Abstract
The gelation conditions of cellulose/aqueous calcium thiocyanate solution system were determined by temperature jump method and the structure of the gel was analyzed by DSC and R-ray measurements. The time necessary to occurring gelation was shorter for the higher molecular weight sample, the solution with higher concentration, and at lower temperature. For the all solutions, cloud point was observed before occurring gelation, suggesting that the gelation was induced by Liquid-liquid two phase separation. The heat to formation of l mol of network junctions in the gel and the mean molecular weight of the chain adjoining adjacent crosslinks were estimated from melting point determined by ball drop method and the heat of fusion by DSC. The X-ray diffraction curve indicated that the gel is almost amorphous.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
