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Stimuli Responsive Hydrogels: NIPAM/AAm/Carboxylic Acid Polymers 刺激反应水凝胶:NIPAM/AAm/羧酸聚合物
IF 0.5
Acta Chemica Iasi Pub Date : 2019-12-01 DOI: 10.2478/achi-2019-0012
Yasemin Işıkver, Dursun Saraydın
{"title":"Stimuli Responsive Hydrogels: NIPAM/AAm/Carboxylic Acid Polymers","authors":"Yasemin Işıkver, Dursun Saraydın","doi":"10.2478/achi-2019-0012","DOIUrl":"https://doi.org/10.2478/achi-2019-0012","url":null,"abstract":"Abstract Stimuli-responsive hydrogels (SRH) were prepared by using monomers (i.e. N-isopropyl acrylamide; NIPAM and acrylamide; AAm), co-monomers (i.e. methacrylic acid; MPA or mesaconic acid; MFA) and a crosslinker (N, N’-methylene bisacrylamide; N-Bis). SRH have been prepared by thermal free radical polymerization reaction in aqueous solution. Spectroscopic and thermal analyses such as Fourier Transform Infrared Spectroscopy, thermogravimetric analysis and differential scanning calorimetry analysis were performed for SRH characterization. The equilibrium swelling studies by gravimetrically were carried out in different solvents, at the solutions, temperature, pH, and ionic strengths to determine their effect on swelling characteristic of the hydrogels. In addition, cycles equilibrium swelling studies were made with the solutions at different temperatures and at different pH. NIPAM/AAm hydrogel exhibits a lover critical solution temperature (LCST) at 28 oC, whereas NIPAM/AAm-MPA and NIPAM/AAm-MFA hydrogels exhibit a LCST at 31 C and 35 oC, respectively, and the LCST of NIPAM/AAm-MFA hydrogel is close to the body temperature.","PeriodicalId":6958,"journal":{"name":"Acta Chemica Iasi","volume":"54 1","pages":"155 - 184"},"PeriodicalIF":0.5,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91152009","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
Treatment of Real Textile Wastewater Using Electron Beam Irradiation 电子束辐照处理纺织废水的研究
IF 0.5
Acta Chemica Iasi Pub Date : 2019-12-01 DOI: 10.2478/achi-2019-0019
N. N. Duy, Dang Van Phu, Nguyen Thi Kim Lan, N. T. Duoc, N. Q. Hien, Bui Nghia Hiep, B. N. Han, B. Ha
{"title":"Treatment of Real Textile Wastewater Using Electron Beam Irradiation","authors":"N. N. Duy, Dang Van Phu, Nguyen Thi Kim Lan, N. T. Duoc, N. Q. Hien, Bui Nghia Hiep, B. N. Han, B. Ha","doi":"10.2478/achi-2019-0019","DOIUrl":"https://doi.org/10.2478/achi-2019-0019","url":null,"abstract":"Abstract Textile wastewater is known to have a large number of hazardous pollutants, intense color and high chemical oxygen demand (COD) concentration. The electron beam method is considered useful in treatment textile wastewater through chemical oxidation process. In this study, three real textile wastewaters (Sample 1: Reactive Black 5, Reactive Red 10, and Reactive Orange 13; Sample 2: Reactive Red 10 and Yellow GR; Sample 3: Reactive Black 5 and Turquoise Blue HF–G) from textile dyeing company in Ho Chi Minh city were treated by electron beam method. The effect of absorbed doses and hydrogen peroxide (H2O2) at different concentrations on the change of pH, removal capacity, COD and five day’s biological oxygen demand (BOD5) were investigated. The results indicated that color, COD, BOD5 and pH decreased with increasing absorbed dose. A sufficient amount of H2O2 in the radiation process could accelerate the color removal process. In the same condition, a color removal efficiency of ~90% was obtained with EB/H2O2, in contrast with color loss by using EB alone (~71%). These results highlighted the potential of EB radiation technology for treatment of textile dyeing wastewater.","PeriodicalId":6958,"journal":{"name":"Acta Chemica Iasi","volume":"16 1","pages":"303 - 316"},"PeriodicalIF":0.5,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85291574","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: 4
DFT Investigation of Structural and Electronic Properties of Modified PZT 改性PZT结构及电子性能的DFT研究
IF 0.5
Acta Chemica Iasi Pub Date : 2019-06-01 DOI: 10.2478/achi-2019-0002
R. K. Hussein, I. Bashter, M. El-Okr, M. Ibrahim
{"title":"DFT Investigation of Structural and Electronic Properties of Modified PZT","authors":"R. K. Hussein, I. Bashter, M. El-Okr, M. Ibrahim","doi":"10.2478/achi-2019-0002","DOIUrl":"https://doi.org/10.2478/achi-2019-0002","url":null,"abstract":"Abstract Density of states and geometrical structures of modified Lead zirconate titanate are investigated using density functional theory within local density approximation. The electronic properties and bond length variation have been studied in terms of electronic structure and bonding mechanism principles respectively. Hybridization between Ti 3d - O 2p states and ferroelectric distortion have been addressed as a theoretical approach, to rule the improvement of ferroelectric properties of Lead zirconate titanate. The analysis of Ga, Tl modified Lead zirconate titanate were found to diminish the hybridization between Ti 3d - O 2p states, the relaxed behavior lead to the reversal of the known ferroelectric distortion. Y, Ho, Yb and Lu modified Lead zirconate titanate compounds have a tendency to intense the ferroelectric stability, its exhibit higher hybridization between Ti 3d - O 2p states than pure Lead zirconate titanate, also the arrangement of the ions distortions is strongly the same as the more favoured ferroelectric states of Lead zirconate titanate.","PeriodicalId":6958,"journal":{"name":"Acta Chemica Iasi","volume":"42 1","pages":"15 - 30"},"PeriodicalIF":0.5,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82826191","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: 2
Surface Modification of Poly(Ethylene Terephthalate) in Air Plasma 聚对苯二甲酸乙酯在空气等离子体中的表面改性
IF 0.5
Acta Chemica Iasi Pub Date : 2019-06-01 DOI: 10.2478/achi-2019-0010
M. Drobotă, A. Trandabăț, M. Pîslaru
{"title":"Surface Modification of Poly(Ethylene Terephthalate) in Air Plasma","authors":"M. Drobotă, A. Trandabăț, M. Pîslaru","doi":"10.2478/achi-2019-0010","DOIUrl":"https://doi.org/10.2478/achi-2019-0010","url":null,"abstract":"Abstract This paper reports the modification of a polyester film surface in air plasma at room temperature. In order to evaluate the efficiency of the plasma treatment, the modified surface of the PET films was characterized by contact angle and ATR-FTIR spectroscopy.","PeriodicalId":6958,"journal":{"name":"Acta Chemica Iasi","volume":"7 1","pages":"128 - 136"},"PeriodicalIF":0.5,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73250639","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: 2
Diethanolamine-Induced Hepatic Steatosis in Mice and Its Amelioration by Curcumin 二乙醇胺致小鼠肝脏脂肪变性及姜黄素的改善作用
IF 0.5
Acta Chemica Iasi Pub Date : 2019-06-01 DOI: 10.2478/achi-2019-0009
Hetal Doctor, Sanman Samova, R. Verma
{"title":"Diethanolamine-Induced Hepatic Steatosis in Mice and Its Amelioration by Curcumin","authors":"Hetal Doctor, Sanman Samova, R. Verma","doi":"10.2478/achi-2019-0009","DOIUrl":"https://doi.org/10.2478/achi-2019-0009","url":null,"abstract":"Abstract Extensive use of chemicals in personal care products has led to many health issues. Diethanolamine is one of such harmful chemicals containing two highly functional groups alcohol and amine that requires toxicological evaluation and its mitigation. Swiss strain albino mice were used and divided into different control and treated groups. Different doses of DEA (110, 165 and 330 mg/kg body weight/day) were orally administered for 30 days. Biochemical and histopathological assessments were performed at the end of the treatment. Results collectively revealed body weight loss as well as significant increase in absolute and relative liver weight in DEA-treated groups. Biochemical analysis revealed that DEA treatment further promotes significant (P<0.05), dose-dependent increase in lipid and cholesterol contents and also cause decrease in protein and glycogen content. Histopathological assessment confirms vacuole formation due to accumulation of lipid within the liver tissue. Administration of curcumin (10, 20 and 30 mg/kg body weight/day) along with high dose of DEA (330 mg/kg body weight/day) showed improved values of lipid, cholesterol, protein and glycogen contents. It also helped retaining normal histological structure of liver. Observations in all groups and results indicate DEA-treatment causes hepatic steatosis and treatment of curcumin attenuated effect of DEA that is due to its potential antioxidant properties.","PeriodicalId":6958,"journal":{"name":"Acta Chemica Iasi","volume":"28 1","pages":"110 - 127"},"PeriodicalIF":0.5,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84510135","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
Application of the Shrinking-Core Models for Determination of Dissolution Kinetics of Mn and Zn from Spent Zinc–Carbon Battery Powder in Organic Acid Solution 缩核模型在废锌碳电池粉末中锰、锌在有机酸溶液中溶解动力学测定中的应用
IF 0.5
Acta Chemica Iasi Pub Date : 2019-06-01 DOI: 10.2478/achi-2019-0008
T. Agacayak, H. A. Taner
{"title":"Application of the Shrinking-Core Models for Determination of Dissolution Kinetics of Mn and Zn from Spent Zinc–Carbon Battery Powder in Organic Acid Solution","authors":"T. Agacayak, H. A. Taner","doi":"10.2478/achi-2019-0008","DOIUrl":"https://doi.org/10.2478/achi-2019-0008","url":null,"abstract":"Abstract In this study, dissolution kinetics of manganese and zinc from spent zinc–carbon batteries in acetic acid solution was investigated. To determine the kinetics of dissolution of manganese and zinc, shrinking core model was applied to dissolution recoveries obtained at different temperatures. As a result of kinetic studies, it was determined that manganese and zinc were dissolved in acetic acid solution by diffusion from product layer and then activation energies (Ea) were calculated.","PeriodicalId":6958,"journal":{"name":"Acta Chemica Iasi","volume":"1 1","pages":"109 - 99"},"PeriodicalIF":0.5,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75763943","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: 3
Onsome New Neighbourhood Degree Based Indices 基于邻域度的一些新指标
IF 0.5
Acta Chemica Iasi Pub Date : 2019-06-01 DOI: 10.2478/achi-2019-0003
S. Mondal, Nilanjan De, A. Pal
{"title":"Onsome New Neighbourhood Degree Based Indices","authors":"S. Mondal, Nilanjan De, A. Pal","doi":"10.2478/achi-2019-0003","DOIUrl":"https://doi.org/10.2478/achi-2019-0003","url":null,"abstract":"Abstract In this paper, four novel topological indices named as neighbourhood version of forgotten topological index (FN), modified neighbourhood version of Forgotten topological index (FN*), neighbourhood version of second Zagreb index (M2*) and neighbourhood version of hyper Zagreb index (HMN) are introduced. Here the relatively study depends on the structure-property regression analysis is made to test and compute the chemical applicability of these indices for the prediction of physicochemical properties of octane isomers. Also it is shown that these newly presented indices have well degeneracy property in comparison with other degree based topological indices. Some mathematical properties of these indices are also discussed here.","PeriodicalId":6958,"journal":{"name":"Acta Chemica Iasi","volume":"116 1","pages":"31 - 46"},"PeriodicalIF":0.5,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87826474","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: 53
Zagreb Connection Indices of Two Dendrimer Nanostars 两种树状纳米星的Zagreb连接指数
IF 0.5
Acta Chemica Iasi Pub Date : 2019-06-01 DOI: 10.2478/achi-2019-0001
N. Fatima, A. A. Bhatti, Akbar Ali, Wei Gao
{"title":"Zagreb Connection Indices of Two Dendrimer Nanostars","authors":"N. Fatima, A. A. Bhatti, Akbar Ali, Wei Gao","doi":"10.2478/achi-2019-0001","DOIUrl":"https://doi.org/10.2478/achi-2019-0001","url":null,"abstract":"Abstract It is well known fact that several physicochemical properties of chemical compounds are closely related to their molecular structure. Mathematical chemistry provides a method to predict the aforementioned properties of compounds using topological indices. The Zagreb indices are among the most studied topological indices. Recently, three modified versions of the Zagreb indices were proposed independently in [Ali, A.; Trinajstić, N. A novel/old modification of the first Zagreb index, arXiv:1705.10430 [math.CO] 2017; Mol. Inform. 2018, 37, 1800008] and [Naji, A. M.; Soner, N. D.; Gutman, I. On leap Zagreb indices of graphs, Commun. Comb. Optim. 2017, 2, 99–117], which were named as the Zagreb connection indices and the leap Zagreb indices, respectively. In this paper, we check the chemical applicability of the newly considered Zagreb connection indices on the set of octane isomers and establish general expressions for calculating these indices of two well-known dendrimer nanostars.","PeriodicalId":6958,"journal":{"name":"Acta Chemica Iasi","volume":"16 1","pages":"1 - 14"},"PeriodicalIF":0.5,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88258613","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: 20
Some New Heterocyclisations Based on N-(2,2-dichloro-1-isothiocyanatoethyl)benzamide Derivatives 基于N-(2,2-二氯-1-异硫氰酸乙酯)苯酰胺衍生物的一些新的杂环化合物
IF 0.5
Acta Chemica Iasi Pub Date : 2019-06-01 DOI: 10.2478/achi-2019-0005
Ihor O. Pokotylo, P. Zadorozhnii, V. Kiselev, O. V. Okhtina, A. V. Kharchenko
{"title":"Some New Heterocyclisations Based on N-(2,2-dichloro-1-isothiocyanatoethyl)benzamide Derivatives","authors":"Ihor O. Pokotylo, P. Zadorozhnii, V. Kiselev, O. V. Okhtina, A. V. Kharchenko","doi":"10.2478/achi-2019-0005","DOIUrl":"https://doi.org/10.2478/achi-2019-0005","url":null,"abstract":"Abstract Based on the readily available N-(2,2-dichloro-1-(2-(4-methylbenzoyl)-hydrazine-1-carbothioamido)ethyl)benzamide, the corresponding N-(2,2-dichloro-1-((5-(p-tolyl)-1,3,4-oxadiazol-2-yl)amino)ethyl)benzamide and 5-(p-tolyl)-1,3,4-thiadiazol-2-amine were obtained. The products were received in acceptable yields and were isolated from the reaction mixture without any particular difficulty. The structure of the compounds obtained was confirmed by 1H, 13C NMR spectroscopy and mass spectrometry data.","PeriodicalId":6958,"journal":{"name":"Acta Chemica Iasi","volume":"23 1","pages":"65 - 72"},"PeriodicalIF":0.5,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82807077","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
Utility of N-Bromosuccinimide as a Green Chemical Reagent for Determination of H2-Receptor Antagonists in their Pharmaceutical Dosage Forms n -溴代琥珀酰亚胺作为绿色化学试剂在测定h2受体拮抗剂剂型中的应用
IF 0.5
Acta Chemica Iasi Pub Date : 2019-06-01 DOI: 10.2478/achi-2019-0004
Ahmed I. Hassan
{"title":"Utility of N-Bromosuccinimide as a Green Chemical Reagent for Determination of H2-Receptor Antagonists in their Pharmaceutical Dosage Forms","authors":"Ahmed I. Hassan","doi":"10.2478/achi-2019-0004","DOIUrl":"https://doi.org/10.2478/achi-2019-0004","url":null,"abstract":"Abstract An environmentally safe, simple and robust spectrophotometric method has been developed for determination of H2-receptor antagonists namely: cimetidine (CIM), famotidine (FAM), nizatidine (NIZ), and ranitidine hydrochloride (RAN). The method was depend on the reaction of the studied drugs with N-bromosuccinimide (NBS), environmentally friendly reagent, and the excess NBS was measured by its reaction with phloroglucinol to give a yellow chromogenic product (λmax at 435 nm). The absorption intensity decrease (ΔA) was correlated with drug concentrations in the sample solutions. By using of the optimum conditions, linear calibration curves with good correlation coefficients (0.9958–0.9998) were found between the measured ΔA values and the corresponding drugs concentrations in the range of 12-80 μg mL−1. Limits of detection were in the range 1.31-2.21 μg mL−1. The proposed method was validated and successfully applied for the analysis of the above mentioned drugs in their bulk and pharmaceutical dosage forms with good recoveries (98.5 ± 0.98 to 102.5 ± 0.79%). No interferences were obtained from the common excipients. The proposed method was successfully applied for the analysis of H2RAs in their dosage forms and the results were comparable with that obtained by the official methods.","PeriodicalId":6958,"journal":{"name":"Acta Chemica Iasi","volume":"49 1","pages":"47 - 64"},"PeriodicalIF":0.5,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87446142","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: 2
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