Pure and Applied Chemistry最新文献

The impact of nanofiller composition and nature on the enhancement of mechanical and rheological properties of poly(lactic acid) (PLA) nanobiocomposite films is achieved by regulating the spacing of organic fillers and PLA crystallinity 通过调节有机填料的间距和聚乳酸的结晶度，研究纳米填料的组成和性质对提高聚乳酸纳米生物复合膜的机械和流变特性的影响

IF 1.8 4区化学

Pure and Applied Chemistry Pub Date : 2024-09-11 DOI: 10.1515/pac-2024-0253

Zoulikha Khiati, Soufiane Guella, Lahouari Mrah, Abdelmoumin Mezrai

{"title":"The impact of nanofiller composition and nature on the enhancement of mechanical and rheological properties of poly(lactic acid) (PLA) nanobiocomposite films is achieved by regulating the spacing of organic fillers and PLA crystallinity","authors":"Zoulikha Khiati, Soufiane Guella, Lahouari Mrah, Abdelmoumin Mezrai","doi":"10.1515/pac-2024-0253","DOIUrl":"https://doi.org/10.1515/pac-2024-0253","url":null,"abstract":"This study examines the morphology and various thermal, mechanical, and rheological properties of polylactic acid (PLA)-based nanobiocomposites. The objective of this investigation is to evaluate the potential of modified Algerian clay as a nanofiller through an examination of the characteristics of PLA/Mag-CTA and PLA/CMC nanobiocomposites with varying levels of prepared fillers. This study is concerned with the synthesis of poly(lactic acid)/Maghnite-CTA (PLA/Mag-CTA) and poly(lactic acid)/microcrystalline cellulose (CMC) nanobiocomposites, with two distinctive catalysts and organic reinforcements produced in solution. The outcomes of the various techniques employed demonstrate that PLA nanobiocomposites exhibit a mixed morphology, comprising intercalation and exfoliation. The results from the diverse techniques used show that the PLA nanobiocomposites developed have a mixed intercalated-exfoliated morphology. The dispersion of the Maghnite-CTA filler and microcrystalline cellulose was enhanced during the production of the various materials, as well as the presence of aggregates at high levels. The best rheological performance, corresponding to the optimal dispersion of the nanofiller, was observed for a low quantity of organic filler. Thermal behavior properties were significantly enhanced with the incorporation of the two nanofillers. Analysis by steric exclusion chromatography showed that the fillers used in the nanobiocomposite synthesis increased the average molecular weights of the PLA chains, while the polydispersity index remained constant.","PeriodicalId":20911,"journal":{"name":"Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Green chemistry for all: three principles of Inclusive Green and Sustainable Chemistry Education 全民绿色化学：全纳绿色和可持续化学教育的三项原则

IF 1.8 4区化学

Pure and Applied Chemistry Pub Date : 2024-08-30 DOI: 10.1515/pac-2024-0245

Carlos Alberto da Silva Júnior, Gildo Girotto Júnior, Carla Morais, Dosil Pereira de Jesus

{"title":"Green chemistry for all: three principles of Inclusive Green and Sustainable Chemistry Education","authors":"Carlos Alberto da Silva Júnior, Gildo Girotto Júnior, Carla Morais, Dosil Pereira de Jesus","doi":"10.1515/pac-2024-0245","DOIUrl":"https://doi.org/10.1515/pac-2024-0245","url":null,"abstract":"The three principles of Inclusive Green and Sustainable Chemistry Education (IGSCE) are presented to guide the reflection, design, and implementation of potentially inclusive materials and approaches. These principles refer to (i) embracing student-centered learning, (ii) promoting teaching in the five levels of representation in chemistry, and (iii) adapting the curriculum to empower students to apply their academic skills effectively to real-life situations through supportive teaching and social guidance. Educational elements conducive to potentially inclusive classrooms and their interconnections are identified and discussed. These include using the Triangular Bipyramid Metaphor (TBM) to facilitate academic inclusivity for individuals with and without disabilities, such as those who are deaf and blind. Further, the importance of ensuring that all students, regardless of their abilities, can fully participate in the educational experience is highlighted, aligning with Sustainable Development Goal 4 (SDG #4) to achieve inclusive education and lifelong learning opportunities. Green chemistry should be available to everyone, not just a few. It promotes sustainable development and deserves global recognition and support. The change agents targeted by these three principles of IGSCE include, but are not limited to, educators, researchers, teachers, and students in secondary and university education.","PeriodicalId":20911,"journal":{"name":"Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The case of the disappearing energy: potential energies in concentration gradients 消失的能量：浓度梯度中的势能

IF 1.8 4区化学

Pure and Applied Chemistry Pub Date : 2024-08-26 DOI: 10.1515/pac-2024-0220

Lee D. Hansen, Brian F. Woodfield, H. Dennis Tolley

引用次数: 0

Outreach in coordinated individual events: the GCS format of CNR Italy 在协调的个别活动中开展外联：意大利国家科学研究中心的 GCS 模式

IF 1.8 4区化学

Pure and Applied Chemistry Pub Date : 2024-08-22 DOI: 10.1515/pac-2024-0238

Elisa Carignani, Augusta Maria Paci, Silvia Borsacchi, Maurizio Peruzzini

{"title":"Outreach in coordinated individual events: the GCS format of CNR Italy","authors":"Elisa Carignani, Augusta Maria Paci, Silvia Borsacchi, Maurizio Peruzzini","doi":"10.1515/pac-2024-0238","DOIUrl":"https://doi.org/10.1515/pac-2024-0238","url":null,"abstract":"Global Conversation on Sustainability (GCS) 2023 was enthusiastically welcomed by researchers of the National Research Council of Italy (CNR). Highly committed to international organizations such as IUPAC and ISC, the promoters participated to the 2023 edition of the Global Conversation on Sustainability hosting a local in person event held in one of the major CNR institute for chemistry research. The format was a round-table discussion involving colleagues of different age, gender, experience, and area of expertise, who participated to an informal dialogue with the aim of reflecting and sharing aspects of the respective research activities contributing to sustainable development goals. From many chemistry research areas, it emerged a wide range of subjects, which stimulated an interesting and purpose-oriented discussion. Therefore, GCS 2023 at CNR prompted a reflection on how improving chemists’ impact on sustainability including laboratories’ practises and on considering communication becoming part of scientific process. Transformation requires continuous investment in research and innovation and evolving scientific activities, but also requires synergies, collaborations and policy making on cross-cutting issues that can make this successful. Global initiatives as GCS, in the framework of international scientific organizations, represent a key global vehicle for enhancing the big area of science communication. Overcoming time and spatial limitations, these initiatives enable to link global and locally tailored in person events.","PeriodicalId":20911,"journal":{"name":"Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","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 recycling and reprocessing ability of self-healing natural rubber based on ionic crosslink network 基于离子交联网络的自愈合天然橡胶的回收和再加工能力研究

IF 1.8 4区化学

Pure and Applied Chemistry Pub Date : 2024-08-19 DOI: 10.1515/pac-2024-0025

Mohd Hafiz Zainol, Raa Khimi Shuib, Ismail Ibrahim, Fairul Sharin Abd Razak, Noor Faezah Mohd Sani, Trans Dai Lam

引用次数: 0

Method development for multielement determination of halogens and sulfur in teas 茶叶中卤素和硫的多元素测定方法开发

IF 1.8 4区化学

Pure and Applied Chemistry Pub Date : 2024-07-31 DOI: 10.1515/pac-2024-0219

Marcia F. Mesko, Larissa C. A. Costa, Jenifer H. Cerqueira, Fernanda P. Balbinot, Filipe S. Rondan

{"title":"Method development for multielement determination of halogens and sulfur in teas","authors":"Marcia F. Mesko, Larissa C. A. Costa, Jenifer H. Cerqueira, Fernanda P. Balbinot, Filipe S. Rondan","doi":"10.1515/pac-2024-0219","DOIUrl":"https://doi.org/10.1515/pac-2024-0219","url":null,"abstract":"Microwave-induced combustion was evaluated as a sample preparation method for several types of tea (black, green, lemon balm, boldo, and mint) for further determination of bromine, chlorine, fluorine, iodine, and sulfur by ion chromatography. Parameters such as the sample mass efficiently decomposed and the most suitable absorbing solution (ultrapure water and 25, 50, 100, and 150 mmol L−1 NH4OH) were evaluated, considering the characteristics of the analytes and the determination technique used. The maximum sample mass possible to be decomposed was 900 mg of milled tea in the form of pellets, and the absorbing solution chosen was 100 mmol L−1 NH4OH, which provided suitable stabilization of the analytes (recoveries between 95 % and 103 %). To assess the accuracy of the proposed method, a certified reference material (BCR 060, aquatic plant) was analyzed. Agreements with the certified values ranged from 101 % to 107 %. The proposed method was used to analyze tea samples and the concentrations ranged from 549 to 2,549 mg kg−1 for chlorine, 223 to 828 mg kg−1 for fluorine, and 786 to 4,023 mg kg−1 for sulfur; bromine and iodine concentrations were below the limits of quantification (42 and 80 mg kg−1, respectively) in all evaluated samples.","PeriodicalId":20911,"journal":{"name":"Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141867282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Paths and synergies in accelerating the UN 17 SDGs through the lens of green chemistry: contributions from a Brazilian university and its Institute of Chemistry 通过绿色化学视角加快实现联合国 17 项可持续发展目标的途径和协同作用：巴西一所大学及其化学研究所的贡献

IF 1.8 4区化学

Pure and Applied Chemistry Pub Date : 2024-07-31 DOI: 10.1515/pac-2024-0232

Cintia D. F. Milagre, Humberto M. S. Milagre, Dulce Helena S. Silva, Victor Hugo O. Cavalcanti, Laerte Ganeo Neto

引用次数: 0

Comprehensive evaluation of the impact of ionic liquid incorporation on the optical properties, Urbach energy, thin film morphology, and surface roughness of poly(vinyl chloride) based on ionic materials 全面评估离子液体的加入对基于离子材料的聚氯乙烯的光学特性、厄巴赫能、薄膜形态和表面粗糙度的影响

IF 1.8 4区化学

Pure and Applied Chemistry Pub Date : 2024-07-30 DOI: 10.1515/pac-2024-0227

Evon Akram, Alaa A. Rashad, Mokdad Hayawi Rahman, Rasheed N. Abed, Mohammed Al-Baidhani, Ali Basem, Mohammed Kadhom, Muna S. Bufaroosha, Abas Hadawey, Emad Yousif

{"title":"Comprehensive evaluation of the impact of ionic liquid incorporation on the optical properties, Urbach energy, thin film morphology, and surface roughness of poly(vinyl chloride) based on ionic materials","authors":"Evon Akram, Alaa A. Rashad, Mokdad Hayawi Rahman, Rasheed N. Abed, Mohammed Al-Baidhani, Ali Basem, Mohammed Kadhom, Muna S. Bufaroosha, Abas Hadawey, Emad Yousif","doi":"10.1515/pac-2024-0227","DOIUrl":"https://doi.org/10.1515/pac-2024-0227","url":null,"abstract":"A newly synthesis composite thin films of poly(vinyl chloride) has been refinement with ionic liquid, where PVC dissolved in THF with various concentrations of IL by casting method to form the composite thin films, without any reaction and IL dangles within PVC matrix. The thin films were examined by the diffusive reflectance device under the wavelength range (238–1300 nm). The XRD, EDX, and AFM techniques were utilized to discover the structure of the PVC matrix after additive IL. The XRD analysis illustrated the amorphous structure of the films, while the EDS analysis illustrated the main composition of pure PVC and composite PVC/IL. The optical properties and optical parameters were studied. The reflectance, extinction factor, transmittance, and imaginary dielectric constant declined, the absorption value was between (80–89 %), and the refractive index, real dielectric constant, and optical conductivity were increased. The indirect energy gap declined from 4.2 eV to 2.2 eV and the direct energy gap declined from 3.7 eV to 2.6 eV. The Urbach energy was increased from 2.09 eV to 15.45 eV revealing an increase in the disorders of electrons. The E d increased from 23.42 eV to 70.68 eV and E o increased from 7.00 eV to 10.88 eV. AFM analysis illustrated the roughness of the films increased after additive IL to the PVC Matrix from 1.08 nm to 4.45 nm and the root mean square of the particles ranged from 1.57 nm to 5.56 nm. The PVC composite thin films are utilized in solar cell and sodium-ion battery applications.","PeriodicalId":20911,"journal":{"name":"Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141867283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis, characterization and antioxidant screening of a 1,10-phenanthroline-based tetraza-macrocyclic ligand and its nickel complex with therapeutic potential and catalytic significance 具有治疗潜力和催化作用的 1,10-菲罗啉基四氮杂大环配体及其镍配合物的合成、表征和抗氧化筛选

IF 1.8 4区化学

Pure and Applied Chemistry Pub Date : 2024-07-17 DOI: 10.1515/pac-2024-0212

Emmanuel C. Ohaekenyem, Ikenna Onyido

{"title":"Synthesis, characterization and antioxidant screening of a 1,10-phenanthroline-based tetraza-macrocyclic ligand and its nickel complex with therapeutic potential and catalytic significance","authors":"Emmanuel C. Ohaekenyem, Ikenna Onyido","doi":"10.1515/pac-2024-0212","DOIUrl":"https://doi.org/10.1515/pac-2024-0212","url":null,"abstract":"In this study, we present a synthetic route for the preparation of a novel 1,10- phenanthroline-based tetraza-macrocyclic ligand, 5,12,25,28-tetraazaheptacyclo [14.8.4.2⁴,⁷.210,13.0⁶,11.019,27.022,26]dotriaconta-1 (25),4,6,8,10,12,16(28),17,19(27),20,22(26),23,29, 31-tetradecaene, 3 and its corresponding nickel complex, (28Z)-1,3,6,31-tetraaza-2-nickelaoctacyclo [17.9.3.2⁷,28.0³,16.0⁴,13.0⁵, 10.022,30.025,29]tritriaconta-4(13),5(10),6,8,11,14,16,19(31),20,22(30), 23,25(29),26,28(32)-tetradecaene, 8. The ligand was synthesized via a condensation reaction involving 2,9-dimethyl-1,10-phenanthroline and 2,9-dicarbaldehyde-1,10 phenanthroline, followed by nickel metal complexation. Fourier-transformed infrared (FT-IR) spectroscopy, gas chromatography-mass spectrometry (GC-MS), 1H and 13C nuclear magnetic resonance (NMR) spectroscopy, and thermal analyses were employed to characterize the ligand and its Ni complex. Their ADMET parameters and potential macromolecular targets calculations showed they have therapeutic potentials. The antioxidant assay shows that Ni-complex is approximately 9 times more potent than the ligand with IC50 values of 0.045 mg/ml and 0.404 mg/ml, respectively. Their microspecies distribution which was predicted using ChemAxon Predictor revealed their catalytic potentials The reaction mechanisms involved are discussed. The 1,10-phenanthroline-based macrocyclic ligand and its nickel complex significantly expand the structural diversity within the tetraza-macrocyclic ligand system and serve as base ligands for the development of possible derivatives, with concomitant applicability in drug development and catalysis.","PeriodicalId":20911,"journal":{"name":"Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141745999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comprehensive evaluation of physical properties and carbon dioxide capacities of new 2-(butylamino)ethanol-based deep eutectic solvents 全面评估新型 2-(丁氨基)乙醇基深共晶溶剂的物理性质和二氧化碳容量

IF 1.8 4区化学

Pure and Applied Chemistry Pub Date : 2024-07-17 DOI: 10.1515/pac-2024-0228

Bartosz Nowosielski, Marzena Jamrógiewicz, Iwona Cichowska-Kopczyńska, Dorota Warmińska

{"title":"Comprehensive evaluation of physical properties and carbon dioxide capacities of new 2-(butylamino)ethanol-based deep eutectic solvents","authors":"Bartosz Nowosielski, Marzena Jamrógiewicz, Iwona Cichowska-Kopczyńska, Dorota Warmińska","doi":"10.1515/pac-2024-0228","DOIUrl":"https://doi.org/10.1515/pac-2024-0228","url":null,"abstract":"The aim of this research was to assess the impact of the components of alkanolamine deep eutectic solvents (DESs) on the physical properties of those DESs and their carbon dioxide capacity. To achieve this goal, novel deep eutectic solvents were synthesized by using 2-(butylamino)ethanol (BAE) as the hydrogen bond donor (HBD), along with tetrabutylammonium bromide TBAB), tetrabutylammonium chloride (TBAC), or tetraethylammonium chloride (TEAC) as the hydrogen bond acceptors (HBA) at various molar ratios (1:6, 1:8, and 1:10). To confirm the presence of hydrogen bond interactions between the components Fourier Transform Infrared Spectroscopy measurements were conducted. Furthermore, thermal properties, including melting points and thermal stability, of these deep eutectic solvents as well as key physical properties, such as density, viscosity, refractive index, and sound velocity, within the temperature range of 293.15–333.15 K and at a pressure of 0.1 MPa were examined. The effect of the molar ratio of HBA to HBD, the type of anion, and the length of the alkyl chain were studied and analysed in regard to physicochemical properties. In this work, the solubility of carbon dioxide in DESs derived from 2-(butylamino)ethanol, 3-aminopropan-1-ol (AP), and 2-(methylamino)ethanol (MAE) was measured. The highest CO2 capacity was found for TEAC:MAE 1:10 DES characterized by the shortest alkyl chain length in both HBA and HBD molecules, the highest amine content, and the lowest viscosity. Additionally, the effect of water addition on carbon dioxide solubility was explored. The results showed that the influence of water on CO2 solubility varies with the type of DES. In general, this work highlighted that DESs can serve as effective media for carbon dioxide capture, and their performance can be tailored by changing the type of hydrogen bond acceptor or donor, their molar ratio and by the addition of water.","PeriodicalId":20911,"journal":{"name":"Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141740788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0