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Gelation Kinetics-Structure Analysis of pH-triggered Low Molecular Weight Hydrogelators.

ABSTRACT: Properties such as shear modulus, gelation time, structure of supramolecular hydrogels are strongly dependent on self-assembly, gelation triggering mechanism and processes used to form the gel. In our work we extend reported rheology analysis methodologies to pH-triggered supramolecular gels to understand structural insight using a model system based on N-N' Dibenzoyl-L-Cystine pH-triggered hydrogelator and Glucono-δ-Lactone as the trigger. We observed that Avrami growth model when applied to time-sweep rheological data of gels formed at lower trigger concentrations provide estimates of fractal dimension which agree well compared with visualization of the microstructure as seen via Confocal Laser Scanning Microscopy, for a range of gelator concentrations.

SUBMITTER: Lakshminarayanan V

PROVIDER: S-EPMC8596822 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature

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Gelation Kinetics-Structure Analysis of pH-triggered Low Molecular Weight Hydrogelators.

Lakshminarayanan Vasudevan V Chockalingam Cindhuja C Mendes Eduardo E van Esch Jan H JH

Chemphyschem : a European journal of chemical physics and physical chemistry 20211007 21

Properties such as shear modulus, gelation time, structure of supramolecular hydrogels are strongly dependent on self-assembly, gelation triggering mechanism and processes used to form the gel. In our work we extend reported rheology analysis methodologies to pH-triggered supramolecular gels to understand structural insight using a model system based on N-N' Dibenzoyl-L-Cystine pH-triggered hydrogelator and Glucono-δ-Lactone as the trigger. We observed that Avrami growth model when applied to ti ...[more]

PMID: 34288310

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