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Green Bionanocomposites of Poly(Lactic Acid) (PLA) and Linear Low-Density Polyethylene (LLDPE): Fabrication and Properties 聚乳酸（PLA）和线性低密度聚乙烯（LLDPE）的绿色仿生复合材料：制造与性能
Materials Science Forum Pub Date : 2024-03-22 DOI: 10.4028/p-8e7oya
M. Bijarimi, Tan Joo Yee, La Ode Muhammad Zuhdi Mulkiyan
{"title":"Green Bionanocomposites of Poly(Lactic Acid) (PLA) and Linear Low-Density Polyethylene (LLDPE): Fabrication and Properties","authors":"M. Bijarimi, Tan Joo Yee, La Ode Muhammad Zuhdi Mulkiyan","doi":"10.4028/p-8e7oya","DOIUrl":"https://doi.org/10.4028/p-8e7oya","url":null,"abstract":"This study utilizes a polymer matrix made from a combination of Poly (Lactic Acid) (PLA) and Linear Low-Density Polyethylene (LLDPE). The polymer matrix is then improved by adding a compatibilizer, Polyethylene-graft-maleic anhydride (PE-g-MA), a filler, Recycled Tyre Waste (RTW), and a nano-scale filler, Graphene nanoplatelets (GNPs). Examining how PE-g-MA, RTW, and GNPs influence the binary blend's (PLA/RTW) chemical and thermo-mechanical characteristics is the focus of this study. A twin-screw extruder is used for the melting and intercalating processes. The binary mixture consists of 5% PE-g-MA, five percent RTW, and 3% GNPs. The samples are then pelletized after being cooled to room temperature. Analysis and characterization of the pelletized samples thermal and chemical characteristics follow. After including a compatibilizer, filler, and nanofiller into the bionanocomposite, improved qualities are anticipated.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":" 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140220332","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 Position of Cyano-3-Acetic Acid Electron Withdrawing Group on γ-Mangostin as a Sensitizer on Dye-Sensitized Solar Cells (DSSC): Theoretical Study 作为染料敏化太阳能电池 (DSSC) 的敏化剂，氰基-3-乙酸电子撤回基团的位置对γ-曼戈斯汀的影响：理论研究
Materials Science Forum Pub Date : 2024-03-22 DOI: 10.4028/p-8zxx1r
Zulfa Ahmad Nurkholiq, Sudarlin Sudarlin
{"title":"The Effect of Position of Cyano-3-Acetic Acid Electron Withdrawing Group on γ-Mangostin as a Sensitizer on Dye-Sensitized Solar Cells (DSSC): Theoretical Study","authors":"Zulfa Ahmad Nurkholiq, Sudarlin Sudarlin","doi":"10.4028/p-8zxx1r","DOIUrl":"https://doi.org/10.4028/p-8zxx1r","url":null,"abstract":"Computational research on the influence of the electron acceptor group position of cyano-3-acetic acid on γ-mangostin as a sensitizer in Dye-Sensitized Solar Cell (DSSC) has been carried out with variations in the positions of the atoms O-1, O-2, O-3 and O- 4. The photoelectric properties are known from the HOMO-LUMO energy parameters, UV-Vis absorption, |VRP|, ΔGinject, ΔGreg, τ, LHE and FEDAM. Geometry optimization uses Orca 4.2.1 with a 6-31G* basis set and interpretation uses Avogadro, Chemissian and GaussSum. Ground state optimization uses the DFT-B3LYP method and excited state optimization uses the TD-DFT-B3LYP method. The results showed that the difference in photoelectric properties affected the DSSC performance. O-2 has the best parameters for electron scattering and UV-Vis light with an absorption of 426 nm. O-3 has the best value for excited state lifetime (τ) and coupling constant (|VRP|). O-3 has a weakness in the LHE value. The LHE value for compounds without modification has the best value. Based on the qualitative parameters of the Full-Electron Donor-Acceptor Map (FEDAM) it was found that the ability of cyano-3-acetic acid as an electron acceptor is better at O-2.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":" 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140212918","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
Effects of Gamma Irradiation on the Tensile Properties of 3D-Printed Polycarbonate Acrylonitrile Butadiene Styrene 伽马辐照对三维打印聚碳酸酯-丙烯腈-丁二烯-苯乙烯拉伸性能的影响
Materials Science Forum Pub Date : 2024-03-22 DOI: 10.4028/p-6xqmkv
R. N. M. Delda, R. L. B. del Rosario, B. Tuazon, G. S. Robles, M. V. Villablanca, M. T. Espino, J. R. Dizon
{"title":"Effects of Gamma Irradiation on the Tensile Properties of 3D-Printed Polycarbonate Acrylonitrile Butadiene Styrene","authors":"R. N. M. Delda, R. L. B. del Rosario, B. Tuazon, G. S. Robles, M. V. Villablanca, M. T. Espino, J. R. Dizon","doi":"10.4028/p-6xqmkv","DOIUrl":"https://doi.org/10.4028/p-6xqmkv","url":null,"abstract":"3D printing is now being applied in various research areas due to its ability to produce highly complex parts whenever needed. This is highly helpful in the fields of robotics; radiation environment monitoring and space applications where stand-alone equipment are usually required. In this work, FDM 3D-printed polycarbonate acrylonitrile butadiene styrene (PCABS) samples were subjected to 1 kGy to 9 kGy of gamma irradiation from a Cobalt-60 irradiator. Parameters such as infill density and dose rate were modified to determine the best setting to improve the mechanical characteristics of the 3D-printed thermoplastic. Results show that samples with lower infill density obtain higher ultimate strength when exposed to higher doses of radiation.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":" 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140218627","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
Preparation of Polycurcumin-Modified Graphite Electrode via Electropolymerization and its Application for Determining Cd2+ 通过电聚合制备聚姜黄素改性石墨电极及其在测定 Cd2+ 中的应用
Materials Science Forum Pub Date : 2024-03-22 DOI: 10.4028/p-oxx5yp
S. Marwati, A. Prodjosantoso, R. T. Padmaningrum
{"title":"Preparation of Polycurcumin-Modified Graphite Electrode via Electropolymerization and its Application for Determining Cd2+","authors":"S. Marwati, A. Prodjosantoso, R. T. Padmaningrum","doi":"10.4028/p-oxx5yp","DOIUrl":"https://doi.org/10.4028/p-oxx5yp","url":null,"abstract":"The graphite electrode was changed by applying cyclic voltammetry to electropolymerized curcumin. Then, the polycurcumin-modified graphite electrodes (GECU) were used to determine Cd2+ concentration. The results showed that the GECU electrodes had higher electrocatalytic activity toward Cd2+ than bare graphite electrodes. Furthermore, the effect of the scan rates showed that the electrochemical process controlling the redox behavior of Cd2+ on GECU is a diffusion-controlled electrochemical process. At Cd2+ ranging from 0.22 to 11.03 ppm, the relationship between oxidation peak current (Ip) and Cd2+ concentration follows the linear regression equation of Ip = 73.024[Cd2+] + 722.02 (μA, R2 = 0.9936). It means that under experimental conditions, an increase in Cd2+ from 0.22 to 11.03 ppm can increase the Ip value. On the other hand, At Cd2+ ranging from 11.03 to 55.07 ppm, the relationship between Ip and Cd2+ concentration follows the linear equation of Ip = 24.227[Cd2+] + 1212.6 (μA, R2 = 0.9920). The LOD and LOQ were determined at low Cd2+ concentrations, namely 0.86 ppm, and 2.84 ppm, respectively. Furthermore, the suggested modification has been used successfully and with satisfactory recoveries to determine the presence of Cd2+ in laboratory liquid wastewater.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":" 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140218744","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
Functional and Special Materials, Technologies of Chemical Production 功能材料和特种材料，化工生产技术
Materials Science Forum Pub Date : 2024-03-22 DOI: 10.4028/b-5awocy
Ramesh K. Agarwal, Deny Setiawan, Shofwatul Uyun, Kazuo Umemura
{"title":"Functional and Special Materials, Technologies of Chemical Production","authors":"Ramesh K. Agarwal, Deny Setiawan, Shofwatul Uyun, Kazuo Umemura","doi":"10.4028/b-5awocy","DOIUrl":"https://doi.org/10.4028/b-5awocy","url":null,"abstract":"","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":" 42","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140215399","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
Laboratory Investigation and Empirical Modelling of Polymer Solution Viscosity 聚合物溶液粘度的实验室研究与经验建模
Materials Science Forum Pub Date : 2024-03-22 DOI: 10.4028/p-sd0oki
Yazan Firas Fuad Hussein, Altamish Ahmed Pakeer, R. Muneer, M. Hashmet, Younes Alblooshi
{"title":"Laboratory Investigation and Empirical Modelling of Polymer Solution Viscosity","authors":"Yazan Firas Fuad Hussein, Altamish Ahmed Pakeer, R. Muneer, M. Hashmet, Younes Alblooshi","doi":"10.4028/p-sd0oki","DOIUrl":"https://doi.org/10.4028/p-sd0oki","url":null,"abstract":"Polymer flooding, an improved oil recovery technique, is a well-established method for improving oil production. Although numerous polymers have been suggested in the literature, identifying suitable ones for applications in high-temperature and high-salinity carbonate reservoirs remains a challenging task. The viscosity of polymer solutions depends on various parameters, including polymer concentration, temperature, and shear rate. Therefore, screening polymers for these demanding conditions necessitates meticulous experimental work. In this experimental study, polymer solutions' physical property—viscosity—was measured as a function of polymer concentration, temperature, and shear rate. Subsequently, the generated rheological data were used to develop empirical models capable of predicting the viscosity of polymer solutions under various conditions. An acceptable match was achieved between the experimental and model-predicted data. Furthermore, a validation was conducted for the empirical models, yielding a root mean square error of 1.75. These models will significantly reduce the number of experiments required for the screening process and prove valuable for optimization procedures.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":" 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140217540","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
Investigation on Layer Thickness on Mechanical Properties and Dimension Accuracy in Fused Deposition Modelling 3D Printing 熔融沉积建模三维打印中层厚对机械性能和尺寸精度的影响研究
Materials Science Forum Pub Date : 2024-03-22 DOI: 10.4028/p-3s2pqo
Ming Yi Chen, Rayson Pang, Mun Kou Lai
{"title":"Investigation on Layer Thickness on Mechanical Properties and Dimension Accuracy in Fused Deposition Modelling 3D Printing","authors":"Ming Yi Chen, Rayson Pang, Mun Kou Lai","doi":"10.4028/p-3s2pqo","DOIUrl":"https://doi.org/10.4028/p-3s2pqo","url":null,"abstract":"In the current era of additive manufacturing, Fused Deposition Modelling (FDM) method of printing is being studied extensively to print a concept model. Therefore, the dimensional accuracy and the mechanical properties of the FDM 3D printed part are very important. In this study, the tensile specimens are prepared according to ASTM D638 Type I. Dimensions of the specimen is measured in the x-direction (length), y-direction (width), and z-direction (height) and is compared against the standard measurement for accuracy. Tensile stress, strain at break and Young’s modulus were also investigated. Overall, the dimension accuracy achieved is more than 98%. The highest accuracy is obtained by using 0.2mm layer thickness and 0.2mm initial layer thickness. The tensile stress, Young’s modulus and strain at break are found to decrease when the layer thickness is increased. This is due having more layer with lesser and smaller voids which increases the strength and stiffness. Increasing initial layer thickness, however, has a low influence on the tensile stress but can greatly affect the Young’s modulus.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":" 43","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140212602","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
Using Borax as a Cross-Linking Agent in Poly(Vinyl Alcohol)/Hemp-Extracted Cellulose Hydrogels 在聚乙烯醇/大麻提取纤维素水凝胶中使用硼砂作为交联剂
Materials Science Forum Pub Date : 2024-03-22 DOI: 10.4028/p-s30w1d
Pranithan Silprasert, A. Boonmahitthisud, S. Tanpichai
{"title":"Using Borax as a Cross-Linking Agent in Poly(Vinyl Alcohol)/Hemp-Extracted Cellulose Hydrogels","authors":"Pranithan Silprasert, A. Boonmahitthisud, S. Tanpichai","doi":"10.4028/p-s30w1d","DOIUrl":"https://doi.org/10.4028/p-s30w1d","url":null,"abstract":"This study focused on the preparation of hydrogels of poly (vinyl alcohol) and cellulose extracted from hemp fibers with the aid of borax as a cross-linking agent. Cellulose extracted from hemp fibers was initially dissolved in a mixed solution of urea and NaOH to obtain a cellulose solution. In the meantime, PVA was also dissolved in the urea and NaOH. These two solutions were mixed, and various loadings of borax were introduced. Moreover, the effect of borax loadings on equilibrium water content (EWC) and compression properties of the cross-linked hydrogels was investigated. The cross-linked hydrogels showed an EWC of 95.76% and a compression set of 9.71%, compared to those of the physical cross-linked hydrogels which had an EWC of 92.40% and a compression set of 29.96%. It was found that the chemically crosslinked hydrogels exhibited greater stability compared with physical ones owing to the stronger interaction induced by borax. Therefore, The PVA/cellulose hydrogels cross-linked with borax hold potential in various applications such as wound dressing, wastewater treatment, and agricultural fields.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":" 44","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140216886","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
Rapid and Visual Detection of Vitamin C Based on Sodium Citrate-Stabilized Silver Nanoparticles 基于柠檬酸钠稳定银纳米粒子的维生素 C 快速可视检测技术
Materials Science Forum Pub Date : 2024-03-22 DOI: 10.4028/p-a2dgqn
Indah Nursyamsi Handayani, Vivi Fauzia, A. H. Saputro, N. H. Apriantoro
{"title":"Rapid and Visual Detection of Vitamin C Based on Sodium Citrate-Stabilized Silver Nanoparticles","authors":"Indah Nursyamsi Handayani, Vivi Fauzia, A. H. Saputro, N. H. Apriantoro","doi":"10.4028/p-a2dgqn","DOIUrl":"https://doi.org/10.4028/p-a2dgqn","url":null,"abstract":"Ensuring the vitamin C requirements are met through dietary intake or supplements is essential for health. In this study, a simple and rapid visual detection method for semi-quantitative analysis of vitamin C was proposed based on sodium citrate-stabilized silver nanoparticles (SC-AgNPs). As a validation of SC-AgNPs as a colorimetric sensor for vitamin C, color changes were observed gradually, shifting from transparent yellow to deep brown after the addition of vitamin C at various concentrations. That is also supported by an increase in absorption intensity at the peak wavelength of 417 nm, which was analyzed using a UV-Vis spectrophotometer. Based on the spectral approach method, the linear relationship between absorbance values and vitamin C is in the range of 0-4.2 mM, with a coefficient correlation of 0.99 and sensitivity of 0.95/mM. Furthermore, the feasibility of the SC-AgNPs for vitamin C detection in healthy beverages and tablet pharmaceuticals has been investigated.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":" 40","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140217903","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
Physical and Optical Properties of CeF3 Doped with Aluminium Fluorophosphate Glasses 掺杂氟磷酸铝的 CeF3 玻璃的物理和光学特性
Materials Science Forum Pub Date : 2024-03-22 DOI: 10.4028/p-j6x51c
J. Panggabean, P. Simamora, J. Rajagukguk, Chayani S. Sarumaha, J. Kaewkhao
{"title":"Physical and Optical Properties of CeF3 Doped with Aluminium Fluorophosphate Glasses","authors":"J. Panggabean, P. Simamora, J. Rajagukguk, Chayani S. Sarumaha, J. Kaewkhao","doi":"10.4028/p-j6x51c","DOIUrl":"https://doi.org/10.4028/p-j6x51c","url":null,"abstract":"Glass doped with cerium is an attractive material for a variety of applications. The aluminium fluorophosphate glasses were made by the conventional melt-quenching technique. The glass samples were characterized by density, refractive index, FTIR and photoluminescence spectra. The density was shown to increase, but refractive and molar volume were shown to decrease. The FTIR spectra of these glasses showed mainly [PO3] and [PO4] structural units. Transparency of the glass samples is demonstrated by a transmission intensity in the 70-80% range. Regarding the optical properties, under 307 nm excitation, the emission peak around 348 nm of the CeF3-doped aluminium fluorophosphate glasses was confirmed. The emission would be due to the 5d→4f transitions of Ce3+ ions.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":" 44","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140220677","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
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