Raw material potential of recyclable materials for fiber composites: a review study

Keskisaari, Anna; Kärki, Timo

doi:10.1007/s10163-016-0511-2

Cited by 21 publications

(13 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, these works mainly focused on the modified fillers' impact on WPCs properties, without the analysis of their environmental impact. Nevertheless, health and safety issues should also be addressed, which will enable the optimization of fillers' modification and development of more environmentally friendly processes in the future (Doustmohammadi and Babazadeh 2019;Keskisaari and Kärki 2016;Quitadamo et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Insights into modification of lignocellulosic fillers with isophorone diisocyanate: structure, thermal stability and volatile organic compounds emission assessment

et al. 2020

View full text Add to dashboard Cite

This study presents an analysis of the structure and properties of different types of lignocellulosic fillers modified by isophorone diisocyanate (IPDI) to provide insights into the possibility of their application to the manufacturing of wood polymer composites (WPCs). Moreover, it deals with the environmental aspects of modified fillers, by assessment of volatile organic compounds (VOCs) emitted during modification, as well as from final products. Three types of commercially available lignocellulosic fillers were modified with different content of IPDI (from 1 to 15 wt%) using the internal mixer. The main compounds detected in the air during modifications were terpenes and terpenoids. No IPDI was detected, which is very beneficial considering its toxicity. On the other hand, IPDI was emitted from modified fillers at a slightly elevated temperature of 40 °C, which was associated with a significant rise in its vapor pressure. Successful modification of fillers was confirmed by FTIR spectroscopy and thermogravimetric analysis. Performed modifications of lignocellulosic fillers with IPDI had a relatively small impact on their particle size and color properties. Such an effect can be considered beneficial for the mechanical performance and appearance of WPCs, which could be potentially manufactured using IPDI-modified lignocellulosic fillers.

show abstract

Section: Introductionmentioning

confidence: 99%

Insights into modification of lignocellulosic fillers with isophorone diisocyanate: structure, thermal stability and volatile organic compounds emission assessment

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Composites have been used to replace many products made exclusively with petroleum derivatives, which represents a new approach in material development [3,4]. The possibility of using recycled materials to make composites is very attractive, especially with the large amount of wood fiber and plastic waste generated daily around the world [5].…”

Section: Introductionmentioning

confidence: 99%

Deterioration of Wood Plastics Composites by the White-Rot Fungus Pycnoporus sanguineus

et al. 2019

View full text Add to dashboard Cite

Wood plastic composites (WPC) are characterized by the mixing of wood fibers with plastics, allowing the production of new products whose characteristics are in several aspects superior to those of the original products and represent an expanding class of durable and low-cost materials in which their uses can reduce the environmental footprint and the dependence on petroleum products. Nevertheless, WPC has some setbacks, including biodegradation, which shortens its life span. In this study, the wood composite was exposed to the white-rot fungus Pycnoporus sanguineus in order to evaluate its resistance to biodegradation. The WPC was prepared with a 1:1 ratio of Eucalyptus spp. bark as reinforcement agent and polypropylene as matrix. Mechanical and rheological properties and mass loss were evaluated from 15 to 120 days of fungus exposure. After 15 days, a mass loss was detected, which transmitted a negligible effect on the impact resistance of the composite. For the 120-day fungus-exposed composite, the fungus produced a biofilm under the WPC that create a special environment for lignocellulosic consuming led to deterioration of the mechanical properties and minor changes on the thermal–chemical stability of the WPC. Finally, the study gave a great indication of the susceptibility of a Eucalyptus-based composite to biodegradation.

show abstract

“…These composite plastics have to be landfilled because they are difficult to separate by conventional mechanical and/or chemical recovery processes (Al-Salem et al, 2009 ; Astrup et al, 2009 ; Singh et al, 2017 ). Recent approaches for valorizing mixed PWs include mixing them with materials such as wood, cement, and ash to turn them into construction materials (Sardot et al, 2012 ; Sofi et al, 2019 ), printable paper-like composites (Fan et al, 2020 ), fiber composites (Keskisaari and Kärki, 2017 ), new polymers (Rahimi and Garciá, 2017 ), and polar waxes (Marek et al, 2015 ). Nanomaterials have also been prepared from single-polymer PW.…”

Section: Waste As Starting Materials For the Production Of Nanoparticmentioning

confidence: 99%

Waste-Derived Nanoparticles: Synthesis Approaches, Environmental Applications, and Sustainability Considerations

et al. 2020

View full text Add to dashboard Cite

For the past few decades, a plethora of nanoparticles have been produced through various methods and utilized to advance technologies for environmental applications, including water treatment, detection of persistent pollutants, and soil/water remediation, amongst many others. The field of materials science and engineering is increasingly interested in increasing the sustainability of the processes involved in the production of nanoparticles, which motivates the exploration of alternative inputs for nanoparticle production as well as the implementation of green synthesis techniques. Herein, we start by overviewing the general aspects of nanoparticle synthesis from industrial, electric/electronic, and plastic waste. We expand on critical aspects of waste identification as a viable input for the treatment and recovery of metal-and carbon-based nanoparticles. We follow-up by discussing different governing mechanisms involved in the production of nanoparticles, and point to potential inferences throughout the synthesis processes. Next, we provide some examples of waste-derived nanoparticles utilized in a proof-of-concept demonstration of technologies for applications in water quality and safety. We conclude by discussing current challenges from the toxicological and life-cycle perspectives that must be taken into consideration before scale-up manufacturing and implementation of waste-derived nanoparticles.

show abstract

Raw material potential of recyclable materials for fiber composites: a review study

Cited by 21 publications

References 50 publications

Insights into modification of lignocellulosic fillers with isophorone diisocyanate: structure, thermal stability and volatile organic compounds emission assessment

Insights into modification of lignocellulosic fillers with isophorone diisocyanate: structure, thermal stability and volatile organic compounds emission assessment

Deterioration of Wood Plastics Composites by the White-Rot Fungus Pycnoporus sanguineus

Waste-Derived Nanoparticles: Synthesis Approaches, Environmental Applications, and Sustainability Considerations

Contact Info

Product

Resources

About