Quick academic help
Don't let the stress of school get you down! Have your essay written by a professional writer before the deadline arrives.
Synthesize The Product Starting From Benzene
Modification of the surface of ZnO particles using silane was also performed by Kotecha . The modifier used was 3-methacryloxypropyltrimethoxysilane. Nanoparticles of zinc oxide were obtained using zinc acetate and potassium hydroxide as substrates. The precipitate was filtered and washed with methanol, and then dried at 130 °C. In this method the silane was introduced into the system during the precipitation. Concurrently with the formation of ZnO particles, a reaction takes place between silane and ZnO. In the course of this reaction H2O is generated and a side reaction takes place, during which the pH increases to 9. The silane-covered zinc oxide particles were introduced into an aqueous suspension and exposed to UV radiation. Based on interpretation of SEM images, the researchers concluded that unmodified zinc oxide contains particles around 100 nm in diameter, forming agglomerates. The introduction of silane into the ZnO structure caused a decrease in the particle size (40–100 nm) and an increase in the diameters of the aggregates, even to the order of micrometres. The irradiated ZnO particles had a fibrous structure “resembling wool”, and offered promising catalytic properties. UV radiation also changes the character of ZnO from hydrophobic to hydrophilic. Analysing the adsorption parameters, Kotecha found that the surface area of silane-modified ZnO initially increases together with the concentration of silane, until that concentration reaches a value of approximately 1–2 mol—then the surface area starts to decrease. For the irradiated ZnO samples, the value of surface area continues to increase as the silane concentration increases, reaching a maximum of approximately 130 m2/g for the highest concentration. The results of Kotecha imply that UV irradiation destroys organic domains. The resulting material has high porosity, large surface area, and hydrophilic properties.
Another modifier applied on the surface of ZnO is polyacrylnitryl (PAN). Studies with that compound were carried out by Chae and Kim . ZnO nanopowder (particles of diameter 87 nm) was dissolved in DMAc to break up agglomerates. PAN was then added to the solution, and it was mixed vigorously at 70 °C. To obtain the nanocomposite, the PAN-ZnO solution was kept at 80 °C for 4 days, and at the next stage was dried at 100 °C for 5 days. The resulting precipitate underwent spectroscopic, thermal and mechanical analysis. The product exhibited better thermal stability than the starting material, due to the barrier role of ZnO. Moreover the ZnO nanoparticles caused a reduction in the crystallization temperature of the modifier (PAN) and an increase in the width of the crystallization peaks. This is linked to heterogeneous nucleation and the reduced mobility of the polymer chains. The introduction of ZnO nanoparticles into the polymer chain caused an increase in the modulus of elasticity on stretching and a reduction in the dynamic load resistance.
Answer to Synthesize the product starting from benzene
To find an alternative to conventional ZnO, which in higher dosage is toxic to aquatic systems, Thomas  synthesized the novel accelerators -benzylimine aminothioformamide(BIAT)-capped-stearic acid-coated nano-ZnO (ZOBS), BIAT-capped ZnO (ZOB), and stearic acid-coated nano zinc phosphate (ZPS), to investigate their effects in NR vulcanization. They studied the effect of these capped compounds on the curing and mechanical properties of natural rubber (NR) vulcanizates. The zinc oxide used in the research was prepared by a sol-gel method, and was then modified using accelerators such as BIAT and fatty acids such as stearic acid. This capping technique reduces agglomeration of nanoparticles of ZnO and is an effective method to improve the curing and physicochemical properties of NR. By capping ZnO with BIAT and stearic acid, it becomes possible to save the extra time and energy required for these particles to diffuse onto the surface of ZnO via the viscoelastic rubber matrix. This provides a further improvement in acceleration of vulcanization and improvement in the physicomechanical properties of the resulting vulcanizates. The mixture containing optimum concentration of BIAT-capped-stearic acid-coated zinc oxide (ZOBS) has superior curing and physicomechanical properties compared with other homologues and the reference mixture containing uncapped ZnO. The increased crosslink density caused by the ZPS particles could increase the stiffness of vulcanizates containing ZPS. The capping technique could improve the scorch safety of rubber compounds by the delayed release of BIAT from the capped ZnO into the rubber matrix for interaction with CBS (conventional accelerator).
Chemistry: Starting with benzene, synthesize these …
Why choose our assistance?
As soon as we have completed your work, it will be proofread and given a thorough scan for plagiarism.
Our clients' personal information is kept confidential, so rest assured that no one will find out about our cooperation.
We write everything from scratch. You'll be sure to receive a plagiarism-free paper every time you place an order.
We will complete your paper on time, giving you total peace of mind with every assignment you entrust us with.
Want something changed in your paper? Request as many revisions as you want until you're completely satisfied with the outcome.
We're always here to help you solve any possible issue. Feel free to give us a call or write a message in chat.
How it works
You submit your order instructions
We assign an appropriate expert
The expert takes care of your task
We send it to you upon completion
Average quality score
"I have always been impressed by the quick turnaround and your thoroughness. Easily the most professional essay writing service on the web."
"Your assistance and the first class service is much appreciated. My essay reads so well and without your help I'm sure I would have been marked down again on grammar and syntax."
"Thanks again for your excellent work with my assignments. No doubts you're true experts at what you do and very approachable."
"Very professional, cheap and friendly service. Thanks for writing two important essays for me, I wouldn't have written it myself because of the tight deadline."
"Thanks for your cautious eye, attention to detail and overall superb service. Thanks to you, now I am confident that I can submit my term paper on time."
"Thank you for the GREAT work you have done. Just wanted to tell that I'm very happy with my essay and will get back with more assignments soon."