Gelation as studied by proton multiple-quantum NMR

Kay Saalwächter; Moshe Gottlieb; Ruigang Liu; Wilhelm Oppermann

doi:10.1021/ma062776b

Gelation as studied by proton multiple-quantum NMR

Kay Saalwächter, Moshe Gottlieb, Ruigang Liu, Wilhelm Oppermann

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

47 Scopus citations

Abstract

A novel NMR approach for the study of gelation in flexible polymer systems is presented, and the data are compared to results from Rheological and light scattering experiments. Proton multiple-quantum NMR, also applicable at low field and amenable to high-throughput experimentation, represents a simple and robust yet powerful method that allows one to detect the topological gel point, quantify the gelation kinetics, and characterize composition, microstructure, and dynamics of the forming and the final gel. Applications to end-linked and statistically cross-linked poly(dimethylsiloxane) chains in the bulk, as well as statistically cross-linked poly-(styrene) chains in solution are presented, and good agreement as well as complementarity between the results from the different methods is found.

Original language	English
Pages (from-to)	1555-1561
Number of pages	7
Journal	Macromolecules
Volume	40
Issue number	5
DOIs	https://doi.org/10.1021/ma062776b
State	Published - 6 Mar 2007

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/ma062776b

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abstract = "A novel NMR approach for the study of gelation in flexible polymer systems is presented, and the data are compared to results from Rheological and light scattering experiments. Proton multiple-quantum NMR, also applicable at low field and amenable to high-throughput experimentation, represents a simple and robust yet powerful method that allows one to detect the topological gel point, quantify the gelation kinetics, and characterize composition, microstructure, and dynamics of the forming and the final gel. Applications to end-linked and statistically cross-linked poly(dimethylsiloxane) chains in the bulk, as well as statistically cross-linked poly-(styrene) chains in solution are presented, and good agreement as well as complementarity between the results from the different methods is found.",

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AU - Liu, Ruigang

AU - Oppermann, Wilhelm

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N2 - A novel NMR approach for the study of gelation in flexible polymer systems is presented, and the data are compared to results from Rheological and light scattering experiments. Proton multiple-quantum NMR, also applicable at low field and amenable to high-throughput experimentation, represents a simple and robust yet powerful method that allows one to detect the topological gel point, quantify the gelation kinetics, and characterize composition, microstructure, and dynamics of the forming and the final gel. Applications to end-linked and statistically cross-linked poly(dimethylsiloxane) chains in the bulk, as well as statistically cross-linked poly-(styrene) chains in solution are presented, and good agreement as well as complementarity between the results from the different methods is found.

AB - A novel NMR approach for the study of gelation in flexible polymer systems is presented, and the data are compared to results from Rheological and light scattering experiments. Proton multiple-quantum NMR, also applicable at low field and amenable to high-throughput experimentation, represents a simple and robust yet powerful method that allows one to detect the topological gel point, quantify the gelation kinetics, and characterize composition, microstructure, and dynamics of the forming and the final gel. Applications to end-linked and statistically cross-linked poly(dimethylsiloxane) chains in the bulk, as well as statistically cross-linked poly-(styrene) chains in solution are presented, and good agreement as well as complementarity between the results from the different methods is found.

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Gelation as studied by proton multiple-quantum NMR

Abstract

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