The effect of the molecular weight of polyethylene glycol on the microstructure of freeze-cast alumina
Source abstract
Abstract
Abstract Soluble polymers are frequently used in freeze casting of ceramics to improve the structural integrity of the unfired ceramics. This study examined the effect of the molecular weight of polyethylene glycol (PEG) on the sintered microstructure of freeze-cast porous alumina ceramics. Increasing the molecular weight was shown to reduce the measured pore size from 10 μm to 5.5 μm, with the observed trend being qualitatively consistent with the effects of molecular weight on the diffusivity of PEG and constitutional supercooling.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Injection Molding Process and Properties · Materials Engineering and Processing
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (30)
Show source-provided references
1. Applications of porous ceramics10.4028/www.scientific.net/KEM.122-124.305 ↗
2. Gas (Particulate) filter
3. Heterogeneously catalyzed processes with porous cellular ceramic monoliths
4. Biomedical applications: tissue engineering
5. Synthesis of porous ceramics with complex pore structure by freeze-dry processing10.1111/j.1151-2916.2001.tb00638.x ↗
6. Synthesis of porous silicon nitride with unidirectionally aligned channels using freeze-drying process10.1111/j.1151-2916.2002.tb00426.x ↗
7. Pore structure of porous ceramics synthesized from water-based slurry by freeze-dry process10.1023/A:1017946518955 ↗
8. Fabrication of highly porous silicate ceramics by freeze-drying10.1002/9780470294703.ch18 ↗
9. Ice-templated porous alumina structures10.1016/j.actamat.2006.11.003 ↗
10. Effect of polyethylene glycol on the microstructure of freeze-cast alumina10.1111/j.1551-2916.2008.02616.x ↗
11. New freeze-casting technique for ceramics with sublimable vehicles10.1111/j.1151-2916.2004.tb06331.x ↗
12. Porous ceramic bodies with interconnected pore channels by a novel freeze casting technique10.1111/j.1551-2916.2005.00176.x ↗
13. Highly porous hydroxyapatite bioceramics with interconnected pore channels using camphene-based freeze casting10.1016/j.matlet.2006.08.065 ↗
14. Freezing dilute ceramic/camphene slurry for ultra-high porosity ceramics with completely interconnected pore networks10.1111/j.1551-2916.2006.01222.x ↗
15. Ceramics with special porous structures fabricated by freeze-gelcasting: using tert-butyl alcohol as a template10.1111/j.1551-2916.2007.01957.x ↗
16. Aligned two and three-dimensional structures by directional freezing of polymers and nanoparticles10.1038/nmat1487 ↗
17. Freeze-casting of porous ceramics: a review of current achievements and issues10.1002/adem.200700270 ↗
18. Kurz · 1998
19. Evolution of porosity by freeze casting and sintering of sol–gel derived ceramics10.1023/A:1020718225164 ↗
20. Particle redistribution during dendritic solidification of particle suspensions10.1111/j.1551-2916.2006.01094.x ↗
21. Generation of large pore channels for bone tissue engineering using camphene-based freeze casting10.1111/j.1551-2916.2007.01670.x ↗
22. Control of lamellae spacing during freeze casting of ceramics using double-side cooling as a novel processing route10.1111/j.1551-2916.2008.02673.x ↗
23. Metastable and unstable cellular solidification of colloidal suspensions10.1038/nmat2571 ↗
24. Morphological instability in freezing colloidal suspensions10.1098/rspa.2006.1790 ↗
25. Experimental verification of morphological instability in freezing aqueous colloidal suspensions10.1103/PhysRevLett.100.238301 ↗
26. Polyethylene glycols
27. Carbowax® Polyethylene Glycols, Product Information Bulletin, Union Carbide Corporation, 1986, p. 14.
28. Flory · 1953
29. Precise measurement of the self-diffusion coefficient for poly(ethylene glycol) in aqueous solution using uniform oligomers10.1063/1.1948378 ↗
30. The effect of polyvinyl alcohol on the microstructure and permeability of freeze-cast alumina10.1111/j.1551-2916.2009.03398.x ↗