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Article

The Structure and Mechanical Properties of the Surface Layer of Polypropylene Polymers with Talc Additions

1
Department of Applied Physics, Lublin University of Technology, ul. Nadbystrzycka 38, 20-618 Lublin, Poland
2
Department of Polymer Processing, Lublin University of Technology, ul. Nadbystrzycka 36, 20-618 Lublin, Poland
*
Author to whom correspondence should be addressed.
Materials 2020, 13(3), 698; https://doi.org/10.3390/ma13030698
Received: 21 December 2019 / Revised: 1 February 2020 / Accepted: 2 February 2020 / Published: 4 February 2020
In the presented work the influence of different 3MgO·4SiO2·H2O (talc) contents in polypropylene samples on the structure, hardness, elasticity, and friction of the surface layer was investigated. The talc content ranged from 0 to 25 wt.%, and all the samples were obtained in the same conditions by the injection molding process. The analysis of the microstructure was performed by X-ray diffraction. Changes in the hardness and elasticity were determined for three different depths (300, 800, and 4000 nm) using an ultra nano tester. For the purpose of the examination of the friction properties of the obtained compounds, a nano-scratch tester was applied. Increasing the talc content caused growth in the indentation modulus and hardness values. Simultaneously, an effect of decreasing hardness and elastic modulus with increasing indentation depth was observed. The smallest effect size was observed for 25 wt.% talc content, which might suggest that talc addition increased the homogeneity of the observed composites. Scratch tests showed increasing scratch resistance along with increasing talc content for both constant and progressive loads. The growth in talc concentration led to a decrease in the degree of the polypropylene (PP) crystallinity of the surface layer. The exfoliation process occurred in PP composites. View Full-Text
Keywords: polypropylene; hardness; elastic modulus; friction; talc; X-ray diffraction polypropylene; hardness; elastic modulus; friction; talc; X-ray diffraction
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MDPI and ACS Style

Świetlicki, M.; Chocyk, D.; Klepka, T.; Prószyński, A.; Kwaśniewska, A.; Borc, J.; Gładyszewski, G. The Structure and Mechanical Properties of the Surface Layer of Polypropylene Polymers with Talc Additions. Materials 2020, 13, 698. https://doi.org/10.3390/ma13030698

AMA Style

Świetlicki M, Chocyk D, Klepka T, Prószyński A, Kwaśniewska A, Borc J, Gładyszewski G. The Structure and Mechanical Properties of the Surface Layer of Polypropylene Polymers with Talc Additions. Materials. 2020; 13(3):698. https://doi.org/10.3390/ma13030698

Chicago/Turabian Style

Świetlicki, Michał, Dariusz Chocyk, Tomasz Klepka, Adam Prószyński, Anita Kwaśniewska, Jarosław Borc, and Grzegorz Gładyszewski. 2020. "The Structure and Mechanical Properties of the Surface Layer of Polypropylene Polymers with Talc Additions" Materials 13, no. 3: 698. https://doi.org/10.3390/ma13030698

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