Solvent effects on sol-gel transition of sodium alginate solutions

Honghe Zheng, Qingzhi Zhang, Jianji Wang, Zhengyu Wang, Konno Mikio, Saito Shozaburo

研究成果: Article査読


The cooperation of solute and solvent is taken as the gelation condition. The three dimensional percolation of blobs is taken as the gelation model. Phase transition of polyelectrolyte solution is then considered as a process of the formation and the percolation of blobs. By the study of the gelation of different concentration of alginate solutions induced by calcium cation, the nature of sol-gel transition has been suggested. Critical exponent of relative viscosity near the gelation point was determined as κ=0.90∼0.97. A power-law relation was confirmed between the gelation point ∫c and alginate concentration c. In addition, the correct range of application of the power-law relation of relative viscosity near gelation point, ηrel ∝ (∫c - ∫), has also been defined.

ジャーナルActa Physico - Chimica Sinica
出版ステータスPublished - 1996

ASJC Scopus subject areas

  • 物理化学および理論化学


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