CMC is not exactly an instantaneous â€œblack-whiteâ€ transition from a 100% random solution to a 100% micellar solution (where the micelle concentration is 100%) upon increasing copolymer levels or upon dilution (Loh 802). The figures do, however, change even if not by exactly 100%. Analysis of the block copolymer molecular structure results and the critical micelle concentration weight was undertaken by the use of ionic liquids (Ruiz et al. 3229) that acted as main model solvents. The researchers used Pyrene Fluorescence (Bains et al. 6209) to measure CMCs as a block MW function for three polystyreneâ€“poly (ethylene oxide) samples and three PSâ€“poly (methyl methacrylate) samples in 1-ethyl-3methylimidazolium bis(trifluoromethylsulfonyl) amide (Jean and Ache 984). The findings were that the amount of CMC reduced by a shy value of 1.5 in the PSPEO, in which the solvophobic PS block MW was unchanged at (20 000) or 100% while the PEO block MW reduced considerably from 15 000 to 3000. These findings conformed accurately with those of the self-consistent-field (SCF) theory (Egorov 2). A higher decrease of about 5 was observed in the PMMA series. Here the solvophobic PS block MW was increased from 3000 to 11 000 while keeping a persistent overall MW (ca. 15 000). However, this reduction was much weaker than the one forecasted by SCF calculations.
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.Read more
Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.Read more
Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.Read more
Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.Read more
By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.Read more