Scaling of Polymer Solutions as a Quantitative Tool
Scaling of Polymer Solutions as a Quantitative Tool
复制标题
聚合物溶液的扩展作为定量工具
DOI:
10.1021/acs.macromol.0c02810
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发表时间:
2021
期刊:
影响因子:
5.5
通讯作者:
Sayko, Ryan
中科院分区:
文献类型:
--
作者:
Dobrynin, Andrey V.;Jacobs, Michael;Sayko, Ryan
Knowledge of interaction parameters and Kuhn length for a polymer/solvent pair is a foundation of polymer physics of synthetic and biological macromolecules. Here, we demonstrate how to obtain these parameters from the concentration dependence of solution viscosity. The centerpiece of this approach is the scaling relationship between solution correlation length (blob size) ξ =lgν/Band the number of monomers per correlation blobgfor polymers with monomer projection lengthl. The values of parameterBand exponentvare determined by solvent quality for the polymer backbone, chain Kuhn length, and types and strength of monomer–monomer and monomer–solvent interactions. ParameterBassumes valuesBg,Bth, and 1 for exponentv= 0.588, 0.5, and 1, respectively. In particular, we take advantage of the linear relationship between specific viscosity ηspin the unentangled (Rouse) regime and the number of correlation blobsNw/gper chain with the weight average degree of polymerization,Nw, andg=B3/(3ν – 1)(cl3)1/(1 – 3ν)as a function of monomer concentration,c, and the correspondingBparameter. The values of theBparameters are extracted from the plateaus of normalized specific viscosity ηsp(c)/Nw(cl3)1/(3ν – 1)or their locations as a function of the monomer concentrationcin different solution regimes. The extension of the approach to entangled polymer solutions provides a means to obtain the chain packing number,Pe, and to complete the set of parameters {Bg,Bth,Pe} (a system “fingerprint”) uniquely describing static and dynamic solution properties of a polymer/solvent pair. This approach is illustrated for solutions of poly(ethylene oxide) in water, poly(styrene) in tetrahydrofuran and toluene, poly(methyl methacrylate) in ionic liquids, and sodium carboxymethylcellulose in water at high salt concentrations.
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影响因子:
4.6
作者:
Dobrynin, Andrey V.
通讯作者:
Dobrynin, Andrey V.
影响因子:
5.5
作者:
DEGENNES, PG
通讯作者:
DEGENNES, PG
影响因子:
5.5
作者:
T. A. Kavassalis;J. Noolandi
通讯作者:
J. Noolandi
影响因子:
5.5
作者:
Dobrynin, Andrey, V;Jacobs, Michael
通讯作者:
Jacobs, Michael
DOI:
--
发表时间:
1977
期刊:
影响因子:
--
作者:
P. Pincus
通讯作者:
P. Pincus