Journal of Technomaterial Physics最新文献

The Effect of Fe3O4 Addition on the Density and Porosity of Cellulose Nanofiber Aerogel Extracted by Oil Palm Trunk 添加Fe3O4对油棕树干提取的纤维素纳米纤维气凝胶密度和孔隙率的影响

Journal of Technomaterial Physics Pub Date : 2023-08-31 DOI: 10.32734/jotp.v5i2.12328

D. Barus, Anindya Chandra Faizah

{"title":"The Effect of Fe3O4 Addition on the Density and Porosity of Cellulose Nanofiber Aerogel Extracted by Oil Palm Trunk","authors":"D. Barus, Anindya Chandra Faizah","doi":"10.32734/jotp.v5i2.12328","DOIUrl":"https://doi.org/10.32734/jotp.v5i2.12328","url":null,"abstract":"This study investigates the influence of Fe3O4 addition on cellulose nanofiber aerogels' density and porosity characteristics. The cellulose nanofiber aerogels were synthesized with varying concentrations of Fe3O4: 0%, 0.25%, 0.5%, 0.75%, and 1%. The characterization of the cellulose nanofiber aerogels included physical tests to determine density and porosity and Fourier transform infrared (FTIR) analysis for functional group analysis. The results reveal a progressive increase in density from the lowest to the highest Fe3O4 concentrations: 0.115 g/cm3, 0.135 g/cm3, 0.162 g/cm3, 0.163 g/cm3, and 0.241 g/cm3 for Fe3O4 concentrations of 0%, 0.25%, 0.5%, 0.75%, and 1%, respectively. Similarly, the porosity of the cellulose nanofiber aerogels exhibited a trend of decreasing values from the lowest to the highest Fe3O4 concentrations: 90.808%, 89.499%, 88.064%, 87.764%, and82.844% for Fe3O4 concentrations of 0%, 0.25%, 0.5%, 0.75%, and 1%, respectively. Furthermore, FTIR analysis indicated that the structural integrity of the cellulose aerogels remained unchanged even after the incorporation of Fe3O4 . While no new functional groups emerged, a discernible shift in wave numbers suggests the formation of bonds between the polymer network and Fe3O4 . So, adding Fe3O4 to cellulose nanofiber aerogels led to notable alterations in density and porosity, while FTIR analysis confirmed the establishment of bonds between the polymer network and Fe3O4 without causing significant structural changes.","PeriodicalId":323487,"journal":{"name":"Journal of Technomaterial Physics","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128679684","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 Electrochemical Characterization of Sodium-Ion Battery Anode Carbon Biomassa Based on Sunflower Seed Husk (Helianthus annuus) 基于葵花籽壳的钠离子电池负极炭生物质的合成及电化学表征

Journal of Technomaterial Physics Pub Date : 2023-08-31 DOI: 10.32734/jotp.v5i2.12394

Renaldo Simanjuntak, None Dinda Amilia, None Syahrul Humaidi, None Achmad Subhan

{"title":"Synthesis and Electrochemical Characterization of Sodium-Ion Battery Anode Carbon Biomassa Based on Sunflower Seed Husk (Helianthus annuus)","authors":"Renaldo Simanjuntak, None Dinda Amilia, None Syahrul Humaidi, None Achmad Subhan","doi":"10.32734/jotp.v5i2.12394","DOIUrl":"https://doi.org/10.32734/jotp.v5i2.12394","url":null,"abstract":"This study aimed to synthesize materials from the carbon biomass of sunflower seed husk (Helianthus annuus) for sodium ion battery anode. A simple carbonization process was carried out by roasting. The chemical activation process was conducted by adding KOH as much as 4 M in 100 mL water solution for 20 hours. Then drying was done in the oven at a temperature of 100°C for 20 hours, and then continued with the sintering process at a temperature of 900°C for 2 hours. The sintered results were washed and hydrothermal for 20 hours at 200°C with 4 mL H2O2 and 1 mL EG in 50 mL Teflon. The resulting acid degree was neutralized (pH ~ 7) with distilled water and then dried at 100°C for 20 hours. The hydrothermal powder was pulverized using a mortar and pestle and then sieved on a 325 mesh sieve. Anode sheets were prepared by mixing active ingredients : PVDF : Super-P with a composition of 85 : 10 : 5 by adding 2 mL of DMAC solvent. Electrochemical characterization testing was carried out to see the resulting performance. The results obtained from EIS, CV, and CD show that commercial hard carbon is better.","PeriodicalId":323487,"journal":{"name":"Journal of Technomaterial Physics","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135890936","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

Manufacture of Polymer Concrete Based on Snake-Fruit Seeds (Salacca zalacca) and Sawdust with Polyester Resin as an Adhesive 以蛇果籽和锯末为基材，以聚酯树脂为粘合剂制备聚合物混凝土

Journal of Technomaterial Physics Pub Date : 2023-08-31 DOI: 10.32734/jotp.v5i2.12380

Mahdi Jauhar Harahap, Z. Sitorus

{"title":"Manufacture of Polymer Concrete Based on Snake-Fruit Seeds (Salacca zalacca) and Sawdust with Polyester Resin as an Adhesive","authors":"Mahdi Jauhar Harahap, Z. Sitorus","doi":"10.32734/jotp.v5i2.12380","DOIUrl":"https://doi.org/10.32734/jotp.v5i2.12380","url":null,"abstract":"This study aims to determine the effect of adding snake-fruit (Salacca zalacca) seeds and sawdust on polymer concrete's physical and mechanical properties. The results showed that the highest physical properties were 1.27 g/cm3 density, 12.5% porosity, and 13.22% water absorption. The lowest physical properties are a density of 0.85 g/cm3, porosity of 2.65%, and water absorption of 2.07%. The highest mechanical properties are compressive strength of 16.70 MPa, tensile strength of 4.39 MPa, and flexural strength of 7.93 MPa. The lowest mechanical properties are compressive strength of 6.80 MPa, tensile strength of 1.11 MPa, and flexural strength of 1.50 MPa. SEM test results showed that the microstructure of polymer concrete showed differences between concrete samples A1 (consisting of 35 g of snake-fruit seeds, 15 g of sawdust, and 15 g of polyester resin) and polymer concrete samples B1 (consisting of 30 g of snake-fruit seeds, 15 g of sawdust, and 20 g of polyester resin). The SEM analysis of the A1 concrete sample reveals a dark surface color and conspicuous white lumps, which are attributed to polyester resin and arise from inadequate mixing of ingredients. In the case of sample B1, a higher concentration of visible resin lumps is observed.","PeriodicalId":323487,"journal":{"name":"Journal of Technomaterial Physics","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121814456","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

The Effect of Using a Combination of Sorbitol and Glycerol Plasticizers on the Characterization of Edible Film from Porang (Amorphophallus oncophyllus) Starch 山梨糖醇与甘油复合增塑剂对茯苓淀粉可食性薄膜表征的影响

Journal of Technomaterial Physics Pub Date : 2023-08-31 DOI: 10.32734/jotp.v5i2.12397

A. Maghfirah, Sudiati Sudiati, Silvya Nurrein K. Br Sitepu, Meutia Widyanti

引用次数: 0

Improving Reading Accuracy of ACS712 Current Sensor with ATmega328 10-Bit ADC: Enhancing Resolution to 5Ma/BIT via AD620 Differential Amplifier and Kalman Filters 采用ATmega328 10位ADC提高ACS712电流传感器的读取精度:通过AD620差分放大器和卡尔曼滤波器将分辨率提高到5Ma/BIT

Journal of Technomaterial Physics Pub Date : 2023-08-31 DOI: 10.32734/jotp.v5i2.11355

Josefan Osbert Pardede, Kurnia Brahmana

{"title":"Improving Reading Accuracy of ACS712 Current Sensor with ATmega328 10-Bit ADC: Enhancing Resolution to 5Ma/BIT via AD620 Differential Amplifier and Kalman Filters","authors":"Josefan Osbert Pardede, Kurnia Brahmana","doi":"10.32734/jotp.v5i2.11355","DOIUrl":"https://doi.org/10.32734/jotp.v5i2.11355","url":null,"abstract":"The study focuses on the development of a current measuring device that incorporates the ACS712 current sensor, enhances the reading sensitivity of the ACS712 current sensor from 27mA/bit to 5mA/bit through the implementation of an AD620 differential amplifier, and employs a Kalman filter for improved accuracy. This increase in current uses a differential amplifier AD620. An increase in the sensitivity of the reading is carried out by utilizing the initial value of the ACS712 sensor when it has not been connected to the circuit or an offset of 512 to 0 so that 10bit ADC data can be utilized to measure 4880 mV/A so that the accuracy of reading 1-bit data is equal to 4, 8 mV/mA after being given a gain of 26.5 times. The signal enhanced from the AD620 will be filtered using the Kalman filter program so that the signal generated after the increase will be stable, and the current value that has been read will be displayed on the LCD screen. Based on the analysis results, the ACS712 current sensor can effectively measure up to 5mA/bit stably using the AD620 differential amplifier and Kalman filter.","PeriodicalId":323487,"journal":{"name":"Journal of Technomaterial Physics","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127114790","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

Enhancing Biodegradable Plastics' Physical Properties Through the Incorporation of Talas Beneng Starch (Xanthosoma undipes K. Koch) and Glycerol as a Plasticizer 用塔拉斯贝能淀粉和甘油增塑剂增强生物可降解塑料的物理性能

Journal of Technomaterial Physics Pub Date : 2023-08-31 DOI: 10.32734/jotp.v5i2.12390

A. Maghfirah, Sudiati Sudiati, Silvia Ramadina, Dwi Ajeng Pratiwi

引用次数: 0

Preparation and Characterization of Chitosan/Reduced Graphene Oxide Film as a Sensing Material 壳聚糖/还原氧化石墨烯传感材料的制备与表征

Journal of Technomaterial Physics Pub Date : 2023-08-31 DOI: 10.32734/jotp.v5i2.13306

Ardiansyah Sembiring, Irwana Nainggolan, None Andriayani

引用次数: 0

Determination of Air Stability Parameter Threshold Value for Cumulonimbus and Thunderstorm Cloud Events at Kualanamu Meteorological Station 库兰纳木气象站积雨云和雷雨云事件空气稳定性参数阈值的确定

Journal of Technomaterial Physics Pub Date : 2023-08-31 DOI: 10.32734/jotp.v5i2.12487

Rajab Prima, Fendy Arifianto, Yosafat Donni H, Avrionesti Avrionesti

引用次数: 0

Solar-Based Smartphone Charging Stations with Voltage, Current, and Power Monitoring 具有电压、电流和功率监测的太阳能智能手机充电站

Journal of Technomaterial Physics Pub Date : 2023-08-31 DOI: 10.32734/jotp.v5i2.13348

Z. Noer, Muhammad Jundi Fathurrahman, Annisa Novita Putri Siregar, Misuki Awanda, Muhammad Abduh Akram Agus, Lolo Ferdinan Siahaan

{"title":"Solar-Based Smartphone Charging Stations with Voltage, Current, and Power Monitoring","authors":"Z. Noer, Muhammad Jundi Fathurrahman, Annisa Novita Putri Siregar, Misuki Awanda, Muhammad Abduh Akram Agus, Lolo Ferdinan Siahaan","doi":"10.32734/jotp.v5i2.13348","DOIUrl":"https://doi.org/10.32734/jotp.v5i2.13348","url":null,"abstract":"Renewable energy sources continue to be developed as alternative energy sources to reduce the use of fossil energy sources. One of them is a solar power plant that uses a light source from sunlight. For the public, electrical energy is useful to support work and communication activities such as using smartphones, but not many chargers are found in public places to charge smartphone batteries. It has designed and implemented a smartphone charging station to charge smartphone batteries using solar power. The smartphone battery charging on this smartphone charging station can display voltage, current, and power when charging the battery;this tool is equipped with an INA219 sensor, ATmega328 microcontroller, and solar power to make this tool look smart. The purpose of making this tool is to find out the working principle, voltage, current, and power and compare the charging time of the smartphone battery between the smartphone charging station and the manufacturer's charger. The working principle is that when this tool charges the smartphone battery, the INA219 sensor receives output value data in the form of current and voltage. Furthermore, the sensor sends a signal to the ATmega328 to be converted and displayed as data on the LCD so that users can see the output value. The test results of the tool, when charging a smartphone battery using Micro USB, showed the average values of voltage, current, and power, respectively, of 11.7 volts, 0.48 amperes, and 5.98 watts. USB Type C shows the average voltage, current, and power values of 11.33 volts, 0.71 amperes, and 8.37 watts, respectively. The comparison of the duration of battery charging time on the manufacturer's Micro USB with the smartphone charging station has a difference of 27 minutes; the comparison of the duration of the smartphone battery charging time using the manufacturer's USB Type C with the smartphone charging station has a difference of 22 minutes.","PeriodicalId":323487,"journal":{"name":"Journal of Technomaterial Physics","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122253322","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

Manufacture and Characterization of Adsorbers Utilizing Pahae Natural Zeolite-Chicken Eggshell for Purifying Used Cooking Oil 利用Pahae天然沸石-鸡壳净化废油吸附剂的制备及性能研究

Journal of Technomaterial Physics Pub Date : 2023-08-31 DOI: 10.32734/jotp.v5i2.13349

S. Susilawati, Bella Alfira

{"title":"Manufacture and Characterization of Adsorbers Utilizing Pahae Natural Zeolite-Chicken Eggshell for Purifying Used Cooking Oil","authors":"S. Susilawati, Bella Alfira","doi":"10.32734/jotp.v5i2.13349","DOIUrl":"https://doi.org/10.32734/jotp.v5i2.13349","url":null,"abstract":"This research investigates the synthesis and characterization of Pahae natural zeolite-chicken eggshell adsorber to refine used cooking oil. The primary objective is to develop effective adsorbents for enhancing the quality of used cooking oil through refining. The methodology involves sieving the zeolite through a 74 µm sieve, chemically activating it using a 10% KOH solution for 1 hour and drying it at 100°C. The eggshells are also sieved through a 74 µm sieve, followed by washing and drying at 105°C for 12 hours. Various combinations of natural zeolite and chicken eggshell compositions (100% : 0%, 0%: 100%, 95%: 5%, 90%: 10%, 85%: 15%, 80%: 20%) are then prepared and pressed using a hydraulic press under a load mass of 6 tons for 10 minutes. The resultant samples are further activated by heat treatment at 600°C for 2 hours. The adsorbents undergo a comprehensive characterization process, encompassing physical properties (porosity and water absorption), mechanical properties (hardness), surface morphology (SEM), elemental composition (XRF), X-ray diffraction (XRD) analysis, and practical applications assessment (density, viscosity, moisture content, color, and odor). The optimal adsorbent configuration is identified as 80% natural zeolite and 20% chicken eggshell composition, activated at 600°C, exhibiting a porosity of 81.54% and an oil absorption of 46.86%. The highest hardness value of 119.64 MPa is achieved with 100% natural zeolite composition at 600°C. SEM analysis indicates an average pore diameter of 1.232 µm, while XRF results highlight calcium (Ca) as the predominant element at 49.64%. XRD analysis confirms the formation of a rhombohedral crystal structure.","PeriodicalId":323487,"journal":{"name":"Journal of Technomaterial Physics","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131377699","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