Structuring gelatin methacryloyl – dextran hydrogels and microgels under shear

Soft Matter, vol. 20, pp. 773–787

Abstract

UV-curing of the GelMA-rich phase. The microstructure of the resulting hydrogels is examined by confocal laser scanning microscopy (CLSM). The results show that the GelMA string phase and GelMA hydrogels with aligned bands can be formed depending on the concentration of dextran and the applied preshear. The influence of the pH of the ATPS is investigated and demonstrates the formation of multiple emulsions upon decreasing the charge density of GelMA. The preshearing of multiple emulsions, following gelation, leads to the formation of porous GelMA microgels. The diversity of the formed structures highlights the application potential of preshearing ATPS in the development of functional soft materials.

Authors 6

1. Ghazi Ben Messaoud corresponding Aachen DWI - Leibniz Institute for Interactive Materials Institute of Physical Chemistry

   DWI – Leibniz Institute for Interactive Materials · RWTH Aachen University

   Affiliation as printed

   DWI-Leibniz Institute for Interactive Materials, Forckenbeckstrasse 50, 52074 Aachen, Germany

   Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52074 Aachen, Germany

2. Evdokia Stefanopoulou Aachen DWI - Leibniz Institute for Interactive Materials Institute of Physical Chemistry

   DWI – Leibniz Institute for Interactive Materials · RWTH Aachen University

   Affiliation as printed

   DWI-Leibniz Institute for Interactive Materials, Forckenbeckstrasse 50, 52074 Aachen, Germany

   Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52074 Aachen, Germany

3. Mattis Wachendörfer Aachen Department of Dental Materials and Biomaterials Research

   Universitätsklinikum Aachen · RWTH Aachen University

   Affiliation as printed

   Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, 52074 Aachen, Germany

4. Sanja Aveic Aachen Department of Dental Materials and Biomaterials Research

   Universitätsklinikum Aachen · RWTH Aachen University

   Affiliation as printed

   Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, 52074 Aachen, Germany

5. Horst Fischer Aachen Department of Dental Materials and Biomaterials Research

   Universitätsklinikum Aachen · RWTH Aachen University

   Affiliation as printed

   Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, 52074 Aachen, Germany

6. Walter H. Richtering corresponding Aachen DWI - Leibniz Institute for Interactive Materials Institute of Physical Chemistry

   DWI – Leibniz Institute for Interactive Materials · RWTH Aachen University

   Affiliation as printed

   DWI-Leibniz Institute for Interactive Materials, Forckenbeckstrasse 50, 52074 Aachen, Germany

   Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52074 Aachen, Germany