Carbon Footprint Essay

New method of synthesis of oligoetherols with carbazole ring Renata Lubczak Abstract: The new method of synthesis of multifuntional oligoetherols with carbazole ring suitable for obtaining the polyurethane foams of enhanced thermal resistance was presented. At the first step of the synthesis the carbazole was reacted with excess glycidol to obtain the product of (n +1) functionality, where n is number of equivalents of glycidol reacted with carbazole. Carbazole reacts with glycidol without…

In pursuit of our continued interest in the development of solvent-free and green synthetic procedures, we decided to explore the use of tartaric acid catalyst for synthesis of polysubstituted quinolines via Friedlander condensation in high to excellent yields at 70 °C under solvent-free conditions. Initially the reaction between 2-aminobenzophenone (1.0 mmol) and dimedone (1.0 mmol), as the model reaction was examined in the presence varying amount of tartaric acid as catalyst and the results…

2. Materials and methods 2.1. Chemicals Zingerone was obtained from Alfa Aesar, Heysham, UK. Cisplatin, Bradford reagent, trichloroacetic acid (TCA), thiobarbituric acid (TBA), reduced glutathione (GSH), glacial metaphosphoric acid (Gmpa), 5,5ˊ-dithiobis-(2-nitrobenzoic acid) (DTNB), proteinase K and agarose were purchased from Sigma-Aldrich Co, MO, USA. All other chemicals and solvents used were of the highest purity grade available. 2.2. Animals Sixty Adult male albino rats (180-200g) were…

macrocyclic organic molecules Phthalocyanines (1) which are comparable to the naturally occurring porphyrin (2) ring systems shown in (Figure 1). The porphyrin molecule consists up of four pyrrole subunits which are associated in n-conjugation by methine carbons. 1 2 Figure 1: structures of phthalocyanine and porphyrins molcule The compound Phthalocyanine molecule consist of four…

In gloves industry, and for the maximum care of hands, Polyurethane-made gloves has shown the most remarkable effect than any other material. Known as one of the most versatile quality polymers, Polyurethane gloves are in huge demands at the consumer end. Well, what are the qualities that make a Polyurethane glove the best? To be honest, you can't find much stronger grip (and no sticky sensation) in a glove made by Polyurethane than any other material. The other qualities of this material are…

The role of oxysterols in human body and disease 1. Introduction Oxysterols are 27-carbon derivatives of cholesterol created by spontaneous or enzymatic oxidation (Figure 1, (Brown and Jessup, 2009)). The oxidation of cholesterol occurs either on the side chain or on the sterol core. Side chain oxidation generates, e.g., 24-hydroxycholesterol (24-HC), 25-hydroxycholesterol (25-HC) or 27-hydroxycholesterol (27-HC) while the core oxidation gives rise to ring oxysterols, mostly ring-B oxysterols,…

The zeolite XRD analysis result showed that it is 100% Clinoptilolite ─ Ca with the chemical formula Si29.04Al6.96O96.40Na1.92Ca1.57Ba0.32K0.56Mg0.72. Particle size distribution and Zeta potential for minerals have been carried out using Zeta sizer nano series (Nano ZS), Malvern, UK - Size range (nm):0.6:6000 nm and Zeta potential range (mV): (-200:200 mV) and analysis results are presented in Table 3. They The minerals were applied before planting in two separate rates ≈ 595.24 and 1190.48 5…

The polyurethane segments show high intersegment attraction such as hydrogen bonding and may be able to crystallize and form hard segments. In such polymers hard segments with Tg well above normal ambient temperature are separated by polyol soft segments, which in the mass are rubbery in nature. Hard and soft segments are arranged alternate along the polymer chain. Fig.7. Polyurethane chain configuration [32] 4.2.2. Polyurethane properties and advantages for product development…

2-methyl-2-butanol with HCl to form 2-chloro-2-methylbutane, and to understand Sn1 and Sn2 reactions, in terms of how they are different and why one is more likely to happen over the other. The OH group in 2-methl-2-butanol is attached to a tertiary Carbon, meaning the reaction should occur via Sn1, a two-step reaction, and Cl should replace the OH group, to form a tertiary halide. HCl was added to 2-methyl-2-butanol and then several extractions were done to purify the product. The percent…

Cyclohexene distillation A fraction containing primarily cyclohexene primarily cyclohexene and water is separated from raw cyclohexanone in Cyclohexene column. Raw Cyclohexanone is fed from storage tank to Cyclohexene Column via Cyclohexene heater. In Cyclohexene Heater, the feed is heated up to about 1200C with the heat carried by the bottom product from Alcohols column. The Cyclohexene column is operated at atmospheric pressure and temperatures of 850C at top and 1650C at bottom. The vapours…