduced the tensile and flexural strength of TMP biocomposites, while it was largely unaffected for sawdust biocomposites. Flexural strength for neat ‘V-fines’ composites showed an increase that was proportional to the remaining pulp fibers composition. The addition of a dispersant agent to the ‘V-fines’ increased tensile strength, suggesting that an increased dispersion of the ‘V-fines’ can be achieved and is beneficial to the composite. The effects of the analyzed compatibilizer (polyethyleneoxide) was negligible, except for a small indication of increased MoE for fines / sawdust biocomposites. |
| Databáze: | OpenAIRE |
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