Sol-gel-sol-cloudy transitions of aqueous solutions of multi-responsive hydrophilic diblock copolymer poly(methoxytri (ethylene glycol) acrylate-co-acrylic acid)-b-poly(ethoxydi(ethylene glycol) acrylate) was written by Jin, Naixiong;Woodcock, Jeremiah W.;Xue, Chenming;O’Lenick, Thomas G.;Jiang, Xueguang;Jin, Shi;Dadmun, Mark D.;Zhao, Bin. And the article was included in PMSE Preprints in 2012.Reference of 27249-90-7 This article mentions the following:
Herein, we present a strategy to tune the upper boundary of the sol-gel phase diagram of a thermosensitive hydrophilic diblock copolymer. The polymer, poly(c-co-acrylic acid)-b-poly(ethoxydi(ethylene glycol) acrylate) (P(TEGMA-co-AA)-b-PDEGEA), was prepared by reversible addition-fragmentation chain transfer polymerization The higher LCST block of the diblock copolymer contained a small amount of carboxylic acid groups, and thus its LCST can be tuned by changing the pH of the solution, which allowed us to shift the upper boundary of the sol-gel phase diagram. In the experiment, the researchers used many compounds, for example, Benzyl benzodithioate (cas: 27249-90-7Reference of 27249-90-7).
Benzyl benzodithioate (cas: 27249-90-7) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Reference of 27249-90-7
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics