Related Experiment Video
Updated: Jan 30, 2026

Nanosponge Tunability in Size and Crosslinking Density
Published on: August 4, 2017
A comparison of the network structure and inner dynamics of homogeneously and heterogeneously crosslinked PNIPAM
Judith Witte1, Tetyana Kyrey, Jana Lutzki
1Institute of Chemistry, TU Berlin, Strasse des 17. Juni 124, 10623 Berlin, Germany. judith.witte@tu-berlin.de.
Abstract:
Poly(N-isopropylacrylamide) microgel particles were prepared via a "classical" surfactant-free precipitation polymerization and a continuous monomer feeding approach. It is anticipated that this yields microgel particles with different internal structures, namely a dense core with a fluffy shell for the classical approach and a more even crosslink distribution in the case of the continuous monomer feeding approach. A thorough structural investigation of the resulting microgels with dynamic light scattering, atomic force microscopy and small angle neutron scattering was conducted and related to neutron spin echo spectroscopy data. In this way a link between structural and dynamic features of the internal polymer network was made.
Related Concept Videos
Test for Homogeneity
Protein Networks
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
Dynamic Equilibrium
The Sense of Self: Reflected Self-Appraisal and Social Comparison
Network Covalent Solids
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
Stereotype Content Model

