The Structure and Mechanical Properties of the UHMWPE Films Modified by the Mixture of Graphene Nanoplates with Polyaniline

Abstract

Highly oriented UHMWPE films were reinforced with functionalized graphene nanoplates (GNP). GNP was functionalized by deposition of polyaniline (PANI) on the GNP surface. The structure of GNP/PANI was studied by Raman spectroscopy, and the structure of xerogels and films based on UHMWPE was studied by DSC and SEM. PANI promotes the reduction of the GNP aggregation in the UHMWPE matrix and increases the degree of crystallinity due to heterogeneous crystallization. The new lamellar crystal structure has a high drawability. The highest value of the tensile strength 1330 MPa (an increase of 45%) was obtained with a filler content of 2 wt % GNP/PANI, and the highest value of Young’s modulus 41 GPa (an increase of 32%) was obtained with a filler content of 1 wt % GNP/PANI. The effect of GNP with PANI fillers on the dynamic mechanical properties of the UHMWPE films was discussed.

Silkworm and spider silk electrospinning: a review

“…Spider silk, particularly flagelliform threads which are the most extensible, can extend up to 270% of its original length (at break), 27 for the dragline (Table 2 ). For comparison with our previous high-resistance fibers, Kevlar ® 29 has a strain at break of 2.4%, UHMWPE does not elongate further than 7% (Dayyoub et al 2019 ), Vectran ® 3.8% (Ward 2012 ) and Zylon ® 2.5% (Seely et al 2004 ). Nylon 6 has a strain at break reaching 16%, and steel is not considered as an elastic material (De Araújo 2011 ).…”

“…The advantage of a bio-sourced fiber in comparison with petrol-based material, is that not only its synthesis is realized in water and without high energy input, but also its breakdown after use can be achieved in nature without toxic consequences for ecosystems. References for Kevlar ® (n = 2/2) (Quintanilla), Zylon ® (n = 3/3) (Seely et al 2004 ; Kumar et al 2002 ; Zhang et al 2018 ; Hao et al 2019 ), Vectran ® ( n = 1/1) (Tanaka and Moritaka; Clements 1998 ; Ward 2012 ), UHWPE ( n = 1/1) (Ogawa et al; Dayyoub et al 2019 ), elastane ( n = 1/1) (Senthilkumar et al 2011 ), Nylon 6 ( n = 4/4) (Rangari et al 2008 ; Bhattacharyya et al 2009 ), spider’s silk ( n = 4/4) (Heim et al 2009 ; Teule et al 2012 ), silkworm’s silk ( n = 13/18) (various sources referenced in) (Zhao et al 2006 ), Curaua (n = 3/2) (Yan et al 2016 ; Monteiro et al 2010 ), PALF ( n = 2/2) (Yan et al 2016 ), Ramie ( n = 1/1) (Kumar et al 2020 ), cotton ( n = 2/2) (Yan et al 2016 ), Flax ( n = 2/2) (Yan et al 2016 ; Zhu et al 2013 ) and wool ( n = 3/4) (Smith et al 2014 ; Yükseloğlu et al 2015 ). n : number of gathered values per mechanical property (ultimate tensile strength/strain at break) …”

Processing and Characterization of Polymer-Based Far-Infrared Composite Materials

“…Young’s modulus is a basic mechanical parameter that characterizes the elastic deformation property of a film. A composite with a large Young’s modulus is less prone to deformation, which means it has better elasticity [27]. The significant difference ( p < 0.05) between the two directions and two processing methods can be noted based on these five parameters in Table 1.…”

Molecular Morphology and Viscoelasticity of ASP Solution under the Action of a Different Medium Injection Tool

“…In addition, most of the experiments and simulations take polymer solution as the research object and there is less research on ASP solution. And most of the experimental research methods for polymer and other displacement agents are mainly aimed at analyzing the characteristic structure of molecular micromorphology [34,35,36,37] and the relevant parameters of shear rheological experiments [38,39,40,41,42,43,44,45,46,47,48]. Such research methods are relatively single.…”