Abstract
The key features of applying radiation techniques to synthesize microgels is the additive-free initiation and an easy process control. Therefore, radiation methods are very suitable for applications in biosciences. Microgels with desired dimensions can be obtained simply by varying the experimental parameters such as concentration, radiation dose, or radiation temperature. By intramolecular cross-linking of single polymer chains even nanogels with diameters smaller than 0.1 μm can be synthesized. Examples of microgels based on different polymers are summarized in this article. The structure of various polymeric architectures such as micelles or interpolymer complexes can be fixed by irradiation to form microgels with specific properties. Their huge application potential as well as selective examples are described.
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- CMC:
-
Critical micelle concentration
- CP:
-
Cloud point
- DLS:
-
Dynamic light scattering
- FESEM:
-
Field emission scanning electron microscopy
- Gy:
-
Gray (1 Gy = 1 J kg− 1)
- HPC:
-
Hydroxypropyl cellulose
- MWD:
-
Most-probable molecular weight distribution
- PAA:
-
Poly(acrylic acid)
- PAAm:
-
Polyacrylamide
- PEO:
-
Poly(ethylene oxide)
- PI:
-
Polyisoprene
- PPO:
-
Poly(propylene oxide)
- PPy:
-
Polypyrrole
- PVME:
-
Poly(vinyl methyl ether)
- PVP:
-
Poly(vinyl pyrrolidone)
- Py:
-
Pyrrole
- SEM:
-
Scanning electron microscopy
- SLS:
-
Static light scattering
- D :
-
Dose
- D g :
-
Gelation dose
- D V :
-
Virtual dose
- g :
-
Gel fraction
- g′ :
-
Viscosity branching parameter
- G s :
-
Radiation yield of chain scission
- G x :
-
Radiation yield of cross-linking
- M n :
-
Number-averaged molecular weight
- M w :
-
Weight-averaged molecular weight
- p 0 :
-
Degradation density
- q 0 :
-
Cross-linking density
- R g :
-
Radius of gyration
- R h :
-
Hydrodynamic radius
- s :
-
Sol content
- T c :
-
Phase transition temperature
- u 2, 0 :
-
Weight-averaged degree of polymerization before irradiation
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Krahl, F., Arndt, KF. (2010). Synthesis of Microgels by Radiation Methods. In: Pich, A., Richtering, W. (eds) Chemical Design of Responsive Microgels. Advances in Polymer Science, vol 234. Springer, Berlin, Heidelberg. https://doi.org/10.1007/12_2010_76
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DOI: https://doi.org/10.1007/12_2010_76
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