Studies of Resistance of PP/Natural Filler Polymer Composites to Decomposition Caused by Fungi

Włodarczyk-Fligier, A.; Polok-Rubiniec, M.

doi:10.3390/ma14061368

Cited by 5 publications

(10 citation statements)

References 22 publications

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“…[33][34][35] Therefore, the use of WS in WPCs can not only partially alleviate the wood shortage in some walnut-rich countries, but also produce some benefits in the environmental and socio-economic fields. 36,37 Zheng et al 38 studied the effects of WS powder on the morphology, thermal properties, and mechanical properties of PLA. It was found that the tensile strength, impact strength, and elongation at break of PLA/WS composites increased at first and then decreased with the increase of WS powder.…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of PVC composites filled with walnut shell powder hybrid attapulgite

Yang,

Zhang,

Chen

et al. 2023

Vinyl Additive Technology

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In order to reveal the effect of alkali treatment of walnut shell (WS) powder and attapulgite (ATP) hybrid filling on the properties of WS/polyvinyl chloride (PVC) composites, and to compare the effects of different reinforcement methods, WS/PVC composites were prepared by single screw melt extrusion. Furthermore, analysis was conducted on the chemical composition, thermal stability, microstructure, and physical, mechanical and wear resistance properties of composites. The results showed that ATP hybrid can enhance the performance of WPC more effectively than alkali treatment, unmodified WS blended with ATP composites have the best physical, mechanical properties, abrasive wear resistance, as well as lower water absorption, compared with the untreated, the tensile strength, bending strength and impact strength increased by 24%, 8%, and 21%, respectively. In addition, the composites of ATP hybrid alkali treated WS have the best thermal stability, and its pyrolysis residue is 15.64% higher than untreated composites. The study found that ATP have a larger potential to enhance the properties of composites than alkali treatment.Highlights Chemical treatment and inorganic mineral particle filling were used to enhance the properties of the WS/PVC composites. The experimental results showed that attapulgite can maximize the properties of the composites without alkali treatment. This means that attapulgite filling is a more effective and environmentally friendly and simple method to enhance the properties of composites than alkali treatment. The wear failure modes of the composites are mainly micro‐indentation and micro‐cutting.

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Section: Introductionmentioning

confidence: 99%

Preparation and properties of PVC composites filled with walnut shell powder hybrid attapulgite

Yang,

Zhang,

Chen

et al. 2023

Vinyl Additive Technology

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“…HNS can be used for various applications such as energy, 4,5 biofuel production, 6 active carbon production, 7,8 adsorption, 9,10 waste water treatment, 11 civil engineering applications, 12,13 and polymeric composites. [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] In all these applications generally, it is mechanically powderized in various sizes. Since the green and sustainable material requirement is increasing, number of the research in the area of HNS filled polymer composite production has been increasing.…”

Section: Introductionmentioning

confidence: 99%

“…Since the green and sustainable material requirement is increasing, number of the research in the area of HNS filled polymer composite production has been increasing. Hazelnut shells based composites were prepared by using thermoplastics such as PP, [14][15][16][17][18] polyethylene, 16,19 polylactic acid (PLA), 2,[20][21][22] polymethylmethacrylate, 23 and thermosets including epoxy, 2,[20][21][22] urea formaldehyde, 24 polyester. [25][26][27] In addition to these, HNS filled polyurethane (PU) rigid foams 28 were also reported in the literature.…”

Section: Introductionmentioning

confidence: 99%

Bio-based sustainable composites from hazelnut shell and PP/SEBS blends

Cetin

Ipek

Fidan

et al. 2022

Journal of Thermoplastic Composite Materials

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In this study, waste hazelnut shells (HNS) were powderized and used as the filler for the fabrication of sustainable polymeric composites. HNS based composites can be used for many applications because of their tunable intrinsic brown color for various indoor and outdoor applications including decking applications and furniture that require a natural esthetic appearance. Polypropylene (PP), styrene-b-(ethylene-co-butylene)-b-styrene (SEBS), and 50/50 PP/SEBS blends were used as the polymeric matrixes. HNS concentration was set to 2.5, 5, and 10 wt%. PP/SEBS blend and HNS filled granules were prepared by melt mixing in an extruder. Following that polymeric films were fabricated from the granules by compression molding. The morphological, structural, thermal, mechanical, contact angle, water absorption analyses were performed in order to characterize the composites. Matrix type and filler concentration were found significant for the properties. PP/SEBS blends showed homogeneous morphology. At low concentrations, fillers were well-dispersed. On the other hand, at 10 wt% HNS loading agglomerations were observed and mechanical properties showed a noticeable drop. PP-based composites showed the highest tensile strength and elastic modulus with the lowest tensile strain. SEBS-based composites showed the lowest tensile strength and elastic modulus with the highest tensile strain. PP/SEBS composites showed mechanical properties between PP and SEBS. The incorporation of SEBS into PP increased the flexibility of the composites and resulted in relatively higher strain at break.

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“…They are characterized by good mechanical properties, stiffness, ease of processing, no need for impregnation, and a relatively low price. Moreover, the use of lignocellulosic filler makes this material partially biodegradable [ 4 , 5 , 6 , 7 , 8 ]. WPCs have enormous application potential.…”

Section: Introductionmentioning

confidence: 99%

“…The presence of lignocellulosic fibers, especially on the surface of the material, makes WPCs very susceptible to the action of microorganisms including fungi. Many works have demonstrated the negative influence of this destructive factor on the structure and properties of WPCs [ 7 , 18 , 19 , 20 , 21 ]. It has been shown that the action of fungi mainly causes the decomposition of the lignocellulosic component, which can be observed indirectly in the weight loss of the sample.…”

Section: Introductionmentioning

confidence: 99%

Bioactive Propolis-Silane System as Antifungal Agent in Lignocellulosic-Polymer Composites

et al. 2022

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Polymer composites with renewable lignocellulosic fillers, despite their many advantages, are susceptible to biodegradation, which is a major limitation in terms of external applications. The work uses an innovative hybrid propolis-silane modifier in order to simultaneously increase the resistance to fungal attack, as well as to ensure good interfacial adhesion of the filler–polymer matrix. Polypropylene composites with 30% pine wood content were obtained by extrusion and pressing. The samples were exposed to the fungi: white-rot fungus Coriolus versicolor, brown-rot fungus Coniophora puteana, and soft-rot fungus Chaetomium globosum for 8 weeks. Additionally, biological tests of samples that had been previously exposed to UV radiation were carried out, which allowed the determination of the influence of both factors on the surface destruction of composite materials. The X-ray diffraction, attenuated total reflectance–Fourier transform infrared spectroscopy, and mycological studies showed a significant effect of the modification of the lignocellulose filler with propolis on increasing the resistance to fungi. Such composites were characterized by no changes in the supermolecular structure and slight changes in the intensity of the bands characteristic of polysaccharides and lignin. In the case of systems containing pine wood that had not been modified with propolis, significant changes in the crystalline structure of polymer composites were noted, indicating the progress of decay processes. Moreover, the modification of the propolis-silane hybrid system wood resulted in the inhibition of photo- and biodegradation of WPC materials, as evidenced only by a slight deterioration in selected strength parameters. The applied innovative modifying system can therefore act as both an effective and ecological UV stabilizer, as well as an antifungal agent.

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Studies of Resistance of PP/Natural Filler Polymer Composites to Decomposition Caused by Fungi

Cited by 5 publications

References 22 publications

Preparation and properties of PVC composites filled with walnut shell powder hybrid attapulgite

Preparation and properties of PVC composites filled with walnut shell powder hybrid attapulgite

Bio-based sustainable composites from hazelnut shell and PP/SEBS blends

Bioactive Propolis-Silane System as Antifungal Agent in Lignocellulosic-Polymer Composites

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