Journal of Physical Science最新文献_第5页

RF Sputtered ZnO Nanoballs on Porous Substrate for Highly Sensitive NO2 Gas Sensing Applications 多孔基板上射频溅射ZnO纳米球用于高灵敏度NO2气敏应用

IF 0.7

Journal of Physical Science Pub Date : 2022-08-25 DOI: 10.21315/jps2022.33.2.1

Pankaj Varshney, Vinay Kumar, Pankaj R. Singh, Ramphal Sharma, Arvind Kumar

引用次数: 0

Performance and Analysis of a Designed Magnetic Lens for Microscopic Applications 一种设计用于显微应用的磁透镜的性能与分析

IF 0.7

Journal of Physical Science Pub Date : 2022-08-25 DOI: 10.21315/jps2022.33.2.8

Emad H. Ahmed, Adnan K. Hasan

引用次数: 0

Incorporation of Nanoparticles Based on Zingiber Officinale Essential Oil into Alginate Films for Sustained Release 基于铁皮姜精油纳米颗粒的海藻酸盐膜缓释研究

IF 0.7

Journal of Physical Science Pub Date : 2022-08-25 DOI: 10.21315/jps2022.33.2.7

N. Rosli, German A. Islan, R. Hasham, Guillermo R. Castro, Azila Abdul Aziz

{"title":"Incorporation of Nanoparticles Based on Zingiber Officinale Essential Oil into Alginate Films for Sustained Release","authors":"N. Rosli, German A. Islan, R. Hasham, Guillermo R. Castro, Azila Abdul Aziz","doi":"10.21315/jps2022.33.2.7","DOIUrl":"https://doi.org/10.21315/jps2022.33.2.7","url":null,"abstract":"This research focused on the formulation of Ca2+ cross-linked alginate (Alg) gels containing Zingiber officinale oil extract (ZOE) loaded into a nanostructured lipid carrier (NLC). The NLC is intended to protect the Zingiber officinale oil against physical and chemical degradation during topical administration to sustain the drug release and reduce drug leakage during storage. The NLC was prepared using hot homogenisation and ultrasonication of glyceryl monostearate. Virgin coconut oil was used as the liquid lipid. The NLC-ZOE had a mean size diameter of 100 nm and a zeta potential value of −40 mV. The ZOE released from NLC followed the Korsmeyer- Peppas model case I (Fickian diffusion). The NLC-ZOE formulation was then incorporated into Alg. The gels were prepared via ionotropic gelation in the presence of calcium. Scanning electron microscopy (SEM) images of Alg films revealed successful intercalation of NLC within the Alg matrix. The in vitro ZOE release from NLC-ZOEAlg occurred in a sustained manner from the cross-linked Alg hydrogels compared to the free NLC. The profiles of NLC-ZOE released from the Alg films depended on the nanoparticles amount. The results demonstrated the importance of designing a local delivery system to entrap and control the release of the bioactive components of ZOE from within the Alg matrix. Ca2+ cross-linked Alg gels containing ZOE loaded into NLC was found to be suitable for topical delivery applications, as shown by the sustained release of ZOE from calcium cross-linked Alg films containing NLC that was demonstrated in this study.","PeriodicalId":16757,"journal":{"name":"Journal of Physical Science","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73449716","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: 0

Leather-Like Material Based on Natural Rubber Composites 基于天然橡胶复合材料的类皮革材料

IF 0.7

Journal of Physical Science Pub Date : 2022-04-25 DOI: 10.21315/aos2022.33.1.5

Karn Sourprae, E. Kalkornsurapranee, N. Lehman, Arthittaya Chuaybamrung, A. Tuljittraporn, Y. Nakaramontri, A. Krainoi, J. Johns, L. Songtipya, N. Uthaipan

{"title":"Leather-Like Material Based on Natural Rubber Composites","authors":"Karn Sourprae, E. Kalkornsurapranee, N. Lehman, Arthittaya Chuaybamrung, A. Tuljittraporn, Y. Nakaramontri, A. Krainoi, J. Johns, L. Songtipya, N. Uthaipan","doi":"10.21315/aos2022.33.1.5","DOIUrl":"https://doi.org/10.21315/aos2022.33.1.5","url":null,"abstract":"This research was conducted to study x-ray and gamma radiation shielding parameters such as mass attenuation coefficient, mean free path, half value layer, tenth value layer, effective atomic numbers, effective electron density for the xBi2O3-(95-x)B2O3-5BaO (where x = 20 mol%, 35 mol%, 50 mol%, and 70 mol%) glass systems with different molar composition. The studied ceramic specimens were denoted by BB20, BB35, BB50 and BB70 and their density values were 4.438 g/cm3, 5.973 g/cm3, 7.156 g/cm3, and 8.005 g/cm3, respectively. Radiation shielding parameters of the samples were investigated by using web based XCOM programme. The obtained results revealed that the highest mass attenuation coefficients were reported for BB70 sample, which has the highest Bi2O3 additive in its chemical structure. At 7 MeV photon energy, half value layer (HVL) values were reported as 5.7812 cm, 3.8065 cm, 2.8533 cm, and 2.2457 cm for BB20, BB35, BB50 and BB70, respectively. Therefore, it can be concluded that the present bismuth sesquioxide based glasses in the Bi2O3-B2O3-BaO glass system have a good quality in radiation protection purposes. Therefore, this glass system can be used as an alternative to conventional materials with the right molar compositon in its chemical formation.","PeriodicalId":16757,"journal":{"name":"Journal of Physical Science","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88341506","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

Study of Physico-Chemical Properties and Growth Dimension Augmentation of Barium Succinate Single Crystals Grown by Slow Evaporation Technique 慢蒸发法制备琥珀酸钡单晶的理化性质及生长尺寸增大研究

IF 0.7

Journal of Physical Science Pub Date : 2022-04-25 DOI: 10.21315/jps2022.33.1.3

Christy D. S., Sahaya Shajan X., Mahadevan C. K.

引用次数: 0

Assessment of the Mechanical Properties of Hybrid Polymer Composites for Denture Applications 复合材料在义齿中的力学性能评价

IF 0.7

Journal of Physical Science Pub Date : 2022-04-25 DOI: 10.21315/jps2022.33.1.6

J. K. Oleiwi, A. A. Mohammed

引用次数: 0

Sensing Performance of a ZnO-based Ammonia Sensor 基于zno的氨传感器的传感性能研究

IF 0.7

Journal of Physical Science Pub Date : 2022-01-01 DOI: 10.21315/jps2022.33.1.7

D. K. Chaudhary, Yogesh Singh Maharjan, Sanju Shrestha, Surendra Maharjan, S. Shrestha, L. Joshi

{"title":"Sensing Performance of a ZnO-based Ammonia Sensor","authors":"D. K. Chaudhary, Yogesh Singh Maharjan, Sanju Shrestha, Surendra Maharjan, S. Shrestha, L. Joshi","doi":"10.21315/jps2022.33.1.7","DOIUrl":"https://doi.org/10.21315/jps2022.33.1.7","url":null,"abstract":"Monitoring and remediation of toxic and flammable gases have become a critical task for the development of a clean society. Among various types of metal oxide semiconductors (MOS), zinc oxide (ZnO) is considered a potential material for gas sensing application because of its high sensitivity, easy synthesis, and high thermal stability behaviours. This research aimed to gain an in-depth understanding of the sensing task of a very stable and porous thin film of spin coated ZnO for detecting toxic ammonia vapour at room temperature. As-prepared ZnO films were characterised by x-ray diffraction (XRD), scanning electron microscopy (SEM), and ultraviolet-visible (UV-vis) analyses. XRD and SEM results revealed the polycrystalline wurtzite ZnO phase with grainy surface morphology. Optical calculations quantify the direct band gap of ZnO as 3.2 eV. The sensitivity measurements showed a good response ratio of 38.5 ± 0.6 with an exposure of 400 ppm of ammonia vapour. The results on sensitivity measurement of several cycles illustrated its stability and sensing performance better than other reported similar works. These findings will be useful to develop a low cost and efficient room temperature MOS gas sensor that can efficiently detect extremely low concentrations as 20 ppm of ammonia vapour which is below the Occupational Safety and Health Administration (OSHA) recommended value.","PeriodicalId":16757,"journal":{"name":"Journal of Physical Science","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77867617","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

Fracture Toughness of Poly (Methyl Methacrylate)/Hydroxyapatite Denture Base Composite: Effect of Planetary Ball Milling Mixing Time 聚甲基丙烯酸甲酯/羟基磷灰石基托复合材料的断裂韧性:行星球磨混合时间的影响

IF 0.7

Journal of Physical Science Pub Date : 2021-11-25 DOI: 10.21315/jps2021.32.3.8

Jamal Moammar Aldabib, Z. M. Mohd Ishak

{"title":"Fracture Toughness of Poly (Methyl Methacrylate)/Hydroxyapatite Denture Base Composite: Effect of Planetary Ball Milling Mixing Time","authors":"Jamal Moammar Aldabib, Z. M. Mohd Ishak","doi":"10.21315/jps2021.32.3.8","DOIUrl":"https://doi.org/10.21315/jps2021.32.3.8","url":null,"abstract":"Hydroxyapatite (HA) has great potential as a reinforcing filler for poly (methyl methacrylate) (PMMA) denture base materials. Nevertheless, filler particles need to be homogeneously distributed throughout the PMMA particles to get the maximum benefit from using the filler. Therefore, the physical mixing of the powder components (PMMA and the filler) is strongly preferred to provide the required dispersion of the filler in the matrix. However, conventional techniques that have been tried, such as hand mixing and stirrer mixing techniques, were not effective. Therefore, the current study was designed to experimentally investigate the effect of different mixing times on the fracture toughness of PMMA/HA using a developed ball milling method. In this study, heat cured PMMA reinforced with 15 wt% HA ceramic powder was ground for different times (i.e., 10, 20, 30, and 40 min) via the technique of planetary ball milling (PBM). The ground powder mixtures were used for the fabrication of denture base testing samples. The particle size and distribution of the PMMA/HA composites after milling for several times were determined by the laser light scattering technique. The X-ray diffraction (XRD) patterns of the PMMA/HA composites were obtained. However, no new phase was observed. The effects of mixing time using the PBM technique on the fracture toughness were investigated. The effect of mixing time on the microporosity (voids) on the fractured surface of PMMA/HA was studied with field emission scanning electron microscopy (FESEM). Within the limitation of the current study, 30 min is considered the optimum mixing time for the tested PMMA/HA composite.","PeriodicalId":16757,"journal":{"name":"Journal of Physical Science","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74214276","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: 0

Synthesis and Characteristics of Multifunctional Magneto-luminescent Nanoparticles by an Ultrasonic Wave-assisted Stӧber Method 超声辅助Stӧber法制备多功能磁致发光纳米粒子及其特性研究

IF 0.7

Journal of Physical Science Pub Date : 2021-11-25 DOI: 10.21315/jps2021.32.3.6

Tien-Dung Chu, H. Nguyen

引用次数: 0

Conductive Polymer Composites Made from Polypropylene and Recycled Graphite Scrap 用聚丙烯和再生石墨废料制备导电聚合物复合材料

IF 0.7

Journal of Physical Science Pub Date : 2021-11-25 DOI: 10.21315/jps2021.32.3.3

Dylan Jia Yee Tong, S. Koay, M. Chan, K. Tshai, T. K. Ong, Y. Buys

{"title":"Conductive Polymer Composites Made from Polypropylene and Recycled Graphite Scrap","authors":"Dylan Jia Yee Tong, S. Koay, M. Chan, K. Tshai, T. K. Ong, Y. Buys","doi":"10.21315/jps2021.32.3.3","DOIUrl":"https://doi.org/10.21315/jps2021.32.3.3","url":null,"abstract":"Electric Discharge Machining (EDM) process uses electrodes made from graphite that wear out over time and are turned into scrap. In this research, EDM electrode scraps were recycled and turned into graphite powder (rGP). This rGP was used as a conductive filler to produce conductive polymer composite (CPC) material by combining it with polypropylene (PP) resin via melt compounding and compression moulding processes. The percolation threshold of this composite material changed when 30 wt% of rGP was added, whereby the insulative material changed became antistatic. The composite was able to achieve surface resistivity as low as 105 ohm/sq. However, the addition of higher rGP content deteriorated the tensile properties of composite, whereby the tensile strength of composite significantly decreased as compared to neat PP. The results also showed that the tensile modulus of this composite became higher, and the material became more brittle as compared to neat PP. However, the PP/rGP composite with 50 wt% filler content reduced the tensile modulus due to plasticising effect caused by the agglomeration of rGP. The addition of high filler content on PP/rGP composite also caused an increase in processing torque. This was due to the restriction of rGP particles to the melt flow of molten PP. The morphological analysis found that the PP/rGP composites with higher amounts of filler content were highly agglomerated and formed conductivity paths within the PP matrix. The increase of rGP content highly improved the thermal stability of composite. The findings of this study show that the rGP has the potential to be used as a conductive filler for producing conductive composite material.","PeriodicalId":16757,"journal":{"name":"Journal of Physical Science","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79096240","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