René Haverkamp
6 Papers
René Haverkamp is an academic researcher. The author has contributed to research in topics: Chemistry & Medicine. The author has co-authored 3 publications.
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Papers
Hard carbon microspheres with bimodal size distribution and hierarchical porosity via hydrothermal carbonization of trehalose
Martin Wortmann,Waldemar Keil,Elise Diestelhorst,M Westphal,René Haverkamp,Bennet Brockhagen,Laila Bondzio,Christian Weinberger,Michael Tiemann,Andreas Hütten,Thomas Hellweg,Günter Reiss,Claudia Schmidt,Klaus Sattler,Natalie Frese +14 more
TL;DR: In this article , a trehalose-derived hard carbon microspheres were examined by small-angle X-ray scattering and visualized by charge-compensated helium ion microscopy, showing that they have a multimodal pore size distribution with abundant macropores > 100 nm, mesopores > 10 nm, and micropores < 2 nm.
Growth of Smart Microgels in a Flow Reactor Scrutinized by In-Line SAXS.
TL;DR: In this article , a continuous flow setup for in situ investigation of microgel growth with small-angle X-ray scattering (SAXS) is established, where poly(n-propylacrylamide) (PNNPAM) and poly(N-isopropylacricrylamides) (PNIPAM) microgels are synthesized in H2O at different residence times inside a continuously flow reactor.
3
Cation release from different carboxymethyl cellulose hydrogels
TL;DR: In this paper , a Schiff base reaction between dialdehyde carboxymethyl cellulose and gelatin is used to formulate biodegradable slow-release fertilizers, and the results demonstrate that the correlation length of the cross-linked hydrogels is dominant for the release of divalent cations.
Release Kinetics of Potassium, Calcium, and Iron Cations from Carboxymethyl Cellulose Hydrogels at Different pH Values.
Yi Qu,René Haverkamp,Zhaorui Jin,Desiree Jakobs-Schönwandt,Anant V Patel,Thomas Hellweg +5 more
- 25 Oct 2023
TL;DR: The release kinetics of potassium, calcium, and iron cations from carboxymethyl cellulose hydrogels is influenced by the hydrogel's correlation length and the pH value. Higher valence and alkaline condition favor slower release rates.
2
Confined microemulsions: pore diameter induced change of the phase behavior
René Haverkamp,Margarethe Dahl,Tim Julian Stank,Jessica Hübner,Peter Strasser,Stefan Wellert,Thomas Hellweg +6 more
TL;DR: The domain size of a bicontinuous microemulsion changes with temperature in large pores.