Electrical conductivity of polymer composites based on carbonized wood flour via plasma post‐treatment as an effective and economical filler

2021 ◽  
Author(s):  
Woo Young Kim ◽  
Ji‐un Jang ◽  
Hun Su Lee ◽  
Seong Yun Kim
Keyword(s):  
Electrical Conductivity ◽  
Polymer Composites ◽  
Wood Flour ◽  
Post Treatment ◽  
Carbonized Wood

Chitosan/Polyethylene Oxide (PEO) Filled Carbonized Wood Fiber Conductive Composite Film

2020 ◽  
Vol 1010 ◽  
pp. 638-644
Author(s):  
Mohd Pisal Mohd Hanif ◽  
Abd Jalil Jalilah ◽  
Mohd Fadzil Hanim Anisah ◽  
Arumugam Tilagavathy
Keyword(s):  
Electrical Conductivity ◽  
Tensile Strength ◽  
Polyethylene Oxide ◽  
Biomedical Applications ◽  
Wood Fiber ◽  
Conductive Polymer ◽  
Renewable Resource ◽  
Blend Films ◽  
Conductive Composite Film ◽  
Carbonized Wood

Biopolymer-based conductive polymer composites (CPCs) would open up various possibilities in biomedical applications owing to ease of processing, renewable resource and environmentally friendly. However, low mechanical properties are a major issue for their applications. In this study, the investigated the conductivity of chitosan/ PEO blend films filled with carbonized wood fiber (CWF) prepared by solution casting. The effect of CWF was also investigated on tensile properties and their morphological surfaces. The tensile results from different ratios of chitosan/PEO blend films without CWF show that the tensile strength and modulus increased with the increase of chitosan content and chitosan/PEO blend film with 70/30 ratio exhibited the best combination of tensile strength and flexibility. However, a reduction of tensile strength was observed when CWF amount was increased while the modulus of the tensile shows an increment. The film also exhibited higher electrical conductivity as compared to low chitosan ratio. The addition of CWF greatly enhanced the conductivity three-fold from 10-10 to 10-6 S/cm. The electrical conductivity continued to increase with the increase of CWF up to 30wt%. The surface morphology by Scanning Electron Microscopy (SEM) exhibits the absence of phase separation for the blends indicating good miscibility between the PEO and chitosan. Incorporation of CWF into the blend films at 5wt% showed agglomeration. However, the increase of CWF created larger agglomerations that formed conductive pathways resulting in improved conductivity. FTIR analysis suggested that intermolecular interactions occurred between chitosan and PEO while CWF interacts more with the protons of PEO.

scholarly journals Biofilm on the polymer composites - qualitative and quantitative microbiological analysis

2021 ◽  
Author(s):  
Dobrochna Ginter-Kramarczyk ◽  
Izabela Kruszelnicka ◽  
Michał Michałkiewicz ◽  
Przemysław Muszyński ◽  
Stanisław Zajchowski ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Wood Flour ◽  
Biological Membrane ◽  
Polymeric Materials ◽  
Active Surface ◽  
Modern Technology ◽  
Biofilm Reactor ◽  
Active Surface Area ◽  
Microbiological Analysis ◽  
Wood Polymer

Abstract Background Modern technology, which has been getting more and more recognition in the world for the last several years, is the moving bed biofilm reactor (MBBR) technology. Currently, movable biofilters made of basic polymeric materials, polyethylene and polypropylene. Methods An innovative solution in the field, mainly because of the large active surface area for biological membrane can be wood polymer composites (WPC). In the research polypropylene (PP) and polyvinyl chloride (PVC) was used as the matrix. Two types of commercial wood flour also, selected from conifers, were selected for the study: Lignocel C 120 with particle sizes in the range of 70 μm–150 μm and L9 with dimensions of 0.8–1.1 mm and wood chips, which are used on an industrial scale for the production of chipboards, were used as a filler. A quantitative and qualitative analysis of newly formed biofilms was performed. Results The study showed a direct effect of the filler and its particle size on the susceptibility to the formation of the biofilm of on the composites surface. Conclusions Polypropylene PPH 648 T and 40% wt. of L9 type wood flour was the most susceptible to biofilm formation. Pure polypropylene PPH 648 T was the least susceptible material.

Electrical conductivity and rheology of carbon fiber/liquid crystal polymer composites

2007 ◽  
Vol 28 (2) ◽  
pp. 168-174 ◽  
Author(s):  
Julia A. King ◽  
Jason M. Keith ◽  
Ryan C. Smith ◽  
Faith A. Morrison
Keyword(s):  
Electrical Conductivity ◽  
Liquid Crystal ◽  
Carbon Fiber ◽  
Polymer Composites ◽  
Liquid Crystal Polymer ◽  
Crystal Polymer

scholarly journals Influence of particle aspect ratio and ability to aggregate on electrical conductivity of fiber-forming polymer composites

2020 ◽  
Vol 1 (3) ◽  
pp. 99-107
Author(s):  
Ekaterina S. Tsobkallo ◽  
Olga A. Moskalyuk ◽  
Vladimir E. Yudin ◽  
Andrey N. Aleshin
Keyword(s):  
Electrical Conductivity ◽  
Aspect Ratio ◽  
Polymer Composites ◽  
Particle Aspect Ratio

Exceptionally high thermal and electrical conductivity of three-dimensional graphene-foam-based polymer composites

RSC Advances ◽  
2016 ◽  
Vol 6 (27) ◽  
pp. 22364-22369 ◽  
Author(s):  
Zhiduo Liu ◽  
Dianyu Shen ◽  
Jinhong Yu ◽  
Wen Dai ◽  
Chaoyang Li ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Polymer Composites ◽  
Epoxy Matrix ◽  
Three Dimensional ◽  
Neat Epoxy ◽  
Graphene Foam

Three dimensional graphene foam incorporated into epoxy matrix greatly enhance its thermal conductivity (up to 1.52 W mK−1) at low graphene foam loading (5.0 wt%), over an eight-fold enhancement in comparison with that of neat epoxy.

Electrical conductivity and rheological behavior of multiphase polymer composites containing conducting carbon black

2008 ◽  
Vol 48 (11) ◽  
pp. 2090-2097 ◽  
Author(s):  
Qinghua Zhang ◽  
Hui Xiong ◽  
Weixia Yan ◽  
Dajun Chen ◽  
Meifang Zhu
Keyword(s):  
Electrical Conductivity ◽  
Carbon Black ◽  
Polymer Composites ◽  
Rheological Behavior

Thermal Behavior of the Porous Polymer Composites Based on LDPE and Natural Fillers Studied by Real Time Thermal Microscopy

2021 ◽  
Vol 899 ◽  
pp. 644-659
Author(s):  
Elena A. Grigorieva ◽  
Anatoly A. Olkhov ◽  
Oleg V. Gradov ◽  
Margaret A. Gradova
Keyword(s):  
Composite Material ◽  
Thermal Behavior ◽  
Polymer Composites ◽  
Polymer Composite ◽  
Corn Starch ◽  
Wood Flour ◽  
Porous Polymer ◽  
Thermal Microscopy ◽  
Particle Size Fractions ◽  
Composite Samples

Foaming of the biodegradable polymer composites and melting of the gas-filled materials were studied using thermal microscopy. Composite materials under investigation were based on the low density polyethylene and natural products used as the polymer composite fillers: wood flour and corn starch. Porous structure of the composite material was obtained using a chemical porogen “Hydrocerol BIF”. It has been shown that the foaming and melting processes occur differently in the polymer composite samples containing either different amount of the fillers or the same content of the filler with different particle size fractions. Thermal behavior of the composite samples was shown to be different from the behavior of pure polyethylene, which indicates non-additivity (superadditivity) of the contribution of the above components to the thermal behavior of the final composite material. All the results obtained using heating stage (hot stage) microscopy were in good agreement with the SEM and DSC data.

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