chemistry and materials research最新文献_第4页

The Effects of Deposition Time on Phase and Structure of FeCoNi Films 沉积时间对FeCoNi薄膜物相及结构的影响

chemistry and materials research Pub Date : 2022-06-30 DOI: 10.56425/cma.v1i2.23

Muhamad Mulyadi, Afrizal

引用次数: 3

The Effect of Tertiary Butylhydroquinone Antioxidant on The Stability of Rubber Seed Biodiesel 叔丁基对苯二酚抗氧化剂对橡胶种子生物柴油稳定性的影响

chemistry and materials research Pub Date : 2022-06-30 DOI: 10.56425/cma.v1i2.26

Salma Fitri Annisa, Zulmanelis Darwis, T. Hadinugrahaningsih

引用次数: 2

Synthesis and Characterization of Zero Valent Iron Prepared Using Green Synthesis Method 绿色合成法制备零价铁的合成及表征

chemistry and materials research Pub Date : 2022-06-30 DOI: 10.56425/cma.v1i2.24

Devi Indrawati Syafei, Sahid Hidayat, Yusmaniar

{"title":"Synthesis and Characterization of Zero Valent Iron Prepared Using Green Synthesis Method","authors":"Devi Indrawati Syafei, Sahid Hidayat, Yusmaniar","doi":"10.56425/cma.v1i2.24","DOIUrl":"https://doi.org/10.56425/cma.v1i2.24","url":null,"abstract":"This research was conducted to develop a green synthesis method for zero valent iron (ZVI) preparation. The ZVI was synthesized by reacting FeCl2 with polyphenols extracted from kepok banana peels. This polyphenol extraction process was carried out using three different solvents, namely: water, chloroform, and ethyl acetate. Gas chromatography mass spectroscopy test showed three main phenolic compounds contained in the banana peel extract, namely: 2-methoxy-4-vinylphenol, 4-methoxy-2-vinylphenol, and 2-methoxy-5-vinylphenol. The optimum composition of FeCl2 and polyphenol was 3:2. Fourier transform infra red spectroscopy data confirmed that the synthesized ZVI contains organic compounds having –OH and C=O groups which are assumed to be capping agents that can maintain stability. This has also been supported by the results of the energy dispersive X-ray analysis where there are carbon atoms (C) and oxygen atoms (O) in ZVI. The ZVI particle size was uneven and form a compact solid. The largest particle size distribution of ZVI is in the range of 234.49 nm - 407.49 nm with the average size of ZVI beings 616.26 nm. The results of the XRD analysis have also confirmed the formation of a simple cubic ZVI with fine crystallite size of ca 26.64 nm.","PeriodicalId":9724,"journal":{"name":"chemistry and materials research","volume":"255 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78213775","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

Evaluating the Effect of Plants Extracts Against Varroa Mites (Varroa Destructors) of Honeybees (Apis Mellifera) 植物提取物对蜜蜂瓦螨(瓦螨破坏者)的防治效果评价

chemistry and materials research Pub Date : 2022-05-01 DOI: 10.7176/cmr/14-2-03

引用次数: 2

Synthesis, In vitro Biological Studies of novel Homoleptic Ni(II) and Zn(II) Complexes of Thiosemicarbazide Derivative ligand 新型同感性硫代氨基脲衍生物Ni(II)和Zn(II)配合物的合成及体外生物学研究

chemistry and materials research Pub Date : 2022-05-01 DOI: 10.7176/cmr/14-2-02

引用次数: 0

Potassium Status of Soils under Three Different Parent Materials of the Oil palm (Elaeis guineensis Jacq) 三种不同母质油棕土壤钾态的研究

chemistry and materials research Pub Date : 2022-05-01 DOI: 10.7176/cmr/14-2-01

引用次数: 0

Integrating Nanoscience/Nanotechnology Advances in ICT and Chemistry into the Secondary School Curriculum in Rivers State 将信息通信技术和化学中的纳米科学/纳米技术进展纳入河流州中学课程

chemistry and materials research Pub Date : 2022-05-01 DOI: 10.7176/cmr/14-2-04

引用次数: 0

Technical Feasibility of the Use of Sandy Loam Soils in Concrete 砂壤土在混凝土中应用的技术可行性

chemistry and materials research Pub Date : 2022-01-01 DOI: 10.7176/cmr/14-1-02

A. Conrado, E. Miguel, L. Cristóvão

{"title":"Technical Feasibility of the Use of Sandy Loam Soils in Concrete","authors":"A. Conrado, E. Miguel, L. Cristóvão","doi":"10.7176/cmr/14-1-02","DOIUrl":"https://doi.org/10.7176/cmr/14-1-02","url":null,"abstract":"In Mozambique, the task of providing infrastructural facilities for the rapidly growing population is enormous. Although the country has unique characteristics that present opportunities for timber construction to thrive, concrete continues to be one of the most used materials in modern construction. However, the concrete industry has a considerable impact on the environment due to production and the raw material consumed. Among the constituents of concrete, sand has been the one in which its exploitation causes the most damage to the environment. An alternative to solve this problem would be the use of fine sandy loam aggregate in the production of concrete. Thus, this research presents the study of the technical feasibility of using fine sandy loam aggregate in the production of concrete. The main study variables were the consistency and mechanical strength of concrete compression. For the production of concrete, two types of gravel of ¾ were used, sandy loam soil, sandy soil and Portland cement. Specimens were manufactured for 4 different mixes, with a reference mix containing cement, sand, gravel and water. To evaluate the performance of the mixes, tests of mechanical resistance to compression were carried out at 7, 14, 21 and 28 days of age. After determining the main physical and mechanical characteristics, promising results were obtained for the mixtures with 25% and 50% substitution, where the axial compressive strength test reached 26.3 MPa and 27 MPa, above the reference mixture of 25.6 MPa. The 100% mix of alternative soil reached an average strength of 25.2 MPa. This same mixture, although having low mechanical strength, has greater consistency, with a slump of ±10 cm.","PeriodicalId":9724,"journal":{"name":"chemistry and materials research","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88269582","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 of Complex from Nickel(II) salt and 2-imino-3-(2-hydroxy phenyl)-1-thiazolidin-4-one and Study of its Structure and Antimicrobial activity 镍(II)盐与2-亚胺-3-(2-羟基苯基)-1-噻唑烷-4-酮配合物的合成及其结构与抗菌活性研究

chemistry and materials research Pub Date : 2022-01-01 DOI: 10.7176/cmr/14-1-01

引用次数: 0

USING OF LACCASE IN PAPERMAKING PROCESS FROM OLD CORRUGATED CONTAINER (OCC) PULP 漆酶在旧瓦楞纸浆造纸中的应用

chemistry and materials research Pub Date : 2021-11-01 DOI: 10.7176/cmr/13-3-04

N. Elyani

{"title":"USING OF LACCASE IN PAPERMAKING PROCESS FROM OLD CORRUGATED CONTAINER (OCC) PULP","authors":"N. Elyani","doi":"10.7176/cmr/13-3-04","DOIUrl":"https://doi.org/10.7176/cmr/13-3-04","url":null,"abstract":"Nina Elyani (Corresponding author), Sonny Kurnia Wirawan, Nena Andrina Restu Center for Pulp and Paper Jl. Raya Dayeuh Kolot 132 Bandung, West Java, Indonesia Tel: +62-22-5202980 E-mail: ninaelyani@yahoo.com, sonny-k@kemenperin.go.id Abstract Old Corrugated Container (OCC) is one of the most potential raw material for paper and paperboard manufacture but it has some disadvantage of a continued decrease in the quality of the fiber during the recycling process. It’s caused by decreasing of carboxyl groups when the fibers undergo drying, resulting in decreased ability for swelling, thereby reducing the ability of the bond between the fiber and the fiber strength. Modification of waste paper using laccase enzyme may increase the fiber content of the carboxyl group of waste paper, therefore will increase paper strength. Experiments carried out with the addition of laccase in various dosage paper stock originating from OCC by 5% pulp consistency. 80 g/m Laboratory sheets, was made from stock, then analyzed by tensile index, burst index, wet tensile index, the content of carboxyl groups and SEM analysis. The experimental results showed addition of 50 U/g laccase at OCC giving optimum value for physical properties.","PeriodicalId":9724,"journal":{"name":"chemistry and materials research","volume":"C-20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85067444","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