Journal of Physical Science最新文献_第6页

The Physical and Mechanical Properties of Corn-based Bioplastic Films with Different Starch and Glycerol Content 不同淀粉和甘油含量玉米基生物塑料薄膜的物理力学性能

IF 0.7

Journal of Physical Science Pub Date : 2021-11-25 DOI: 10.21315/jps2021.32.3.7

Nur Nadia Nasir, Siti Amira Othman

{"title":"The Physical and Mechanical Properties of Corn-based Bioplastic Films with Different Starch and Glycerol Content","authors":"Nur Nadia Nasir, Siti Amira Othman","doi":"10.21315/jps2021.32.3.7","DOIUrl":"https://doi.org/10.21315/jps2021.32.3.7","url":null,"abstract":"Petroleum-based plastics have had a long history with varied materials and applications. However, the major drawback with these plastics is their harmful impact on the environment. Poor disposal management of these plastics have ultimately affected humans. Therefore, starch-based bioplastics have been widely used because of their renewability, sustainability and cost-effectiveness. This work investigated the effect of different concentrations of corn starch (10%, 15%, and 20% w/w of distilled water) and glycerol (20%, 30%, and 40% w/v of corn starch) on the properties of corn-based bioplastic films. Particularly, mechanical (tensile strength, Young’s modulus and elongation at break) and physical (water absorption rate and moisture content) properties were investigated. These films were prepared by the solvent casting method. It was demonstrated that the addition of 30% glycerol produced mechanical properties closest to the standard value, while films with a composition of 15% of corn starch had the most optimised value. Meanwhile, 20% glycerol and 20% corn starch produced a film with high strength and stiffness but lacked flexibility. Higher concentrations of starch and glycerol produced the highest moisture and water absorption rate. This was due to the highly hydrophilic nature of both corn starch and glycerol. However, the concentration of glycerol needs to be adjusted based on the intended use of the film. In conclusion, the concentration of corn starch and glycerol produced slightly different outcomes. Thus, the properties and application of the cornbased bioplastic films can be maximised by optimising the concentration of corn starch and glycerol.","PeriodicalId":16757,"journal":{"name":"Journal of Physical Science","volume":"815 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74873331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Structural and Optical Properties of MAl2O4 Spinel-type Prepared by Solution Combustion Synthesis Method for Photocatalytic Application 光催化用溶液燃烧合成法制备尖晶石型MAl2O4的结构和光学性质

IF 0.7

Journal of Physical Science Pub Date : 2021-11-25 DOI: 10.21315/jps2021.32.3.5

K. Mahi, R. Mostefa

引用次数: 0

Preliminary Study on Mechanical Properties of 3D Printed MultimaterialsABS/PC Parts: Effect of Printing Parameters 3D打印复合材料sabs /PC零件力学性能的初步研究:打印参数的影响

IF 0.7

Journal of Physical Science Pub Date : 2021-08-25 DOI: 10.21315/jps2021.32.2.7

Pui-Voon Yap, M. Chan, S. Koay

{"title":"Preliminary Study on Mechanical Properties of 3D Printed Multimaterials\u0000ABS/PC Parts: Effect of Printing Parameters","authors":"Pui-Voon Yap, M. Chan, S. Koay","doi":"10.21315/jps2021.32.2.7","DOIUrl":"https://doi.org/10.21315/jps2021.32.2.7","url":null,"abstract":"This research work highlights the mechanical properties of multi-material by fused deposition modelling (FDM). The specimens for tensile and flexural test have been printed using polycarbonate (PC) material at different combinations of printing parameters. The effects of varied printing speed, infill density and nozzle diameter on the mechanical properties of specimens have been investigated. Multi-material specimens were fabricated with acrylonitrile butadiene styrene (ABS) as the base material and PC as the reinforced material at the optimum printing parameter combination. The specimens were then subjected to mechanical testing to observe their tensile strength, Young’s modulus, percentage elongation, flexural strength and flexural modulus. The outcome of replacing half of ABS with PC to create a multi-material part has been examined. As demonstrated by the results, the optimum combination of printing parameters is 60 mm/s printing speed, 15% infill density and 0.8 mm nozzle diameter. The combination of ABS and PC materials as reinforcing material has improved the tensile strength (by 38.46%), Young’s modulus (by 23.40%), flexural strength (by 23.90%) and flexural modulus (by 37.33%) while reducing the ductility by 14.31% as compared to pure ABS. The results have been supported by data and graphs of the analysed specimens.","PeriodicalId":16757,"journal":{"name":"Journal of Physical Science","volume":"9 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78808418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Effect of Post-Heating Temperature on Efficiency of Dye-Sensitized Solar Cell with ZnO:Al Thin Films Prepared by Sol-Gel Spin Coating 后加热温度对溶胶-凝胶自旋镀膜法制备ZnO:Al薄膜染料敏化太阳能电池效率的影响

IF 0.7

Journal of Physical Science Pub Date : 2021-08-25 DOI: 10.21315/jps2021.32.2.5

N. Siregar, M. Motlan, Jonny Haratua Pangabean

引用次数: 0

Spanish Colonial Period Bricks from Churches in Laguna, Philippines: A Preliminary Chemical Characterisation Using X-ray Diffraction, Energy Dispersive X-ray Fluorescence and Fourier Transform Infrared 西班牙殖民时期来自菲律宾拉古纳教堂的砖块:使用x射线衍射、能量色散x射线荧光和傅里叶变换红外进行初步化学表征

IF 0.7

Journal of Physical Science Pub Date : 2021-08-25 DOI: 10.21315/jps2021.32.2.8

Jan-Michael Cayme, Arturo F. Bermejo, Chris Allen Earl T. Francia, A. N. Asor, E. Miranda

{"title":"Spanish Colonial Period Bricks from Churches in Laguna, Philippines: A Preliminary Chemical Characterisation Using X-ray Diffraction, Energy Dispersive X-ray Fluorescence and Fourier Transform Infrared","authors":"Jan-Michael Cayme, Arturo F. Bermejo, Chris Allen Earl T. Francia, A. N. Asor, E. Miranda","doi":"10.21315/jps2021.32.2.8","DOIUrl":"https://doi.org/10.21315/jps2021.32.2.8","url":null,"abstract":"Spanish Colonial Period brick samples dating to the 19th century from the Municipalities of Liliw and Pagsanjan in Laguna, Philippines was investigated. These samples were obtained from two church structures, a church bell tower from Liliw and a church convent from Pagsanjan. Combined X-ray diffraction (XRD), energy dispersive X-ray fluorescence (EDXRF) and Fourier transform infrared (FTIR) spectroscopy allowed the determination of chemical elements and minerals attributed to clay and sand, such as montmorillonite, quartz, corundum, hematite and calcite. On the basis of these compositions, the possible kilning conditions employed to fire the bricks during manufacture was also proposed. MATLAB™ programme was utilised in this study to interpret the data from XRD and FTIR to rationalise the overlapping peaks in the spectrum. Results show that both brick samples were made of clay material that is non-calcareous with low refractory. The firing was performed in an oxidising atmosphere or an open-air environment at an estimated temperature of between 650°C and 850°C. This preliminary study provides a baseline chemical characterisation data of colonial period bricks in the Philippines which will be useful for future conservation and restoration work not only locally but also within the Southeast Asian region.","PeriodicalId":16757,"journal":{"name":"Journal of Physical Science","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90737758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Mechanical and Structural Properties of Nanocarbon Particles Reinforced in Plasticised Polylactic Acid for High Strength Application 高强塑化聚乳酸增强纳米碳颗粒的力学和结构性能

IF 0.7

Journal of Physical Science Pub Date : 2021-08-25 DOI: 10.21315/jps2021.32.2.4

A. Segun, B. O. Adewuyi, Daramola Oluyemi Ojo, O. Gideon

{"title":"Mechanical and Structural Properties of Nanocarbon Particles Reinforced in Plasticised Polylactic Acid for High Strength Application","authors":"A. Segun, B. O. Adewuyi, Daramola Oluyemi Ojo, O. Gideon","doi":"10.21315/jps2021.32.2.4","DOIUrl":"https://doi.org/10.21315/jps2021.32.2.4","url":null,"abstract":"High strength application of biopolymers requires good mechanical strength. The tensile properties of polylactic acid (PLA) are relatively low for major industrial applications such as packaging, biomedical and automobile spare parts. In this study, the mechanical strength of polylactic acid was enhanced with nanocarbon isolated from diesel engine combustion soot. The isolated nanocarbon was characterised using spectrometry and Fourier transform infrared (FTIR) spectroscopy analysis. After that, the nanocarbon was used as a reinforcement in plasticised PLA to produce a composite. The PLA-nanocarbon composite was produced using the compression moulding technique. The nanocarbon composition was varied between 2 wt% and 8 wt% in the PLA matrix. The tensile, hardness and morphological properties of the composite were analysed with the tensile test, hardness test, optical microscope and X-ray diffraction (XRD) analysis. The ultraviolet (UV) spectrometer and FTIR analysis results confirmed the successful isolation of nanocarbon from the diesel engine combustion soot. The tensile and hardness properties of the PLA matrix increased with addition of nanocarbon. The morphological images showed good miscibility between the PLA and the nanocarbon reinforcement, responsible for the increase in mechanical properties. The potential use of the composite for high strength application showed great possibility based on the result obtained.","PeriodicalId":16757,"journal":{"name":"Journal of Physical Science","volume":"6 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75148834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

The Effects of Zinc Oxide (ZnO) Quantum Dots (QDs) Embedment on thePhysicochemical Properties and Photocatalytic Activity of Titanium Dioxide(TiO2) Nanoparticles 氧化锌(ZnO)量子点(QDs)包埋对二氧化钛(TiO2)纳米粒子物理化学性质和光催化活性的影响

IF 0.7

Journal of Physical Science Pub Date : 2021-08-25 DOI: 10.21315/jps2021.32.2.6

A. Iqbal, U. Saidu, Farook Adam, S. Sreekantan, Normawati Jasni, M. Ahmad

引用次数: 5

Synthesis and Characterisations of Reduced Graphene Oxide Prepared by Microwave Irradiation with Sonication 微波辐照-超声法制备还原性氧化石墨烯的合成与表征

IF 0.7

Journal of Physical Science Pub Date : 2021-08-25 DOI: 10.21315/jps2021.32.2.1

Fika Fauzi, Fayyad Azizi, M. M. Musawwa, W. Dwandaru

{"title":"Synthesis and Characterisations of Reduced Graphene Oxide Prepared by Microwave Irradiation with Sonication","authors":"Fika Fauzi, Fayyad Azizi, M. M. Musawwa, W. Dwandaru","doi":"10.21315/jps2021.32.2.1","DOIUrl":"https://doi.org/10.21315/jps2021.32.2.1","url":null,"abstract":"Recently, reducing graphene oxide (GO) through microwave irradiation has been extensively explored in order to scale up the mass production of graphene. We report the simple technique to reduce GO by means of microwave irradiation combined with a sonication technique. The microwave-reduced GO (MWrGO) is formed by exposing a microwave onto GO powder in order to reduce the oxygen functional group and then followed by exfoliating via a sonication method. The time exposure of the microwave irradiation was 20 min with the powers of 450 W and 800 W. The UV-visible (UV-vis) spectra showed the evolution of GO into MWrGO indicated by the red shift of the absorption peak from 230 nm to 267 nm and disappearance of the shouldering peak at 300 nm. The reduction of the oxygen functional group has been proved by Fourier transform infrared (FTIR) spectra. Furthermore, the scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS) data demonstrated further confirmation of the reduction of GO and the formation of basal planes of sp2 carbon clusters of the sample due to the treatment. The EDS spectra revealed that the MWrGO by 800-W-irradiation had much less oxygen functional groups and much more carbon content than GO. The proposed synthesis method is simple and readily controlled for a mass production of graphene from GO.","PeriodicalId":16757,"journal":{"name":"Journal of Physical Science","volume":"135 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77982565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Co-precipitation Synthesis with a Variation of the Sulphur Composition of Kesterite Phase Cu2ZnSnS4 (CZSS) without Annealing Process 无退火条件下Kesterite相Cu2ZnSnS4 (CZSS)硫组分变化的共沉淀法合成

IF 0.7

Journal of Physical Science Pub Date : 2021-08-25 DOI: 10.21315/jps2021.32.2.3

K. Pal, D. Maurya, P. Chaudhary, K. Thapa, B. Yadav

{"title":"Co-precipitation Synthesis with a Variation of the Sulphur Composition of Kesterite Phase Cu2ZnSnS4 (CZSS) without Annealing Process","authors":"K. Pal, D. Maurya, P. Chaudhary, K. Thapa, B. Yadav","doi":"10.21315/jps2021.32.2.3","DOIUrl":"https://doi.org/10.21315/jps2021.32.2.3","url":null,"abstract":"Commercially available compound CuInGa (S, Se) can be replaced with emerging quaternary compound Cu2ZnSnS4 (Copper Zinc Tin Sulphur or CZSS) for photovoltaic applications due to the high absorption coefficient and optimum bandgap. Unstable sulphur and the co-existence of binary and ternary phases in CZSS are the main obstacles for a single-phase kesterite quaternary compound. To overcome these issues, the researchers are synthesising the CZSS in presence of sulphur and selenium environment. The sulphurization and selenization are the constraints for the synthesis of CZSS and these processes make it costlier. In the present work, the wet-chemical method (i.e., co-precipitation method) was used to synthesise CZSS without vacuum annealing where the sulphur constituent was controlled by changing the stoichiometric ratio. X-ray diffraction (XRD) and Raman analysis confirm that the synthesised CZSS was in polycrystalline and single-phase kesterite nature. The average crystallite sizes for thiourea 16, 18, 20 mmol were found 15 nm, 17 nm and 17 nm, respectively. Surface morphology of the as-prepared film was identified by scanning electron microscope (SEM) and optical bandgap of the film was obtained ~1.33 eV by UV-visible (UV-vis) analysis. The 18 mmol of thiourea with stoichiometric ratio 4:2:2:9 is found the best optimisation for synthesising the CZSS without vacuum annealing by the co-precipitation method. Thus, the thin film of such synthesised CZSS may be employed for the low-cost photovoltaic application.","PeriodicalId":16757,"journal":{"name":"Journal of Physical Science","volume":"14 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85636463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Green Synthesis of Zinc Oxide Nanoparticles Using Ixora Coccinea Leaf Extract for Ethanol Vapour Sensing 绿色合成氧化锌纳米颗粒乙醇蒸汽传感的研究

IF 0.7

Journal of Physical Science Pub Date : 2021-08-25 DOI: 10.21315/jps2021.32.2.2

L. Joshi, Bal Vikram Khatri, Sumana Gyawali, Shiromani Gajurel, D. K. Chaudhary

{"title":"Green Synthesis of Zinc Oxide Nanoparticles Using Ixora Coccinea Leaf Extract for Ethanol Vapour Sensing","authors":"L. Joshi, Bal Vikram Khatri, Sumana Gyawali, Shiromani Gajurel, D. K. Chaudhary","doi":"10.21315/jps2021.32.2.2","DOIUrl":"https://doi.org/10.21315/jps2021.32.2.2","url":null,"abstract":"This article reports the effects of natural plant proteins on the morphology of zinc oxide nanoparticles (ZnONPs) prepared via a precipitation method. Green synthesised ZnONPs have a wide range of uses such as biomedical applications, water purification, optical devices and gas sensors. The non-toxic and economical technique described in this article is favourable for large-scale production too. ZnONPs were produced from a zinc acetate precursor with dye extract of Ixora Coccinea (IC) leaves as a capping agent. The as-prepared ZnONPs were characterised by X-ray diffraction (XRD), Fourier transform infrared (FTIR), UV-visible (UV-vis), scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) techniques. The XRD analysis showed an average crystallite size of 23 nm. The SEM analysis revealed a reduction in aggregation of ZnO crystallites due to addition of dye extracts of IC. EDX and UV-vis results confirmed the formation of pure ZnONPs. Finally, the gas sensing properties of ZnO films, prepared by doctor blade method, were used to detect ethanol vapour. The results showed gas response ratios of 28.7 and 5.4 at 800 ppm and 40 ppm exposure, respectively. Furthermore, the response time and recovery time were found to be 24 sec and 47 sec, respectively at 200 ppm exposure of ethanol vapour.","PeriodicalId":16757,"journal":{"name":"Journal of Physical Science","volume":"32 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85548122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6