Indonesian Journal of Chemistry最新文献_第9页

PLA/LLDPE/Organo-Precipitated Calcium Carbonate Composites Containing LLDPE-g-OA Compatibilizers: Mechanical, Physical, Thermal, and Morphology 含有 LLDPE-g-OA 相容剂的聚乳酸/LLDPE/有机沉淀碳酸钙复合材料：力学、物理、热学和形态学

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Indonesian Journal of Chemistry Pub Date : 2023-12-06 DOI: 10.22146/ijc.86983

A. H. Ritonga, Barita Aritonang, Gusliani Eka Putri, K. Khairiah, Enzo Wiranta Battra Siahaan, Debi Meilani

{"title":"PLA/LLDPE/Organo-Precipitated Calcium Carbonate Composites Containing LLDPE-g-OA Compatibilizers: Mechanical, Physical, Thermal, and Morphology","authors":"A. H. Ritonga, Barita Aritonang, Gusliani Eka Putri, K. Khairiah, Enzo Wiranta Battra Siahaan, Debi Meilani","doi":"10.22146/ijc.86983","DOIUrl":"https://doi.org/10.22146/ijc.86983","url":null,"abstract":"A plastic composite consisting of polylactic acid (PLA), linear low-density polyethylene (LLDPE), oleic acid-grafted linear low-density polyethylene (LLDPE-g-OA) compatibilizer, and organo-precipitated calcium carbonate (O-PCC) have been successfully made in the molten state. This study aims to characterize the mechanical, physical, thermal, and morphological characteristics of the PLA/LLDPE/O-PCC plastic composite in the presence of an LLDPE-g-OA compatibilizer. The plastic composite was prepared by blending PLA, LLDPE, LLDPE-g-OA, and O-PCC using an internal mixer with a heating of 160 °C and a rotation of 100 rpm. LLDPE and LLDPE-g-OA are put together into the inner mixer chamber until melted, followed by PLA and O-PCC. The most optimum plastic composite composition is PLA/LLDPE/LLDPE-g-g-OA/O-PCC (67.5:22.5:5:5). The mechanical properties showed an increase in tensile strength of 9.78 MPa. The physical properties showed that the minimum water absorption was 0.74%, the biodegradation in humus soil showed a degradation rate of 0.09% per day, and the thermal properties showed better stability with a melting point of 146.5 °C. The FTIR spectrum is similar to the polymer blend without O-PCC. The morphology indicates that the composite is compatible and homogeneous. This semi-biodegradable plastic composite has significant implications for reducing the accumulation of plastic waste in the environment.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138984591","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

Spectrophotometric Determination of Amoxicillin Using New Organic Reagent via Different Analytical Methods 使用新型有机试剂通过不同分析方法测定阿莫西林的分光光度法

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Indonesian Journal of Chemistry Pub Date : 2023-12-06 DOI: 10.22146/ijc.83903

Helen Abd Alhassan Mahmood, Rulla Sabah, N. K. Abood

{"title":"Spectrophotometric Determination of Amoxicillin Using New Organic Reagent via Different Analytical Methods","authors":"Helen Abd Alhassan Mahmood, Rulla Sabah, N. K. Abood","doi":"10.22146/ijc.83903","DOIUrl":"https://doi.org/10.22146/ijc.83903","url":null,"abstract":"New and simple spectrophotometric method was applied for amoxicillin determination by oxidative coupling with an organic reagent 1-(4-aminophenyl)-3-(5-(4-nitrophenyl)-furan-2-yl)-yl)-prop-2-en-1-one (H) to form an orange colored dye with λmax of 490 nm. The molecular structure of the new compound H was characterized using spectral analysis including 1H-NMR, FTIR, Mass spectroscopy, and UV-visible. The concentration range of oxidative coupling obeyed Beer's law was 2–50 μg/mL, the correlation coefficient was 0.9995, molar absorptivity was 0.63 × 104 L/mol cm, and the detection limit was 0.189 μg/mL. The concentration range of flow injection obeyed Beer's law was 1–150 μg/mL, the correlation coefficient was 0.9994, molar absorptivity was 0.295 × 104 L/mol cm, and the detection limit was 0.407 μg/mL. The proposed method was successfully applied in pharmaceutical formulation for amoxicillin determination. The results showed that amoxicillin could be reacted with a new compound H in the alkaline medium in the presence of oxidative agent NaIO4 and automated by flow injection analysis. The proposed methods have the advantage of simple, fast, very sensitive, good precision and accuracy. The suggested technique was effectively used to estimate amoxicillin in both its pure form and pharmaceutical formulations.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138984396","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

Green Synthesis of New Heterocyclic Surfactant Compounds by Multicomponent Reactions and Their Antibacterial and Corrosion Inhibitor, Study on Carbon Steel Alloy in Acid Media 2 M HCl 通过多组分反应绿色合成新型杂环表面活性剂化合物及其抗菌缓蚀剂，在酸性介质 2 M HCl 中对碳钢合金的研究

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Indonesian Journal of Chemistry Pub Date : 2023-12-06 DOI: 10.22146/ijc.80347

Raneen Salim Al-Hilfi, Najlaa Zaki Al-Ameri, Mouhanad Jwad Al-Asadi

{"title":"Green Synthesis of New Heterocyclic Surfactant Compounds by Multicomponent Reactions and Their Antibacterial and Corrosion Inhibitor, Study on Carbon Steel Alloy in Acid Media 2 M HCl","authors":"Raneen Salim Al-Hilfi, Najlaa Zaki Al-Ameri, Mouhanad Jwad Al-Asadi","doi":"10.22146/ijc.80347","DOIUrl":"https://doi.org/10.22146/ijc.80347","url":null,"abstract":"Heterocyclic 1,4-di(1,3,5-dithiazinan-5-yl)benzene (D) and two heterocyclic-cationic Gemini surfactant 5,5'-(1,4-phenylene)bis(5-decyl-1,3,5-dithiazinan-5-ium)bromide (E) and 5,5'-(1,4-phenylene)bis(5-tetradecyl-1,3,5-dithiazinan-5-ium)bromide (F) were prepared and identified by FTIR, 1H-NMR spectroscopies, and GC–MS. Then, they were tested as corrosion inhibitors against carbon steel corrosion in 2.0 M aggressive HCl medium at 25 and 50 °C. They have different carbon chain tails, i.e., E (10 carbons), and F (14 carbons). These new heterocyclic and surfactant categories as corrosion inhibitors. The corrosion process has been studied electrochemically (Tafel Plot). The inhibition efficiency clarified that the decrease in IE(%) is in the order of F > E > D. The biological activity of compounds D and F was investigated using the aforementioned drilling procedure with a cork drill. At a dosage of 3000 mcg/mL, the biological action of compound D demonstrated effective resistance against the two types of negative bacteria. The cation has a diameter of 20 mm against E. coli and 19 mm against S. epidermis bacteria. At the same concentration, the chemical F is solely effective against E. coli with an inhibition diameter of 14 mm.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138984457","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

Sonochemical and Mechanochemical Synthesis of Alcohols from Aldehydes and Ketones 以醛类和酮类为原料合成醇类的声化学和机械化学反应

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Indonesian Journal of Chemistry Pub Date : 2023-12-06 DOI: 10.22146/ijc.82943

Indah Mutiara Putri, Ferlana Debbora Dachi, D. Fitriastuti, M. Mardjan

引用次数: 0

Phenolic Compounds from Moroccan Retama monosperma L. Boiss, Berberis vulgaris L. and Ricinus communis L.: Characterization, Antioxidant Activity and Performance Criteria of the Validated Method Using UHPLC/DAD/ESI-MS 摩洛哥小檗（Retama monosperma L.Boiss）、非洲小檗（Berberis vulgaris L.）和蓖麻（Ricinus communis L.）中的酚类化合物：使用超高效液相色谱/二相色谱/电喷雾串联质谱（UHPLC/DAD/ESI-MS）鉴定方法的特征、抗氧化活性和性能标准

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Indonesian Journal of Chemistry Pub Date : 2023-12-06 DOI: 10.22146/ijc.87157

Meriem Outaki, M. Zefzoufi, Amal Sammama, Khadija El Gadali, R. Fdil, Layla El Gaini

{"title":"Phenolic Compounds from Moroccan Retama monosperma L. Boiss, Berberis vulgaris L. and Ricinus communis L.: Characterization, Antioxidant Activity and Performance Criteria of the Validated Method Using UHPLC/DAD/ESI-MS","authors":"Meriem Outaki, M. Zefzoufi, Amal Sammama, Khadija El Gadali, R. Fdil, Layla El Gaini","doi":"10.22146/ijc.87157","DOIUrl":"https://doi.org/10.22146/ijc.87157","url":null,"abstract":"Components of medicinal plants have many pharmacological activities, including antioxidant activity, playing an important role in limiting oxidative stress that can cause several damages. This paper characterizes polyphenols of Retama monosperma L., Berberis vulgaris L. and Ricinus communis L. plant extracts and evaluates their antioxidant activity by DPPH, conjugated diene and TBARS assay. To ensure the quality of analytical results, this paper presents performance criteria of the validated method using UHPLC/DAD/ESI-MS. Regarding method validation, the results confirm different used tests and evaluate detection and quantification limits. Concerning the characterization and study of antioxidant activity, realized testing showed that R. monosperma is rich in isoflavone, flavone and flavonol. For R. communis, we notice the presence of rutin as a major compound. Meanwhile, B. vulgaris contains significant amounts of gallic acid and p-coumaric acid. These plant extracts have high antioxidant activity due to the presence of phenolic compounds.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138984609","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

Integration of Copperas and Moringa oleifera Seeds as Hybrid Coagulant for Turbidity and Ammonia Removal from Aquaculture Wastewater 将 Copperas 和 Moringa oleifera 种子作为混合混凝剂用于去除水产养殖废水中的浊度和氨氮

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Indonesian Journal of Chemistry Pub Date : 2023-12-06 DOI: 10.22146/ijc.83634

Sofiah Hamzah, N. Rasit, Nurul Aqilah Mohamad, M. Harun, A. A. Azmi, N. Hairom, Ahmad Ariff Fahmi Mustofa, Mohd Salleh Amri Zahid, N. Yatim, N. Kasan

{"title":"Integration of Copperas and Moringa oleifera Seeds as Hybrid Coagulant for Turbidity and Ammonia Removal from Aquaculture Wastewater","authors":"Sofiah Hamzah, N. Rasit, Nurul Aqilah Mohamad, M. Harun, A. A. Azmi, N. Hairom, Ahmad Ariff Fahmi Mustofa, Mohd Salleh Amri Zahid, N. Yatim, N. Kasan","doi":"10.22146/ijc.83634","DOIUrl":"https://doi.org/10.22146/ijc.83634","url":null,"abstract":"The rapid development of the aquaculture industry has contributed to the high amount of nutrients in wastewater that subsequently led to eutrophication and deterioration of water quality. Aquaculture wastewater consists of uneaten fish feed, fecal and other excretion or residue of chemicals used. Thus, this study aimed to evaluate the performance of hybrid coagulants of Moringa oleifera (MO) and copperas for aquaculture wastewater treatment. In this present study, different formulations of MO and copperas were explored in the coagulation treatment of aquaculture wastewater using a jar test experiment. The FTIR and SEM analysis are used to determine the morphology and surface of MO. This study focuses on the effect of coagulant aids formulation, coagulant dosage, the effect of initial pH and coagulation time on turbidity and ammonia removal in the coagulation of aquaculture wastewater. The finding shows that the highest removal of turbidity and ammonia was obtained with the use of 80% MO and 20% copperas at the condition of initial pH of 6 at 20 min of coagulation time, with the highest percentage removal of 66% and 91%, respectively. The coagulation isotherm of hybrid coagulant 80:20 is well described with the Freundlich isotherm model which describes the surface heterogeneity.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138984007","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

Improving the Electrical Conductivity of the Composite Comprising Bismuth Oxide, Activated Carbon, and Graphite for Use as a Battery Anode 提高由氧化铋、活性碳和石墨组成的复合材料的导电性以用作电池阳极

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Indonesian Journal of Chemistry Pub Date : 2023-12-06 DOI: 10.22146/ijc.74155

Yayuk Astuti, F. A. Zaqia, Aulia Zahra Ekaningsih, Gunawan Gunawan, Adi Darmawan

引用次数: 0

Organic Geochemical Characteristics of Ngrayong Formation Polaman Sediment Rock, Northeast Java Basin-Indonesia 印度尼西亚爪哇盆地东北部恩格拉勇地层波拉曼沉积岩的有机地球化学特征

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Indonesian Journal of Chemistry Pub Date : 2023-12-06 DOI: 10.22146/ijc.83534

Y. Zetra, R. Burhan, S. Sulistiyono, Arizal Firmansyah, Darin Salsabila

{"title":"Organic Geochemical Characteristics of Ngrayong Formation Polaman Sediment Rock, Northeast Java Basin-Indonesia","authors":"Y. Zetra, R. Burhan, S. Sulistiyono, Arizal Firmansyah, Darin Salsabila","doi":"10.22146/ijc.83534","DOIUrl":"https://doi.org/10.22146/ijc.83534","url":null,"abstract":"A study of the sedimentary rocks of the Ngrayong formation has been carried out on five samples from the Polaman outcrop point to determine the potential of coal as a source rock for producing oil and gas through GC-MS analysis. Biomarker analysis shows the presence of n-alkanes (C16-C36) with a bimodal distribution, indicating that the source of organic material in sedimentary rocks comes from bacteria, algae, and vascular plants, which is supported by several parameters such as CPI, OEP, LHCPI, wax index, ACL and AlkTerr values. This dominant source of terrigenous organic matter is also proven by the TAR value, C31/C19, C29/C17 ratio, and several aromatic compounds and their derivatives. Bacterial input as an organic source of allouchtonic sedimentary rocks is also proven by the presence of hopanoid, de-A-lupane biomarkers, and C17/C31 ratio. The oxic deposition environment is indicated by the Pr/Ph ratio. CPI and OEP parameters, C29 bb/ab ratio > 0.15 and C31 22S/(22S+22R) < 1 indicate low maturity of the sediment sample. Several parameters and the presence of biomarkers stated above conclude that Ngrayong coal as a source rock has the potential to produce oil and gas.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138984523","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 Characterization of Oligomer Bis(trans-2,3-dibromo-4-hydroxy-2-butenyl)terephthalate as a Green Corrosion Inhibitor on Mild Steel in 1 M H3PO4 Solution 作为 1 M H3PO4 溶液中低碳钢绿色缓蚀剂的对苯二甲酸二（反式-2,3-二溴-4-羟基-2-丁烯基）低聚物的合成与表征

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Indonesian Journal of Chemistry Pub Date : 2023-12-06 DOI: 10.22146/ijc.84060

R. J. Tuama

{"title":"Synthesis and Characterization of Oligomer Bis(trans-2,3-dibromo-4-hydroxy-2-butenyl)terephthalate as a Green Corrosion Inhibitor on Mild Steel in 1 M H3PO4 Solution","authors":"R. J. Tuama","doi":"10.22146/ijc.84060","DOIUrl":"https://doi.org/10.22146/ijc.84060","url":null,"abstract":"Poly(ethylene terephthalate) (PET) waste was depolymerized by trans-2,3-dibromo-2-butene-1,4-diol in the presence of manganese acetate as a catalyst using microwave irradiation as opposed to the conventional heating process in order to reduce the time required for PET depolymerization. The depolymerization product bis(trans-2,3-dibromo-4-hydroxy-2-butenyl)terephthalate (BDBHBT) was isolated, characterized, and evaluated as a green inhibitor for mild corrosion steel in corrosive 1 M H3PO4 medium. This product was characterized using FTIR and 1H-NMR. The effects of immersion time, inhibitor concentration, and reaction temperature were studied. The chemical technique utilized in this study was weight loss, while the electrochemical technique employed an open circuit potential. With 0.6 g/L of BDBHBT inhibitor, the highest corrosion inhibition efficiency of 83.3% was observed. The kinetic and thermodynamic functions were calculated, and the results indicated that the investigated inhibitor was physically adsorbed on the surface and confirmed to the Langmuir adsorption isotherm. This study aims to lessen pollution of the environment by transforming PET waste to a beneficial oligomer BDBHBT and estimating the inhibitory effect of this product on the corrosion of mild steel in 1 M H3PO4.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138984051","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 Optimization and Antibacterial Performance of Colloidal Silver Nanoparticles in Chitosan 壳聚糖中胶体银纳米粒子的合成优化与抗菌性能

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Indonesian Journal of Chemistry Pub Date : 2023-12-06 DOI: 10.22146/ijc.84822

Endang Susilowati, Lina Mahardiani, Sri Retno Dwi Ariani, Ilham Maulana Sulaeman

{"title":"Synthesis Optimization and Antibacterial Performance of Colloidal Silver Nanoparticles in Chitosan","authors":"Endang Susilowati, Lina Mahardiani, Sri Retno Dwi Ariani, Ilham Maulana Sulaeman","doi":"10.22146/ijc.84822","DOIUrl":"https://doi.org/10.22146/ijc.84822","url":null,"abstract":"Colloidal silver nanoparticles were successfully synthesized via the chemical reduction method. The synthesis used AgNO3 as the precursor, chitosan as the reducing and stabilizing agents, and NaOH as the accelerator. The synthesis parameters were optimized. The samples were tested with a UV-vis spectrophotometer to observe their localized surface plasmon resonance (LSPR) phenomenon, a transmission electron microscope (TEM), and a particle size analyzer (PSA) to investigate their particle shape and size distribution. Further, silver nanoparticles were tested for their storage stability and antibacterial performance. The UV-vis spectroscopy data exhibited that the silver nanoparticles have been successfully synthesized, validating via the emergence of the LSPR absorption band at 402–418 nm. At 50 °C, the optimum synthesis was achieved for 100 min of reaction time by adding 0.033 M NaOH and AgNO3 4.00% (w/w, AgNO3/chitosan). TEM results showed spherical silver nanoparticles of 1–8 nm, while the PSA results exhibited particles sizes of about 12–59 nm. The colloidal silver nanoparticles were stable in storage for 8 weeks and had good antibacterial performance against E. coli, S. aureus, extended-spectrum beta-lactamases (ESBL), and methicillin-resistant S. aureus (MRSA). Therefore, colloidal silver nanoparticles have the potential as a material for medical applications.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138984119","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