Proceedings of the 1st International Conference on Chemical Science and Technology Innovation最新文献_第5页

Chemical Compounds from Fungus Syncephalastrum racemosum Isolated as Endophytic from Ageratum conyzoides 从鹰嘴豆内生真菌中分离出的总状联头菌的化学成分

Proceedings of the 1st International Conference on Chemical Science and Technology Innovation Pub Date : 2019-01-01 DOI: 10.5220/0008858001360140

Elfita, Muharni, Mardiyanto, Fitrya, Rismawati Simangunsong

引用次数: 0

Pillarization of Bentonite using Fe3+/Ti4+ and Its Application for Congo Red and Direct Violet Removal Fe3+/Ti4+膨润土柱化及其在刚果红和直接脱紫中的应用

Proceedings of the 1st International Conference on Chemical Science and Technology Innovation Pub Date : 2019-01-01 DOI: 10.5220/0008854400790088

M. Said, R. Antini, T. Taher, A. Lesbani

{"title":"Pillarization of Bentonite using Fe3+/Ti4+ and Its Application for Congo Red and Direct Violet Removal","authors":"M. Said, R. Antini, T. Taher, A. Lesbani","doi":"10.5220/0008854400790088","DOIUrl":"https://doi.org/10.5220/0008854400790088","url":null,"abstract":": Bentonite was pillarized by using Fe 3+ /Ti 4+ metal oxide ratio 2:1 and 1:2. The pillarization product was characterized by using XRD analysis and FT-IR spectrophotometer. XRD diffractogram showed that the optimal product was obtained at Fe 3+ /Ti 4+ ratio 2:1. At this ratio, basal spacing of bentonite layer is 15 Å while bentonite with ratio 1:2 has basal spacing 12.86 Å. Bentonite 2:1 ratio was applied on Congo red adsorption. The isotherm adsorption was calculated and followed Freundlich model having adsorption rate (k) 0.0008 (min -1 ) for Congo red and 0.00045 (min -1 ) for direct violet. The adsorption capacity (qe) of Congo red at 70 °C is 68 mol/g that larger than 51 mol/g for direct violet. The adsorption energy (E) of Congo red at 70°C is 4.90 kJ/mol also higher then direct violet with 1.01 kJ/mol. The enthalpy (ΔH) and entropy (ΔS) is decreased with increase of Congo red and direct violet concentration. The optimum pH was obtained at 3 whereas the maximum amount of Congo red adsorbed is 90.60 mg/L. Direct violet shows maximum amount of adsorption at pH 4 with 79.61 mg/L.","PeriodicalId":20533,"journal":{"name":"Proceedings of the 1st International Conference on Chemical Science and Technology Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84986494","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

Optimization of Polymer Networks using Variations in Moleculer Weight of Polyetilen Glycol in the Manufacture of Semi – IPN Hidrogels from Coconut Water Cellulose Bacteria 利用聚乙二醇分子量的变化优化聚合物网络以椰子水纤维素菌为原料制备半IPN汗液凝胶

Proceedings of the 1st International Conference on Chemical Science and Technology Innovation Pub Date : 2019-01-01 DOI: 10.5220/0009003203290334

Tamrin, E. Zaidar

{"title":"Optimization of Polymer Networks using Variations in Moleculer Weight of Polyetilen Glycol in the Manufacture of Semi – IPN Hidrogels from Coconut Water Cellulose Bacteria","authors":"Tamrin, E. Zaidar","doi":"10.5220/0009003203290334","DOIUrl":"https://doi.org/10.5220/0009003203290334","url":null,"abstract":": Research heve been done to find out the effect of variation moleculer weight polietylen glikoln 1000; 3000 and 6000 on manufacture semi interpenetrating polymer networks hidrogel from bacterial selulose with sytem fermentation using accetobacterial-xylinum in based coconut water. IPN hidrogel by polietilenglikol 6000 has more croslinks compared using peg 3000 and peg 1000. Analysis thermal hidrogel IPN using peg 6000 is 457,14 0 C, compared PEG 3000 is 252, 80 0 C and PEG 1000 is 249,30 0 C. semi-IPN hydrogel formed was characterized by, crosslink percentage, chemistry structural analysis using Fourier Transform Infrared (FT-IR) spectroscopy, water absorption test and thermal resistance using Differential Thermal Analysis (DTA). From the analysis, they showed Semi Interpenetrating Polymer Network Hydrogel with using PEG 6000 the highest crosslink percentage (64,3%) for PEG 3000 is 42.5 % and PEG 1000 is 15. 7 %. Characterization results of FTIR indicate the occurrence of crosslinking between Polyacrylic acid and MBA. This shown in existence of 1403 cm -1 and 1560 cm -1 (COO - ) and 3413 cm -1 (NH amine). Thermal analysis using Differential Thermal Analysis (DTA) shows thermal optimum thermal stability at the addition of Polietilengiikol 6000 to semi-IPN hydrogel which was completely degraded at 680 o C, reaction that occurs during the decomposition process is endothermic and exothermic reaction.","PeriodicalId":20533,"journal":{"name":"Proceedings of the 1st International Conference on Chemical Science and Technology Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75796390","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

Modification of Pulp Cellulose of Belangke Bamboo (Gigantochloa pruriens) using [2-(Acryloyloxy)Ethyl] Trimethyl Ammonium Chloride and Maleic Anhydride [2-(丙烯氧基)乙基]三甲基氯化铵和马来酸酐改性贝郎克竹纸浆纤维素

Proceedings of the 1st International Conference on Chemical Science and Technology Innovation Pub Date : 2019-01-01 DOI: 10.5220/0008932303050311

Rina Ridara, D. A. Nasution, B. Wirjosentono

{"title":"Modification of Pulp Cellulose of Belangke Bamboo (Gigantochloa pruriens) using [2-(Acryloyloxy)Ethyl] Trimethyl Ammonium Chloride and Maleic Anhydride","authors":"Rina Ridara, D. A. Nasution, B. Wirjosentono","doi":"10.5220/0008932303050311","DOIUrl":"https://doi.org/10.5220/0008932303050311","url":null,"abstract":": In this work, pulp cellulose (Cell) was prepared from Belangke bamboo ( gigantochloa pruriens ) by Craft delignification process. The AETAC/MA-modified Cellulose (AETAC/MA-g-Cell) was characterised using infrared spectroscopy (FTIR) for chemical structure, differential scanning calorimetry (DSC) for thermal properties and scanning electron microscopy (SEM) for morphological images. Results of FTIR spectra of the AETAC/MA-g-Cell after exhaustive Sokhlet extraction in n-hexane still showed stable absorption peak of AETAC/MA carbonyl group (>C=O) at 1705 cm -1 and disappearance of double bond absorption peak af acryloyl group (>C=C<) at 1630 cm -1 . These evidences indicated that the AETAC/MA modifiers have successfully bound into the cellulose, in which hydroxyl groups of the cellulose have esterified with maleic anhydride and bound with acryloyl groups of AETAC. Further data of DSC analysis of the modified cellulose showed slightly lower decomposition temperature of 300 o C when compared to that of fresh cellulose of 270-400 o C. Whereas SEM images of the modified cellulose also indicated rougher surface when compared to that of fresh cellulose fibres. The AETAC/MA-modified cellulose then may be utilised as antimicrobial materials for various cellulose products.","PeriodicalId":20533,"journal":{"name":"Proceedings of the 1st International Conference on Chemical Science and Technology Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78199232","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: 1

Synthesis of Carboxymethyl Polysaccharide from Arenga Pinnata Polysaccharide and Monochloroasetic 桄榔子多糖与单氯乙酸合成羧甲基多糖

Proceedings of the 1st International Conference on Chemical Science and Technology Innovation Pub Date : 2019-01-01 DOI: 10.5220/0008854100630068

J. Tarigan, D. Barus, Nico Hot Asi Naibaho

{"title":"Synthesis of Carboxymethyl Polysaccharide from Arenga Pinnata Polysaccharide and Monochloroasetic","authors":"J. Tarigan, D. Barus, Nico Hot Asi Naibaho","doi":"10.5220/0008854100630068","DOIUrl":"https://doi.org/10.5220/0008854100630068","url":null,"abstract":"Synthesis of carboxymethyl polysaccharide Arenga pinnata has been prepared through etherification of Arenga pinnata polysaccharide and monochloroacetate (MCA). Firstly the polysaccharide was extracted from Arenga pinnata endosperm with different toughness (soft and hard) followed by etherification with monochloroacetate using sodium hydroxide as a catalyst with variation of molar ratio MCA : NaOH of 0.50; 0.55; and 0.60 and ethanol 96% as solvent at temperature of 60 C for 10 hours in oven. The substitution degree was determined using titration method in which the Na-carboxymethyl was hydrolysis with HCl 2M in methanol 70% to form carboxymethyl polysaccharide. The yields of carboxymethyl polysaccharide were 90% and 83% for hard and soft, respectively. The substitution degree of carboxymethyl polysaccharide from soft Arenga pinnata endosperm was 1.600; 1.068 and 0.403 and from hard endosperm was 0.688; 0.467 and 0.202. The substitution degree of carboxymethyl polysaccharide was increased in the increasing of NaOH used which polysaccharide from Arenga pinnata endosperm soft has higher substitution degree than from the hard. The appearance stretching vibration of the carbonyl group (C=O) at a wavelength of 1730 cm-1 confirmed the formation of carboxymethyl polysaccharide. The morphology surface of carboxymethyl polysaccharide showed rough surface than Arenga pinnata polysaccharide revealed that the granule of polysaccharide have been changed.","PeriodicalId":20533,"journal":{"name":"Proceedings of the 1st International Conference on Chemical Science and Technology Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89154262","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

Formation Process of Graphene Nano Sheets 石墨烯纳米片的形成过程

Proceedings of the 1st International Conference on Chemical Science and Technology Innovation Pub Date : 2019-01-01 DOI: 10.5220/0008839400360038

H. Sihotang, R. Siburian, C. Simanjuntak, S. L. Raja, M. Supeno, Vivi Sukmawati, Z. Alfian

引用次数: 2

Magnesium Impregnated Silica Mesoporous Prepared using Ester Ricinoleic as Template for the Esterification 以蓖麻油酸酯为模板剂制备镁浸渍二氧化硅介孔酯化反应

Proceedings of the 1st International Conference on Chemical Science and Technology Innovation Pub Date : 2019-01-01 DOI: 10.5220/0008921702740279

Andriayani, Marpongahtun, Y. Muis

引用次数: 0

Making Composites from Mixing Limestone with Addition of Latex 石灰石掺加乳胶制备复合材料

Proceedings of the 1st International Conference on Chemical Science and Technology Innovation Pub Date : 2019-01-01 DOI: 10.5220/0008864001650173

A. Siregar, S. Gea, Nora Indriani

{"title":"Making Composites from Mixing Limestone with Addition of Latex","authors":"A. Siregar, S. Gea, Nora Indriani","doi":"10.5220/0008864001650173","DOIUrl":"https://doi.org/10.5220/0008864001650173","url":null,"abstract":": Research on mixing of limestone with the addition of latex in making composites have been done. This study uses limestone originating from Sidikalang where crushed limestone using ball mill then calcined at 900 o C for 2 hours then tested using XRD Pan Analytical X’pert Powder PW 30/40 to determine the presence of CaO compounds with the greatest intensity of 3036 at θ =37.3556 and particle size tested using PSA Shimadzu SALD-2300 is obtained an average of 731.7 nm. Then limestone powder (LSP) is used as a filler with various variations on latex composites. Analyzing of the morphology using SEM FEI Inspect-S50 can be seen from the photo that limestone powder can be evenly distributed on compsites 800 g of latex + 200 g of limestone powder while in the next variation the limestone powder is not evenly distributed because the addition of the filler increases but the addition of the matrix decreases. The mechanical properties of latex composites with limestone powder were tested using ASTM D-412 where optimum tensile strength was found in 800 g of latex + 200 g of limestone powder is 1.279 MPa and optimum elongation of 1000 g latex is 4.328 mm/mm. Thermal properties were tested using TGA ASTM E1131 obtained by decomposition thermal at 300-400 o C because in the sample 1000 g of latex has thermal stability at 377.39 o C and in the sample 800 g of latex + 200 g of limestone powder has thermal stability at 378.21 o C.","PeriodicalId":20533,"journal":{"name":"Proceedings of the 1st International Conference on Chemical Science and Technology Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86365558","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

Cocoa Pod (Teobroma cacao L.) Utilization as Material for CMC 可可荚(Teobroma Cocoa L.)用作CMC的材料

Proceedings of the 1st International Conference on Chemical Science and Technology Innovation Pub Date : 2019-01-01 DOI: 10.5220/0008857201210123

Yeni Afriani, Zanira Urfa Harahap, Era Fazira Matondang, C. F. Zuhra

引用次数: 0

Effect of Comparative Flour of Purple Sweet Potato (Ipomea batatas) and Wheat Flour of Nutrition Value on Brownies 紫薯粉与小麦粉营养价值比较对布朗尼蛋糕的影响

Proceedings of the 1st International Conference on Chemical Science and Technology Innovation Pub Date : 2019-01-01 DOI: 10.5220/0008865701820186

E. Zaidar, Rumondang Bulan, F. Sebayang, M. Z. E. Sinaga, Rina Latipah

{"title":"Effect of Comparative Flour of Purple Sweet Potato (Ipomea batatas) and Wheat Flour of Nutrition Value on Brownies","authors":"E. Zaidar, Rumondang Bulan, F. Sebayang, M. Z. E. Sinaga, Rina Latipah","doi":"10.5220/0008865701820186","DOIUrl":"https://doi.org/10.5220/0008865701820186","url":null,"abstract":"Determination of protein, fat and carbohydrates of brownies with variations of purple sweet potato flour comparison with wheat flour. Brownies flour made with variation ratio of purple sweet potato flour with wheat flour that was (80:20), (60; 40), (40:60) and (20:80) with a total weight of 100 grams of flour. The protein content was determined by the Kjeldahl method, fFat content was determined by continuous extraction, carbohydrate content was determined by counting aliquots weight reduction as the results of moisture, ash, protein and fat. The result showed the highest protein content in variation (40:60) which is 7.09% and the lowest (80:20), which is 3.23%. The more purple sweet potato flour added the protein in brownies was increase. The highest fat content in variation (20:80) is 18.60% and the lowest (80:20) and (60: 40), which is 0.63%. The more the flour was added the fat content of the brownies was increase. The highest levels of carbohydrates obtained from the reduction of protein, fat, water and ash. Furthermore, the antioxidant test on purple sweet potato flour which has antioxidants that are very good for consumption which have IC50: 173.14 mg / L.","PeriodicalId":20533,"journal":{"name":"Proceedings of the 1st International Conference on Chemical Science and Technology Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84591169","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