scholarly journals PREPARATION OF KANTALAUHA BHASMA BY TWO DIFFERENT METHODS AND ITS SINDOORA NIRMANA: A COMPARATIVE PHARMACEUTICO-ANALYTICAL STUDY

2020 ◽  
Vol 11 (5) ◽  
pp. 46-54
Author(s):  
Sanoop K ◽  
B Vinayachandra Shetty
Keyword(s):  
Particle Size ◽  
Analytical Study ◽  
Sem Analysis ◽  
Absorption Peak ◽  
Ft Ir ◽  
Ir Analysis ◽  
Modern Analytical

According to Rasa Ratna Samucchaya, Kantalauha is considered as the best variety among Lauhas for Lauha Bhasma compared with Tikshna and Munda Lauha. The present study deals with the “Preparation of Kantalauha bhasma by two different methods and its Sindoora Nirmana- A Comparative Pharmaceutico-Analytical Study. Two different Kantalauha Bhasma and their Kanta Sindoora were prepared as per classical reference and the samples were subjected to Classical and Modern Analytical Parameters, XRD, EDX, SEM, FT-IR, and NPST. Pharmaceutically Kantalauha Bhasma 1 has attained Bhasma Siddhi Lakshanas in 16 Putas and Kantalauha Bhasma 2 in 3 Putas. Both the samples of Kanta Sindoora attained Sindoora Varna by 3 Putas. SEM analysis showed that Kantalauha Bhasma 1 and Kanta Sindoora 1 attained the smallest particle size. XRD showed the presence of compound Fe2O3 in all the samples. EDAX confirmed the presence of Fe, O2, Mg, Al, Si, S, K and Ca. The FT-IR analysis of all the samples shows the presence of 10 Absorption Peak frequencies cm-1. NPST proved the fineness and proper formation of Bhasma samples. Among the two different methods of Kantalauha Bhasma preparation, the 1st method is found better in yield wise and cost-wise. The second method saved the time as it attained Bhasma Siddhi Lakshanas within 3 puts. In the case of Kanta Sindoora, yield wise both the samples were found almost the same.

scholarly journals Transcrystallization of Isotactic Polypropylene/Bacterial Cellulose Hamburger Composite

Polymers ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 508 ◽  
Author(s):  
Bo Wang ◽  
Fu-hua Lin ◽  
Xiang-yang Li ◽  
Xu-ran Ji ◽  
Si-xiao Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Bacterial Cellulose ◽  
Isotactic Polypropylene ◽  
Crystallization Rate ◽  
Sem Analysis ◽  
Hydroxyl Groups ◽  
Hot Press ◽  
Ft Ir ◽  
Ir Analysis ◽  
The Fourier Transform

Isotactic polypropylene (iPP) is a commonly used thermoplastic polymer with many excellent properties. But high brittleness, especially at low temperatures, limits the use of iPP. The presence of transcrystallization of iPP makes it possible for fiber-reinforced iPP composites with higher strength. Bacterial cellulose (BC) is a kind of cellulose with great potential to be used as a new filler to reinforce iPP due to its high crystallinity, biodegradability and efficient mechanical properties. In this study, the iPP/BC hamburger composite was prepared by a simple hot press and maleic anhydride grafted polypropylene (MAPP) was used to improve the interface compatibility of iPP and BC. The polarizing microscope (POM) photograph shows that BC successfully induces the transcrystallization of iPP. The differential Scanning Calorimeter (DSC) date proves that the addition of BC could improve the thermal properties and crystallization rate of the composite. Especially, this change is more obvious of the iPP/MAPP/BC. The mechanical properties of the iPP/BC composites were greatly increased. This DSC date is higher than BC; we used BC particles to enhance the iPP in our previous research. The scanning Electron Microscope (SEM) analysis intuitively shows that the interface of the iPP/MAPP/BC is more smooth and flat than the iPP/BC. The fourier Transform infrared spectroscopy (FT-IR) analysis of the iPP/BC hamburger composites was shown that a new C=O group vibration appeared at 1743 cm−1, which indicated that the hydrogen bond structure of BC molecules was weakened and some hydroxyl groups were substituted after modification which can increase the lipophilicity of BC. These results indicated that the BC fiber can easily induce the transcrystallization of iPP, which has excellent mechanical properties. Moreover, the addition of MAPP contributes greatly to the interface compatibility of iPP and BC.

Analysis on Products and Residues of Liquefaction of Wheat Straw & Polyester in Supercritical Ethanol

2011 ◽  
Vol 236-238 ◽  
pp. 142-145
Author(s):  
Zhu Long ◽  
Yu Feng Long ◽  
Jun Jun He ◽  
Hai Bo Deng
Keyword(s):  
Wheat Straw ◽  
Degradation Products ◽  
Sem Analysis ◽  
Supercritical Conditions ◽  
Powder Surface ◽  
Phenol Derivatives ◽  
Ft Ir ◽  
Ir Analysis ◽  
Supercritical Ethanol ◽  
Liquefaction Process

The mixture of wheat straw (WS) and polyester (PC) was liquefied in supercritical ethanol. Liquefied products produced and liquefied residue from the liquefaction under different supercritical conditions were analyzed by GC-MS, SEM and IR. GC-MS analysis of the liquefied products indicates that ethanol would decompose. And the most compounds in the liquefied product had the structure of phenol and phenol derivatives, which came from the degradation products of PC and WS. SEM analysis show that the wheat straw powder possessed larger particles with smooth surfaces while the residue from liquefaction had smaller particles with rough surfaces because of drastically degraded from the wheat straw powder surface under supercritical conditions. FT-IR analysis showed that the lignin was easily degraded during the liquefaction process, and also found to the cellulose is very difficult to liquefy for its crystalline structure.

Synthesis of Zinc Phthalocyanine and its Dimerization in DMF

2014 ◽  
Vol 926-930 ◽  
pp. 270-273
Author(s):  
Zhen Hua Cheng ◽  
Na Cui ◽  
Hong Xiao Zhang ◽  
Li Jun Zhu ◽  
Dao Hong Xia
Keyword(s):  
Sem Analysis ◽  
Red Shift ◽  
Zinc Phthalocyanine ◽  
Dimethyl Formamide ◽  
Improved Method ◽  
Vis Spectroscopy ◽  
Ft Ir ◽  
Ir Analysis ◽  
High Yields ◽  
Maximum Absorption Wavelength

Zinc phthalocyanine was prepared with improved method with high yields and characterized by XRD and FT-IR analysis. The SEM analysis was also conducted to demonstrate the apparent morphology of the synthesized compound. Dimerization of the zinc phthalocyanine was measured by UV-Vis spectroscopy in N, N-dimethyl formamide (DMF). The red–shift of maximum absorption wavelength and deviation from Lambert-Beer law was observed with increasing the concentration.

scholarly journals KARAKTERISTIK BIOSORBEN PELEPAH NIPAH (Nypa Fruticans) UNTUK PENURUNAN KADAR LOGAM BERAT AIR MERKURI (Hg)

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Aulia Noor Ikhsan ◽  
Yaya Azmiati ◽  
Ulfah Delvianti ◽  
Isna Syauqiah
Keyword(s):  
Particle Size ◽  
Surface Area ◽  
Contact Time ◽  
Sem Analysis ◽  
Ftir Analysis ◽  
Nypa Fruticans ◽  
Ft Ir

Penelitian ini bertujuan untuk mengetahui karakteristik biosorben pelepah nipah dan menentukan kondisi optimum ukuran partikel dan waktu kontak dalam penurunan kadar merkuri. Proses maserasi menggunakan metanol dan diaktivasi menggunakan HCl. Hasil analisa FT-IR menunjukkan bahwa pada biosorben pelepah nipah memiliki kandungan selulosa yang ditunjukkan dengan gugus fungsi O-H, C-H dan C-O. Pada analisa SEM menunjukkan bahwa luas permukaan biosorben ukuran 100 mesh lebih besar dibandingan dengan luas permukaan 60 dan 80 mesh. Hasil pengujian AAS pada sampel pada ukuran 60 mesh dengan wantu kontak 30,60 dan 90 menit yaitu 99,99902 %, 99,99922 % dan 99,99942 %, pada ukuran 80 mesh dengan waktu kontak 30,60 dan 90 menit yaitu 99,99951 %, 99,99958 % dan 99,99966 %, pada ukuran 100 mesh dengan waktu kontak 30,60 dan 90 menit yaitu 99,99973 %, 99,99981 % dan 99,99989 %. Penyerapan kadar merkuri terbanyak terjadi pada biosorben ukuran 100 mesh dengan waktu kontak 90 menit yaitu 99,99989 %.  Kata Kunci : Adsorpsi, biosorben, karakteristik, merkuri, pelepah nipah. This research attempts to know characteristic of nypa midrib biosorbent and determine optomization particle size and contact time in reduce level mercury. Maceration process using methanol and activation biosorbent is using HCl. The results of FTIR analysis shows that nypa midrib biosorbent contains cellulose indicated by the fungsional group O-H, C-H and C-O. SEM analysis is shows that the surface area biosorbent 100 mesh is bigger than surface area 60 and 80 mesh. The result of AAS for sample 60 mesh with contact time 30, 60 and 90 minute is 99,99902 %, 99,99922 % dan 99,99942 %, at 80 mesh with contact time 30,60 and 90 minute is 99,99951 %, 99,99958 % dan 99,99966 %, and at 100 mesh with contact time 30, 60 and 90 minute is 99,99973 %, 99,99981 % dan 99,99989 %. The highest absorption of mercury levels occurred in biosorbent 100 mesh with contact time 90 minute is 99,99989 %. Keywords: Adsorption, biosorbent, characteristic, mercury, nypa midrib.

Chemically Modification to Corn Stalk as a Natural Material for Oil Absorption

2011 ◽  
Vol 675-677 ◽  
pp. 325-328
Author(s):  
Yuan Gao ◽  
Shuai Li ◽  
Ping Qu ◽  
Lu Bai ◽  
Li Ping Zhang
Keyword(s):  
Sem Analysis ◽  
Natural Material ◽  
Corn Stalk ◽  
Oil Absorption ◽  
Free System ◽  
Propionic Anhydride ◽  
Solvent Free System ◽  
Ft Ir ◽  
Ir Analysis ◽  
Materials Used

A series of natural materials used for oil absorption based on corn stalks have been prepared by acylation grafting with propionic anhydride in a solvent-free system at 100 and 140 °C for 2-6 h. It is found that the oil (benzene) sorption capacity of the grafted corn stalks is about 8.5- 12.6g/g (in 15 minutes), and the grafted material is significantly more hydrophobic than the raw corn stalks. The grafted corn stalk float on the surface of water, as the oil, can be easily to be removed when the application is completed. Fourier infrared (FT-IR) analysis is used to confirm the chemical reaction which takes place between corn stalks and propionic anhydride. Scanning electron microscope (SEM) analysis is used to determine the structure of the grafted corn stalk material.

FT-IR Analysis of Molecular Structure Evolvement of Poly(Ether urethanes) in Ozone Atmosphere

2013 ◽  
Vol 742 ◽  
pp. 215-219 ◽  
Author(s):  
Hai Yan Wang ◽  
Yu Wen Liu ◽  
Ji Feng Tian ◽  
Bin Sun ◽  
Shi Jie Huang
Keyword(s):  
Molecular Structure ◽  
Carbonyl Group ◽  
Uv Light ◽  
Color Difference ◽  
Sem Analysis ◽  
Hydroxyl Group ◽  
Failure Behavior ◽  
Ozone Oxidation ◽  
Ft Ir ◽  
Ir Analysis

The failure behavior of Poly (ether urethanes) in ozone atmosphere was investigated by FTIR, UV-Vis spectra and SEM analysis. It is found that some oxygen-containing groups such as the hydroxyl group and the carbonyl group increase first and then slightly decrease with the ozone oxidation time and the carbohydryl and ether bonds decrease slowly. After oxidation by ozone, the polyurethane molecule chains break on C-O in ether and urethane groups instead of chain crosslinking. In addition, ozone oxidization increases the color difference and lowers the UV light transparence of polyurethane.

scholarly journals Green Synthesis of Zinc based Nanoparticles for Thermal Industry based Applications

2019 ◽  
Vol 9 (2S4) ◽  
pp. 255-256
Keyword(s):  
Single Phase ◽  
Secondary Phase ◽  
Sem Analysis ◽  
Xrd Pattern ◽  
Hibiscus Rosa Sinensis ◽  
Nanoparticle Morphology ◽  
Phase Spinel ◽  
Ft Ir ◽  
Ir Analysis ◽  
Characterization Property

Spinel ZnAl2O4 nanoparticles were prepared effectively by simplistic, economical microwave heating method using Hibiscus rosa-sinensis extract as reducing agent. The samples were successfully characterized by XRD pattern, EDX spectra, FT-IR analysis, HR-SEM analysis, and VSM instrumentation techniques. XRD, EDX and FT-IR results demonstrated that the products contain a pure single-phase spinel structure lacking of other secondary phase impurities. SEM results confirmed the spherical shaped nanoparticle morphology of the sample. Magnetic characterization property was confirmed by VSM analysis. VSM hysteresis loop established the superparamegnetism of the sample and the magnetization (Ms) value of ZnAl2O4 is 0.023 emu/g.

Polarized microbeam FT-IR analysis of single fibers

1996 ◽  
Vol 54 ◽  
pp. 206-207
Author(s):  
Liling Cho ◽  
David L. Wetzel
Keyword(s):  
Molecular Orientation ◽  
Transition Point ◽  
Polymer Fibers ◽  
Single Fiber ◽  
Wire Grid ◽  
Polyester Fibers ◽  
Ft Ir ◽  
Ir Analysis ◽  
The Relationship ◽  
Wire Grid Polarizer

Polarized infrared microscopy has been used for forensic purposes to differentiate among polymer fibers. Dichroism can be used to compare and discriminate between different polyester fibers, including those composed of polyethylene terephthalate that are frequently encountered during criminal casework. In the fiber manufacturering process, fibers are drawn to develop molecular orientation and crystallinity. Macromolecular chains are oriented with respect to the long axis of the fiber. It is desirable to determine the relationship between the molecular orientation and stretching properties. This is particularly useful on a single fiber basis. Polarized spectroscopic differences observed from a single fiber are proposed to reveal the extent of molecular orientation within that single fiber. In the work presented, we compared the dichroic ratio between unstretched and stretched polyester fibers, and the transition point between the two forms of the same fiber. These techniques were applied to different polyester fibers. A fiber stretching device was fabricated for use on the instrument (IRμs, Spectra-Tech) stage. Tension was applied with a micrometer screw until a “neck” was produced in the stretched fiber. Spectra were obtained from an area of 24×48 μm. A wire-grid polarizer was used between the source and the sample.

Pemanfaatan Cangkang Pensi (Corbicula Moltkiana) sebagai Bahan Penyerap Zat Warna Rhodamin B Dalam Larutan

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Rahmiana Zein ◽  
Mutia Khuratul Aini ◽  
Hermansyah Aziz
Keyword(s):  
Rhodamine B ◽  
Sem Analysis ◽  
Spectra Analysis ◽  
Biosorption Capacity ◽  
Biosorption Process ◽  
Langmuir Isotherm Model ◽  
Ft Ir ◽  
Cationic Exchange ◽  
Rhodamin B ◽  
Model Isotherm

Biosorpsi zat warna Rhodamine B menggunakan cangkang Pensi (Corbicula moltkiana) telah dikaji. Percobaan dilakukan dengan system batch guna memperoleh kondisi optimum biosorspi zat warna. Kapasitas biosorpsi zat warna pada pH 2 adalah 0.9958 mg/g, dengan konsentrasi larutan mula-mula 150 mg/L waktu kontak 105 menit, massa biosorben 0.1 g, ukuran partikel 32 µm dan temperature pengeringan biosorben pada 75oC. Model isotherm Langmuir menunjukkan bahwa proses penyerapan berlangsung secara kimia dan biosorpsi homogeny dari adsorbat (Rhodamine B) pada permukaan biosorben membentuk lapisan tunggal dengan nilai R2 0.9966. Analisis XRF menunjukkan bahwa penurunan kadar unsur logam pada cangkang Pensi membuktikan bahwa proses biosorpsi berlangsung dengan pertukaran kation. Hasil analisis spektrum FT-IR membuktikan adanya interaksi antaramolekul Rhodamin B dengan gugus fungsi pada cangkang Pensi. Analisis dengan SEM memperlihatkan bahwa pori-pori cangkang Pensi telah terisi penuh oleh molekul Rhodamin B. Kondisi optimum biosorpsi telah diaplikasikan pada limbah kerupuk merah dengan kapasitas penyerapan sebesar 0,2835 mg/g.   The biosorption of Rhodamine B dyes by Pensi (Corbicula moltkiana) shell has been investigated. The experiment was conducted in batch sistem in order to obtain the optimum conditions of dye biosorption. Biosorption capacity of dye was 0.9958 mg/g at pH 2, initial concentration 150 mg/L, contact time 105 minutes, biosorbent mass 0.1 gram, particle size 32 µ m and biosorbent drying temperature was at 75oC. The Langmuir Isotherm model showed chemisorption and homogeneous biosorption process of adsorbates onto the biosorbent surface formed monolayer dye molecules on the biosorbent surface with R2 value was 0.9966. XRF analysis showed that reduction of metals unsure quantity of pensi shell indicated biosorption process was occupied through cationic exchange. The result of FTIR spectra analysis indicated an interaction between Rhodamin B molecules and functional group of pensi shell. SEM analysis showed that the pensi shell pores were completely filled by Rhodamine B molecules. The optimum condition of biosorption has been aplicated in red chips wastewater industry with biosorption capacity was 0.2835 mg/g.

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