Using Rheo-Small-Angle Neutron Scattering to Understand How Functionalised Dipeptides Form Gels

Kate McAulay; Lisa Thomson; Lionel Porcar; Ralf Schweins; Najet Mahmoudi; Dave J. Adams; Emily R. Draper

doi:10.1055/s-0040-1708832

CC BY-NC-ND 4.0 · Organic Materials 2020; 02(02): 108-115
DOI: 10.1055/s-0040-1708832

Focus Issue: Structure to Function in Supramolecular Polymers and Materials

Original Article

The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/). (2020) The Author(s).

Using Rheo-Small-Angle Neutron Scattering to Understand How Functionalised Dipeptides Form Gels

Kate McAulay

^aSchool of Chemistry, University of Glasgow, Glasgow, G12 8QQ, United Kingdom

,

Lisa Thomson

^aSchool of Chemistry, University of Glasgow, Glasgow, G12 8QQ, United Kingdom

,

Lionel Porcar

^bLarge Scale Structures Group, Institut Laue-Langevin, 71 Avenue des Martyrs, CS 20156, F-38042 Grenoble, CEDEX 9, France

,

Ralf Schweins

^bLarge Scale Structures Group, Institut Laue-Langevin, 71 Avenue des Martyrs, CS 20156, F-38042 Grenoble, CEDEX 9, France

,

Najet Mahmoudi

^cISIS Pulsed Neutron Source, Rutherford Appleton Laboratory, Didcot, OX11 0QX, United Kingdom

,

Dave J. Adams

^aSchool of Chemistry, University of Glasgow, Glasgow, G12 8QQ, United Kingdom

,

Emily R. Draper

^aSchool of Chemistry, University of Glasgow, Glasgow, G12 8QQ, United Kingdom

› Author Affiliations

Abstract

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Abstract

We explore the use of rheo-small-angle neutron scattering as a method to collect structural information from neutron scattering simultaneously with rheology to understand how low-molecular-weight hydrogels form and behave under shear. We examine three different gelling hydrogel systems to assess what structures are formed and how these influence the rheology. Furthermore, we probe what is happening to the network during syneresis and why the gels do not recover after an applied strain. All this information is vital when considering gels for applications such as 3D-printing and injection.

Key Words

rheo-SANS - SANS - gel - dipeptide

Full Text

References

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Supplementary Material

Supporting Information