Gel Point Determination of Biopolymer Based Semi-IPN Hydrogels

Choudhary, Soumitra and Bhatia, Surita R.. (2008) Gel Point Determination of Biopolymer Based Semi-IPN Hydrogels. In: 15th International Conference on Rheology/80th Annual Meeting of the Society of Rheology, August 03-08, 2008, Carlifonia.

Full text not available from this repository. (Request a copy)


Water-based semi-IPNs (Interpenetrating Polymer Networks) were prepared by mixing two biopolymers, alginate and hydrophobically modified ethylhydroxy ethyl cellulose (HMEHEC), followed by crosslinking the alginate by in-situ release of calcium ions. By altering two different parameters, molecular weight of HMEHEC and calcium crosslinker concentration, we were able to fine tune the rheological properties of the semi-IPNs. Rheological studies in the linear viscoelastic region indicate storage moduli comparable to soft tissue for hydrogels having 90 wt% water. The system is found to be stable over a prolonged period of time, i.e. no phase separation is observed. Uniformity of the structure is confirmed by monotonic behavior of the intensity-q slope in SAXS and SANS over the entire length scale.

Item Type: Conference or Workshop Item (Paper)
InterNano Taxonomy: Nanomanufacturing Processes > Assembly Techniques > Surface-to-surface transfer
Nanomanufacturing Characterization Techniques > Diffraction and Scattering > Neutron diffraction
Nanoscale Objects and Nanostructured Materials > Nanocomposites > Polymeric
Nanomanufacturing Characterization Techniques
Collections: Nanomanufacturing Research Collection
Depositing User: Moureen Kemei
Date Deposited: 08 Mar 2010 21:10
Last Modified: 08 Mar 2010 21:10

Actions (login required)

View Item View Item