Dynamics of polymers in concentrated solutions: A weaker self-concentration effect was written by Yan, Zhi-Chao;Wang, Wei. And the article was included in Polymer in 2018.Recommanded Product: 5444-75-7 The following contents are mentioned in the article:
We examine the validity of the Lodge-McLeish (LM) self-concentration model on polymer dynamics in concentrated polymer/small mol. solutions Three solutions, 1,2-polybutadiene/2-ethylhexyl benzoate, 1,4-polyisoprene/phenyloctane, and polystyrene/2-ethylhexyl benzoate, are investigated by rheol. technique. The temperature dependence of their normalized terminal relaxation times is fitted by the WLF equation to extract the effective glass transition temperature The calculated self-concentration is found lower than the LM prediction, in contrast with the significant values in miscible polymer blends. According to the mol. dynamic simulation, this weak self-concentration effect is explained by the overestimation of the polymer’s interchain concentration, which is postulated as the global average concentration in the original LM model. The lower interchain concentration in solutions is attributed to the higher probabilities for small mols. to fill the cooperative volume Both exptl. and simulation results may motivate the further theor. modification on the interchain concentration in order to establish a self-consistent model predicting both miscible blends and polymer solutions This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Recommanded Product: 5444-75-7).
2-Ethylhexyl benzoate (cas: 5444-75-7) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Recommanded Product: 5444-75-7
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics