{"title":"Synthesis and characterisation of polyaniline/polyvinyl alcohol composites as supercapacitor electrode materials","authors":"Roopasri Rajamany, Sivakrishna Prakash, Y. Ismail","doi":"10.1080/14658011.2021.1981090","DOIUrl":"https://doi.org/10.1080/14658011.2021.1981090","url":null,"abstract":"ABSTRACT Composites of polyaniline and polyvinyl alcohol were prepared through an in-situ polymerisation of aniline using ethanol as a coagulating agent and characterised for their applicability as supercapacitor electrode material. The thermally stable composites afford moderately high electrical conductivity. Composite with 0.03 mol aniline exhibited a high electrical conductivity of 0.371 × 10−2 S/cm. The variation in electrical conductivity with an increase in aniline content is consistent with the band gap energies estimated from electronic spectra and IR drop. SEM analysis confirms coral-like nanowires of polyaniline (PANI) grown within the polyvinyl alcohol matrix. Cyclic voltametric studies revealed that the composites are highly electroactive as they allow easy diffusion of ions through the nanowires of PANI for efficient electrochemical reaction. The composite with 0.03 mol aniline has a superior specific capacitance of 302 Fg−1 at a scan rate of 5 mV/s. The composite exhibited a maximum energy density of 41.94 Whkg−1 and excellent stability even after storage of 18 months in ambient condition with 83.3% capacitance retention.","PeriodicalId":20245,"journal":{"name":"Plastics, Rubber and Composites","volume":"18 1","pages":"240 - 249"},"PeriodicalIF":2.0,"publicationDate":"2021-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85208579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The effect of different compatibilisers on the morphology and rheological properties of PP/PET polymer blends","authors":"S. Kordjazi, Z. Kordjazi, N. Golshan Ebrahimi","doi":"10.1080/14658011.2021.1981525","DOIUrl":"https://doi.org/10.1080/14658011.2021.1981525","url":null,"abstract":"ABSTRACT In the present study, the compatibilisation of polypropylene/polyethylene terephthalate (PP/PET) blends with different types of compatibilisers including maleic anhydride-grafted polypropylene (PP-g-MA), glycidyl methacrylate-grafted polypropylene (PP-g-GMA) and ethylene propylene diene monomer (EPDM) rubber in different concentrations was examined. Samples were evaluated in terms of morphology, thermal and rheological properties. Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimeter (DSC) were used. According to the results, all samples had a matrix-droplet morphology. Moreover, with increasing the compatibiliser and its concentration, the droplet sizes in dispersed phase decreased. In other words, compatibilised PP/PET showed a greater dispersed phase size reduction, lower crystallinity percentage and larger storage modulus at low frequencies in comparison with non-compatibilised PP/PET blend. Among different samples, polymer blend compatibilised with PP-g-MA (5 phr) indicated the lowest particle size and significantly improved the compatibilisation of the PP/PET blend.","PeriodicalId":20245,"journal":{"name":"Plastics, Rubber and Composites","volume":"19 1","pages":"250 - 258"},"PeriodicalIF":2.0,"publicationDate":"2021-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75230534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. I. Sharshir, S. Fayek, Amal. F. Abd El-Gawad, M. Farahat, M. Ismail, M. Ghobashy
{"title":"Simulating the electric field distribution in medium-voltage cables of cross-linked polyethylene/Cu nanocomposites irradiated by E-beam with reference to the XLPE market","authors":"A. I. Sharshir, S. Fayek, Amal. F. Abd El-Gawad, M. Farahat, M. Ismail, M. Ghobashy","doi":"10.1080/14658011.2021.1975445","DOIUrl":"https://doi.org/10.1080/14658011.2021.1975445","url":null,"abstract":"ABSTRACT In this paper, the distribution of the electric field of medium voltage (MV) underground cable insulation made of polyethylene/copper nanoparticles (XLPE/Cu) is investigated. Three methods were established for copper nanoparticles (CuNPs) synthesis such as the alkaline reduction process, electrolysis process and metal displacement reaction. Ultraviolet–visible spectra, X-ray diffraction, and transmission electron microscopy (TEM) were used to classify the obtained CuNPs. The XLPE/Cu films with different CuNP weight content (0%, 1%, 3% and 5%) were subjected to a 3 MeV electron beam (EB) with different doses (0, 15, 20 and 25 kGy). The optimum AC/DC conductivity (AC 2 × 10−3 S m−1, DC 4.63 × 10−2 S m−1) in minimum relative permittivity (2.05) achieved for (XLPE/5-Cu) 25 kGy that is has a CuNP content of 5 wt-% and irradiated at 25 kGy. The electric field distribution in the middle of the (XLPE/5-Cu) 25 kGy sample is maximum uniform than at the top or bottom.","PeriodicalId":20245,"journal":{"name":"Plastics, Rubber and Composites","volume":"41 1","pages":"281 - 292"},"PeriodicalIF":2.0,"publicationDate":"2021-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77196917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Double-layered radar absorbing structures of MnZn ferrite/Pani-coated MWCNT filled nanocomposites for X-band frequencies","authors":"T. Haritha, K. Ramji","doi":"10.1080/14658011.2021.1971361","DOIUrl":"https://doi.org/10.1080/14658011.2021.1971361","url":null,"abstract":"ABSTRACT In this study, radar absorbing structures (RAS) containing MnZn ferrite/Polyaniline (Pani) coated multi-walled carbon nanotubes (PCNTs) were fabricated to observe their microwave absorption behaviour in X-band frequency range. The ferrite nano particles were prepared by sol–gel auto combustion method. The prepared nano ferrite powder was characterised using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and vibrating sample magnetometer (VSM). RAS filled with nano ferrite particles and PCNTs in different concentrations were fabricated to investigate their microwave absorption behaviour using a vector network analyzer (VNA) and later reflection loss (RL) is estimated. The minimum RL loss estimated for double-layered RAS are found to be −29.06 dB at 10.8 GHz for ferrite fixed samples and −33.07 dB at 9.6 GHz for PCNT fixed samples. Further, their mechanical behaviour is examined.","PeriodicalId":20245,"journal":{"name":"Plastics, Rubber and Composites","volume":"236 1","pages":"269 - 280"},"PeriodicalIF":2.0,"publicationDate":"2021-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76121539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Mostaanzadeh, M. Shahmohammadi, A. Ehsani, Mojtaba Moharramnejad, M. Babazadeh
{"title":"Nanocomposite of p-type conductive polymer/iron (III) trimesic (Fe-BTC) metal–organic frameworks: synthesis, characterisation and pseudocapacitance performance","authors":"H. Mostaanzadeh, M. Shahmohammadi, A. Ehsani, Mojtaba Moharramnejad, M. Babazadeh","doi":"10.1080/14658011.2021.1966247","DOIUrl":"https://doi.org/10.1080/14658011.2021.1966247","url":null,"abstract":"ABSTRACT In the present study, Fe(II)-based MOF (Fe-BTC, BTC = 1,3,5-benzentricarboxylate) was synthesised via a chemical method and then synthesised hybrid polyorthoaminophenol (POAP)/Fe-BTC films by electropolymerisation of POAP in the presence of Fe-BTC to serve as the active electrode for the electrochemical storage device. The characterisation of Fe-BTC and POAP/ Fe-BTC composite film has been investigated by surface and electrochemical analysis. Benefitting from the intrinsic synergetic contributions from structural/compositional merits, the electrode delivers an impressive capacity of 625 F g−1 at 0.005 mA. This article introduces new nanocomposite materials for electrochemical pseudocapacitor by taking advantage of simple synthesis, high active surface area and stability in an aqueous electrolyte.","PeriodicalId":20245,"journal":{"name":"Plastics, Rubber and Composites","volume":"8 1","pages":"196 - 204"},"PeriodicalIF":2.0,"publicationDate":"2021-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78698969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Surface modified iron oxide (Fe3O4) nanosheets reinforced PVDF nanocomposites: influence on morphology, thermal and magnetic properties","authors":"N. Lakshmi, P. Tambe, B. Panda","doi":"10.1080/14658011.2021.1966248","DOIUrl":"https://doi.org/10.1080/14658011.2021.1966248","url":null,"abstract":"ABSTRACT In this work, iron oxide (Fe3O4) nanosheets are synthesised using the solvothermal method. Transmission electron microscope (TEM) observation confirms the nanosheets-like morphology of Fe3O4. While X-ray diffraction (XRD) studies of Fe3O4 nanosheets reveal the Fe3O4 nanosheets synthesised are crystalline in nature. Vibration sample magnetometry studies of Fe3O4 nanosheets have shown superparamagnetic behaviour with saturation magnetisation (M s) value of 29.6 emu/g. The synthesised Fe3O4 nanosheets are dispersed in poly(vinylidene fluoride) PVDF matrix using the solution casting method with slow evaporation of solvent at 60 °C which facilitates the formation of β-form of PVDF crystals. The PVP modified Fe3O4 nanosheets incorporation in the PVDF matrix influences the thermal stability and crystalline behaviour. Scanning electron microscope observation shows the improved dispersion of Fe3O4 nanosheets in the PVDF matrix by modifying Fe3O4 nanosheets with PVP. The M s value is increased by ∼122% for PVP modified Fe3O4 nanosheets reinforced PVDF nanocomposites as compared to Fe3O4 nanosheets reinforced PVDF nanocomposites.","PeriodicalId":20245,"journal":{"name":"Plastics, Rubber and Composites","volume":"36 1","pages":"205 - 216"},"PeriodicalIF":2.0,"publicationDate":"2021-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78702465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Elena Roda, Franco Galletti, A. Truscello, C. Gambarotti
{"title":"Flame behaviour of magnesium and aluminium hydroxide-filled polymer composites used in power and telecom cables","authors":"Elena Roda, Franco Galletti, A. Truscello, C. Gambarotti","doi":"10.1080/14658011.2021.1962617","DOIUrl":"https://doi.org/10.1080/14658011.2021.1962617","url":null,"abstract":"ABSTRACT The effect of flame contact on Low Smoke Zero Halogen (LS0H) polyethylene-based model composite used for power cable has been investigated, focusing the attention on the fate of aluminium trihydroxide (ATH) and magnesium dihydroxide (MDH) utilized as flame retardant fillers. By using a flame reproducing the calorific value of EU CPR Regulation, during the contact with flame, the composite with magnesium hydroxide shows the formation of intermediate carbonate, which further decomposes giving the oxide. The same finding was observed in the blank test performed on pure MDH. This feature was not observed in ATH composite and pure one. The higher decomposition temperature of MDH, together with the formation of carbonate could play a key role in the higher efficiency of MDH compared to that of ATH. Moreover, we report that the stearic acid, present in the composite as compatibiliser and as processing aid, seems to migrate towards the external surfaces.","PeriodicalId":20245,"journal":{"name":"Plastics, Rubber and Composites","volume":"20 1","pages":"185 - 195"},"PeriodicalIF":2.0,"publicationDate":"2021-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76903884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effects of high functionality polyol on the structure and properties of rigid polyurethane foam","authors":"Yumei Luo, Z. Ye, Jingcun Yan","doi":"10.1080/14658011.2021.1959132","DOIUrl":"https://doi.org/10.1080/14658011.2021.1959132","url":null,"abstract":"ABSTRACT High performance rigid polyurethane foam (RPUF) has been designed by using hyperbranched polyurethane (HBPU) polyol with high functionality to replace traditional polyol. The influences of different types of polyol on the apparent density and heat deformation temperature of RPUF were studied. The microstructures, including cell structure, cell diameter and distribution, were characterised by SEM. Effects of polyol types on the cell structure of RPUF were discussed. Thermal resistance and thermal stability were measured by the thermal deformation vicat temperature meter and TGA. Thermal conductivity of RPUF was characterised by Hot Disk, and the mechanical properties were also measured. Compared with the RPUFs obtained from commercial polyether polyols, RPUF-HBPU exhibited enhanced thermal resistance. Besides, the compressive strength, flexural strength and tensile strength were up to 4.5, 4 and 3.5 times, respectively, than that of traditional RPUF as well. The as-prepared RPUF-HBPU displayed low thermal conductivity/thermal diffusion and good thermal stability.","PeriodicalId":20245,"journal":{"name":"Plastics, Rubber and Composites","volume":"1 1","pages":"154 - 161"},"PeriodicalIF":2.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89687871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. Altay, Elif Kizilkan, Y. Seki, A. Isbilir, M. Sarıkanat
{"title":"Hybrid carbon filled thermoplastic composites: synergistic effect of synthetic graphite and graphene nanoplatelets on thermal and mechanical properties of polyamide 4.6","authors":"L. Altay, Elif Kizilkan, Y. Seki, A. Isbilir, M. Sarıkanat","doi":"10.1080/14658011.2021.1955200","DOIUrl":"https://doi.org/10.1080/14658011.2021.1955200","url":null,"abstract":"ABSTRACT In comparison with conventional polyamides, polyamide 4.6 is known as one of the high-temperature polyamides due to polymer chain constituents which also enhances its dimensional stability, creep resistance, and chemical resistance. The effect of hybrid synthetic graphite and graphene nanoplatelets fillers on thermal conductivity of polyamide 4.6 based composites was investigated in this study. Synthetic graphite and graphene nanoplatelets filled polyamide 4.6 based composites were fabricated using a twin-screw extruder. The variations on electrical, mechanical, thermal, and morphological properties were also examined. The highest in-plane and through-plane thermal conductivity values were obtained for hybrid 40 wt.% synthetic graphite and 5 wt.% graphene nanoplatelets filled composites as 21.65 and 4.04 W/mK, respectively. It was reported that the usage of hybrid carbon fillers in polyamide 4.6 leads to better thermal conductivity value..","PeriodicalId":20245,"journal":{"name":"Plastics, Rubber and Composites","volume":"18 1","pages":"173 - 184"},"PeriodicalIF":2.0,"publicationDate":"2021-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89768825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ren Yilin, Zhixiong Huang, M. Shi, Z. Deng, Chuang Dong
{"title":"Decomposition mechanism of boron phenolic resin composites under temperature gradient","authors":"Ren Yilin, Zhixiong Huang, M. Shi, Z. Deng, Chuang Dong","doi":"10.1080/14658011.2021.1955199","DOIUrl":"https://doi.org/10.1080/14658011.2021.1955199","url":null,"abstract":"ABSTRACT As the classic second-generation high silica/boron phenolic ablation resistant composite, it has been widely used in rockets and aerospace fields and has shown excellent performance. This paper studies its thermal protection and ablation resistance. Boron phenolic resin/high silica fibre composite containing wollastonite is well fabricated by compression moulding. Fourier transform infrared spectrometer reveals that due to the cleavage and oxidation of methylene groups, the phenolic system collapse. Aromatics are converted into amorphous carbon through a polycyclic reaction. The results of scanning electron microscopy and X-ray diffraction analysis demonstrate that inorganic fibres melted at high temperature and formed a new dense matrix with residual carbon and wollastonite filler. The main composition of the new phase is still silica, and the mechanical properties have been improved by 12%. The well-bonded matrix provides the ablative material better heat resistance at high temperature.","PeriodicalId":20245,"journal":{"name":"Plastics, Rubber and Composites","volume":"9 1","pages":"163 - 172"},"PeriodicalIF":2.0,"publicationDate":"2021-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90084627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}