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Abstract

The preliminary stage of asphalt mixture production involves the drying and dedusting of coarse aggregates. The most common types of coarse aggregates used are limestone and basalt. In the process of drying and dedusting the dryer filter accumulates large quantities of waste in the form of mineral powder.

This paper introduces an investigation into limestone powder waste as a potential microfiller of polymer composites. Physical characteristics such as the granulation the of powder collected from the filter - in terms of the season of its collection and the type of input materials used - were analysed. A scanning electron microscope (SEM) was used for the investigation described within this paper. The obtained results were compared against those of other materials which can be used as polymer composites microfillers.

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Authors and Affiliations

M. Kępniak
P. Woyciechowski
W. Franus
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Abstract

In this research, Graphene nanoplatelets (GNP) reinforced epoxy nano composites were fabricated via magnetic stirrer and ultra sonification assisted hand layup method. The impact of different weight percentage of GNP (0, 0.25, 0.50, and 1.0%) on different characteristics of nano composites was evaluated. The microstructure analysis of developed nano composite was determined by Field emission scanning electron microscopy. It was examined that epoxy nano composites containing 0.5 wt.% GNP have the highest tensile, flexural, and impact strength compared to neat epoxy. The reduction in tensile and flexural strength is achieved at 1% of GNP. Adding more nanofiller to a certain limit causes non-uniform dispersion and agglomeration of nanoparticles, which results in a reduction in properties. The 1% GNP reinforced nano composite has the highest value of shore hardness.
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Authors and Affiliations

A. Namdev
1
ORCID: ORCID
R. Purohit
1
A. Telang
1
A. Kumar
1

  1. Maulana Azad National Institute of Technology, Department of Mechanical Engineering Bhopa l, Madhya Pradesh, India
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Abstract

Halloysite is a filler which may be used to produce composites with thermoplastic polymer matrix. This work summarized the results of investigations of processing, structural, mechanical, and thermal properties of the composites with poly(vinyl chloride) (PVC) matrix and raw halloysite (HA) as well as its calcined product (KHA). The effectiveness of calcination was confirmed with X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, and nitrogen adsorption method. The PVC composites with HA as well as KHA were processed in the molten state in the Brabender mixer chamber. The reduction of gelation time and simultaneous increase in maximum torque with filler content were found based on the results of plastographometric analysis. SEM images of PVC/halloysite composites showed a homogeneous distribution of the filler in the polymer matrix. The introduction of halloysite leads to a slight increase in Young’s modulus and tensile strength compared to neat PVC, where the increase of both parameters is greater when KHA is used. The incorporation of 1% KHA led to an increase in impact strength, an effect which may be attributed to toughening of the polymer. A slight improvement of the Vicat softening temperature of 2.7°C for PVC/HA and heat deflection temperature of 2.4°C for PVC/KHA was also ascertained for PVC modified with 10 wt% of filler.
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Authors and Affiliations

Martina Wieczorek
1
ORCID: ORCID
Jolanta Tomaszewska
1
ORCID: ORCID
Tomasz Bajda
2
ORCID: ORCID
Jacek Długosz
3
ORCID: ORCID

  1. Bydgoszcz University of Science and Technology, Faculty of Chemical Technology and Engineering, Al. Prof. S. Kaliskiego 7, 85-796 Bydgoszcz, Poland
  2. AGH University of Science and Technology, Faculty of Geology, Geophysics and Environmental Protection, Al. A. Mickiewicza 30, 30-059, Kraków, Poland
  3. Bydgoszcz University of Science and Technology, Faculty of Agriculture and Biotechnology, Al. Prof. S. Kaliskiego 7, 85-796 Bydgoszcz, Poland
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Abstract

The article presents the results of research concerning the effect of anthracite dust with 10%, 20%, 30%, 40% and 50% content in composites with a polypropylene matrix on selected properties. Hardness was examined with the Shore’s D method; stiffness, tensile strength as well as (MFR) Melt Flow Rate and (MVR) Melt Volume Rate of the investigated material were evaluated; wettability of the obtained material was also determined. Surface and volume resistivity were also investigated; the thermal properties of the filler were determined by thermogravimetric analysis (TGA). It was found that the investigated polypropylene composites filled with anthracite dust are hydrophobic materials and the composite hardness and stiffness are growing along with the volumetric increase of anthracite. It was noted that anthracite reinforces the material to a limited extent.

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Authors and Affiliations

M. Polok-Rubiniec
A. Włodarczyk-Fligier
B. Chmielnicki
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Abstract

Ultra-High Molecular Weight Polyethylene (UHMWPE) polymers have been used in biomedical applications due to its biocompatibility, durability, toughness and high wear resistance. To enhance the mechanical properties, various types of minerals are commonly utilized as fillers in UHMWPE. One of the minerals is dolomite, which has been recognized as a valuable mineral with versatile applications, particularly in the field of biomedical applications. This paper presents the tensile properties of UHMWPE composites that filled with dolomite and treated-dolomite at various filler loading (i.e., 1-5 wt.%). Nitric acid and diammonium phosphate were used to treat the dolomite. From the results, the peaks of the FTIR spectrum displays carbonate (CO3–2), phosphate (PO4–3) and hydroxyl (OH) groups in the ct-dolomite powder sample while the XRD pattern reveals that using dolomite treated with 1M nitric acid resulted in the presence of calcium hydroxide phosphate (Ca10(PO4)5(OH)) and MgO. For tensile strength, UHMWPE/ct-dolomite composites show better tensile strength than the pure UHMWPE composites. Treated improve the dolomite filler and resulted in significantly better matrix-filler interfacial interactions and improve the properties.
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Authors and Affiliations

S.F.A. Abdullah
1
ORCID: ORCID
S.S. Md Saleh
1
N.F Mohammad
ORCID: ORCID
S.N. Syed Mahamud
1
ORCID: ORCID
M.F. Omar
2
ORCID: ORCID
H.Md Akil
3
ORCID: ORCID
B.P Chang
ORCID: ORCID
H.R Saliu
ORCID: ORCID
N.H. Rostam
2
ORCID: ORCID
J. Gondro
4

  1. Universiti Malaysia Perlis, Faculty of Chemical Engineering & Technology, Kompleks Pusat Pengajian Jejawi 2, 02600 Arau, Perlis, Malaysia; University Malaysia Perlis, Biomedical and Nanotechnology Research Group, Center of Excellence Geopolymer and Green Technology (CEGeoTech), 01000 Kangar, Perlis, Malaysia
  2. Universiti Malaysia Perlis, Faculty of Chemical Engineering & Technology, Kompleks Pusat Pengajian Jejawi 2, 02600 Arau, Perlis, Malaysia
  3. Universiti Sains Malaysia, School of Materials and Mineral Resources Engineering, Engineering Campus, 14300 Nibong Tebal, Pulau Pinang, Malaysia
  4. Czestochowa University of Technology, Faculty of Production Engineering and Materials Technology, Depa rtment of Physics, 19 Armii Krajowej Av., 42-200 Częstochowa, Polandomposites
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Abstract

The article presents the results of the research related to the decomposition of polylactic acid (PLA)/halloysite nanotube (HNTs) biocomposites into a simple organic form. After manufacturing the nanocomposites, the evaluation of the composting process simulation was conducted using the biodegradation method. First, the selected properties of PLA/HNTs biocomposites, such as density, water absorption, and impact strength were tested. Next, the impact of the composting process on the behavior of PLA/HNTs composites was investigated from 30 to 90 days. Finally, the loss of mass of the composites, hardness, and the structural changes of biocomposites under the composting conditions before and after the composting were evaluated using SEM microscopy. The results showed that the PLA modified by HNT particles has biodegradation-friendly properties and therein is fully suitable for organic recycling. Due to this, in the coming years, it may contribute to the replacement of non-biodegradability polymers, i.e. polyolefins and polyesters, and reduction of plastic packaging wastes.
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Bibliography

  1.  M. Rybaczewska-Błażejowska and A. Mena-Nieto, “Circular economy: comparative life cycle assessment of fossil polyethylene terephthalate (PET) and its recycled and bio-based counterparts”, Manag. Prod. Eng. Rev. 11(4), 121–12 (2020).
  2.  D. Czarnecka-Komorowska and K. Wiszumirska, “Sustainability design of plastic packaging for the Circular Economy”, Polimery 65(1), 8–17 (2020).
  3.  J. Flizikowski and M. Macko, ”Competitive design of shredder for plastic in recycling. Ed. By I. Horvath, P. Xirouchakis, in Proc. of 2004 5th International Symposium on Tools and Methods of Competitive Engineering, Lausanne, Switzerland, 2004, pp. 1147‒1148.
  4.  P. Wiseman, Petrochemicals, Wiley, New York.1986.
  5.  P. Krawiec, L. Różanski, D. Czarnecka-Komorowska, and Ł. Warguła, “Evaluation of the Thermal Stability and Surface Characteristics of Thermoplastic Polyurethane V-Belt”, Materials 13(7), 1502 (2020).
  6.  V. Siracusa, P. Rocculi, S. Romani, and M.D. Rosa, “Biodegradable polymers for food packaging: a review”, Trends Food Sci. Technol. 19(12), 634‒643 (2008).
  7.  J.H. Song, R.J. Murphy, R. Narayan, and G.B.H. Davies, “Biodegradable and compostable alternatives to conventional plastics”, Phil. Trans. Roy. Soc. London B 364(1526), 2127–2139 (2009).
  8.  I. Wojnowska-Baryła, D. Kulikowska, and K. Bernat, “Effect of Bio-Based Products on Waste Management”, Sustainability 12(5), 2088 (2020).
  9.  P. Sakiewicz, R. Nowosielski, W. Pilarczyk, K. Gołombek, and M. Lutyński, “Selected properties of the halloysite as a component of Geosynthetic Clay Liners (GCL)”, J. Achiev. Mater. Manuf. Eng. (2), 177‒191 (2011).
  10.  Y. Tokiwa and B.P. Calabia, “Biodegradability and biodegradation of poly(lactide)”, Appl. Microbiol. Biotechnol, 72(2), 244–251 (2006).
  11.  H. Nishida and Y. Tokiwa, “Effects of higher-order structure of poly(3-hydroxybutyrate) on its biodegradation. I. Effects of heat treatment on microbial degradation”, J. Appl. Polym. Sci. 46(8), 1467–1476 (1992).
  12.  F. Razza, M. Fieschi, F.D. Innocent, and C. Bastioli, “Compostable cutlery and waste management: An LCA”, Waste Manag. 29, 1424‒1433 (2009).
  13.  APME 2002, “Using waste plastic as a substitute for coal”, Warmer Bull. 83, 20‒21 (2002).
  14.  ASTM 2002, “Standard specification for compostable plastics (Designation: D 6400‒99)”, ASTM International, USA 2002.
  15.  R. Narayan, ”Biobased and biodegradable polymer materials: Rationale, drivers, and technology exemplars”, ACS Symposium Series 939(18), 282‒306 (2006).
  16.  H. Saveyn and P. Eder, “Kryteria end-of-waste dla odpadów biodegradowalnych poddawanych obróbce biologicznej (kompost i fermentat): Propozycje techniczne”, Luxembourg, Publications Office of the European Union, 2014.
  17.  W. Sikorska, M. Musioł, J. Rydz, M. Kowalczuk, and G. Adamus, “Industrial composting as a waste management method of polyester materials obtained from renewable sources”, Polimery 11‒12, 818‒827 (2019).
  18.  J.S. Yaradoddi et al., “Alternative and Renewable Bio-based and Biodegradable Plastics”, in Handbook of Ecomaterials, eds. L. Martínez, O. Kharissova, B. Kharisov, Springer, Cham, 2019.
  19.  I. Rojek and E. Dostatni, “Machine learning methods for optimal compatibility of materials in ecodesign”, Bull. Pol. Acad Sci. Tech. Sci. 68(2), 199‒206 (2020).
  20.  A. Höglund, K. Odelius, and A.C. Albertsson, “Crucial Differences in the Hydrolytic Degradation between Industrial Polylactide and Laboratory-Scale Poly(L-lactide)”, ACS Appl. Mater. Interfaces 4‒5, 2788‒2793 (2012).
  21.  L. Avérous, “Polylactic acid: Synthesis, properties and applications”, in Monomers, Polymers and Composites from Renewable Resources, pp. 433–450, eds. M.N. Belgacem, A. Gandini, Elsevier; Oxford, UK, 2008.
  22.  G. Kale et al., “Compostability of Bioplastic Packaging Materials: An Overview”, Macromol. Biosci. 7(3), 255‒277 (2007).
  23.  T. Iwata and Y. Doi, “Morphology and enzymatic degradation of poly(L-lactic acid) single crystals, Macromolecules 31(8), 2461–2467 (1998).
  24.  R.T. McDonald, S. McCarthy, and R.A. Gross, “Enzymatic degradability of poly(lactide): effects of chain stereochemistry and material crystallinity”, Macromolecules 29(23), 7356–7361 (1996).
  25.  H. Tsuji and S. Miyauchi, “Poly(L-lactide): VI. Effects of crystallinity on enzymatic hydrolysis of poly(L-lactide) without free amorphous region”, Polym. Degrad. Stab. 71(3), 415–424 (2001).
  26.  Y. Tokiwa and T. Suzuki, “Hydrolysis of polyesters by Rhizopus delemar lipase”, Agric. Biol. Chem. 42(5), 1071–1072 (1978).
  27.  S. Li and S. McCarthy, “Influence of crystallinity and stereochemistry on the enzymatic degradation of poly(lactide)s”, Macromolecules 32(13), 4454–4456 (1999).
  28.  A.Torres, A.S.M. Li, S. Roussos, and M. Vert, “Degradation of L-and DL-lactic acid oligomers in the presence of Fusarium moniliforme and Pseudomonas putida”, J. Environ. Polym. Degrad. 4, 213–223 (1996).
  29.  T. Ohkita and S.H. Lee, “Thermal degradation and biodegradability of poly(lactic acid)/corn starch biocomposites”, J. Appl. Polym. Sci. 100(4), 3009–3017 (2006).
  30.  H. Urayama, T. Kanamori, and Y. Kimura “Properties and biodegradability of polymer blends of poly(l-lactide)s with different optical purity of the lactate units”, Macromol. Mater. Eng. 287(2), 116–121 (2002).
  31.  O. Gil-Castell et al., “Polylactide-based self-reinforced composites biodegradation: Individual and combined influence of temperature, water and compost”, Polym. Degrad. Stab. 158, 40–51 (2018).
  32.  J. Giri et al., “Compostable composites of wheat stalk micro- and nanocrystalline cellulose and poly(butylene adipate-co-terephthalate): Surface properties and degradation behavior”, J. Appl. Polym. Sci. 136(43), 48149 (2019).
  33.  P. Olsén, N. Herrera, and L.A. Berglund, “Toward biocomposites recycling: localized interphase degradation in PCL-cellulose biocomposites and its mitigation”, Biomacromolecules 21(5), 1795–1801 (2020).
  34.  L. Mespouille, Ph. Degee, and Ph. Dubois, ”Amphiphilic poly(N,N-dimethylamino-2-ethyl methacrylate)-g-poly(ε-caprolactone) graft copolymers: synthesis and characterisation”, Eur. Polym. J. 41(6), 1187‒1195 (2005).
  35.  D. Neugebauer, “The synthesis of grafted copolymers by a combination of two controlled polymerization techniques”, Polimery 56(7‒8), 521‒629 (2011).
  36.  NatureWorks catalogue [Online]. Available: http://www.cn-plas.com/uploads/soft/190227/3260HP.pdf (Accessed on 25 Oct. 2020).
  37.  Sigma-Aldrich Catalogue [Online]. Available: https://www.sigmaaldrich.com/catalog/product/aldrich/685445?lang=pl&region=PL (Accessed on 10 Oct. 2020).
  38.  K. Gawdzińska, S. Paszkiewicz, E. Piesowicz, K. Bryll, I. Irska, A. Lapis, E. Sobolewska, A. Kochmańska, W. Ślączka, “ Preparation and characterization of hybrid nanocomposites for dental applications”, Applied Sciences 9(7), 1381 (2019).
  39.  Polish standard PN-EN ISO 1183-1:2004. Plastics – Methods for determining the density of non-cellular plastics. Part 1: Immersion method, liquid pyknometer method and titration method (accessed on 28 Oct. 2020).
  40.  Polish standard PN-EN ISO 179:2010. Plastics – Determination of Charpy impact properties – Part 1: Non-instrumented impact test. (accessed on 28 Oct. 2020).
  41.  Polish standard PN-EN ISO 62:2008. Plastics – Determination of water absorption. (accessed on 29 Oct. 2020).
  42.  W. Grellmann and S. Seidler, „Polymer Testing” Hanser Publications, OH, 2013.
  43.  D. Czarnecka-Komorowska, E. Kostecka, K. Bryll, and K. Gawdzińska, „Analysis of the decomposition using the short degradation technique of polylactic acid/halloysite nanotube biocomposites”, Machine Modelling and Simulations MMS 2020 Conference, Tleń, 2020, (to be published).
  44.  A. Fick, “On Liquid Diffusion”, Lond. Edinb. Dubl. Phil. Mag. 10, 30–39 (1855).
  45.  A. Fick, “Ueber Diffusion (On Diffusion)”, Ann. Phys. Chemie von J.C. Poggendorffs 94, 59–86 (1855).
  46.  Polish standard PN-EN ISO 868. Plastics and ebonite — Determination of indentation hardness by means of a durometer (Shore hardness). (accessed on 29 Oct. 2020).
  47.  P. Russo, S. Cammarano, E. Bilotti, T. Peijs, P. Cerruti, and D. Acierno, ”Physical properties of poly lacticacid/clay nanocomposite films: Effect of filler content and annealing treatment”, J. Appl. Polym. Sci. 131(2), 39798 (2014).
  48.  K. Prashantha, B. Lecouvet, M. Sclavons, M.F Lacrampe, and P. Krawczak, “Poly(lactic acid)/halloysite nanotubes nanocomposites: Structure, thermal, and mechanical properties as a function of halloysite treatment”, J. Appl. Polym. Sci. 128(3), 1895–1903, (2013).
  49.  S. Montava-Jorda, V. Chacon, D. Lascano, L. Sanchez-Nacher, and N. Montanes, “Manufacturing and characterization of functionalized aliphatic polyester from poly(lactic acid) with halloysite nanotubes”, Polymers 11(8), 1314 (2019).
  50.  M. Murariu, A.-L. Dechief, Y. Paint, S. Peeterbroeck, L. Bonnaud, and P. Dubois, “Polylactide (PLA)-halloysite nanocomposites: Production. morphology and key-properties”, J. Polym. Environ. 20(4), 932–943 (2012).
  51.  D. Czarnecka, D. Ciesielska, and J. Jurga, “The brittle-ductile transition (BDT) in recycled polymers”, Proceeding of the Rewas’04, Global Symposium on Recycling, Waste Treatment and Clean Technology, Madrid, Spain, 2004.
  52.  J.L. Thomason and M.A. Vlug, “Influence of fibre length and concentration on the properties of glass fibre-reinforced polypropylene: 4. Impact properties”, Composites Part A 28A, 277‒288 (1997).
  53.  Y. Chen, L.M. Geever, J.A. Killion, J.G. Lyons, C.L. Higginbotham, and D.M. Devine, “Halloysite nanotube reinforced polylactic acid composite”, Polym. Compos. 38(10), 2166–2017 (2017).
  54.  S. Montava-Jorda, V. Chacon, D. Lascano, L. Sanchez-Nacher, and N. Montanes, “Manufacturing and characterization of functionalized aliphatic polyester from poly(lactic acid) with halloysite nanotubes”, Polymers 11(8), 1314 (2019).
  55.  R. Kumar, M.K. Yakubu, and R.D. Anandjiwala, “Biodegradation of flax fiber reinforced poly lactic acid”, Express Polym. Lett. 4(7), 423–430 (2010).
  56.  A.P. Mathew, K. Oksman, and M. Sain, “Mechanical properties of biodegradable composites from poly lactic acid (PLA) and microcrystalline cellulose (MCC)”, J. Appl. Polym. Sci. 97(5), 2014–2025 (2005).
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Authors and Affiliations

Dorota Czarnecka-Komorowska
1
ORCID: ORCID
Katarzyna Bryll
2
ORCID: ORCID
Ewelina Kostecka
2
ORCID: ORCID
Małgorzata Tomasik
3
ORCID: ORCID
Elżbieta Piesowicz
4
ORCID: ORCID
Katarzyna Gawdzińska
2
ORCID: ORCID

  1. Institute of Materials Technology, Polymer Processing Division; Poznan University of Technology, 60-965 Poznan, Poland
  2. Department of Machines Construction and Materials, Maritime University of Szczecin, 71-650 Szczecin, Poland
  3. Department of Interdisciplinary Dentistry, Pomeranian Medical University, 70-111 Szczecin, Poland
  4. Institute of Material Science and Engineering, West Pomeranian University of Szczecin, 70-310 Szczecin, Poland

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