Phase Transformation and Rheological Behaviour of Highly Paraffinic “Waxy” Mixtures | Zendy

Tiwary Dharmendra | Zendy; Mehrotra Anil K. | Zendy

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Phase Transformation and Rheological Behaviour of Highly Paraffinic “Waxy” Mixtures

Author(s) -

Tiwary Dharmendra,

Mehrotra Anil K.

Publication year - 2004

Publication title -

the canadian journal of chemical engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.404

H-Index - 67

eISSN - 1939-019X

pISSN - 0008-4034

DOI - 10.1002/cjce.5450820121

Subject(s) - wax , differential scanning calorimetry , rheology , viscometer , shear rate , solvent , materials science , phase (matter) , crystallization , hexadecane , phase diagram , viscosity , chromatography , chemistry , thermodynamics , chemical engineering , organic chemistry , composite material , physics , engineering

An experimental investigation was undertaken for the rheology and phase transformation of prepared solutions comprising a paraffin wax dissolved in n ‐dodecane or n ‐hexadecane. The liquid‐solid phase transformation in wax‐solvent mixtures was investigated through the measurement of wax appearance/disappearance temperature (using cross polar microscopy, differential scanning calorimetry, viscometry and a visual method), pour point temperature and crystallization temperature. The results were utilized to prepare a temperature‐composition phase diagram for the wax+ n ‐C 16 H 34 pseudo‐binary system. The effects of composition, temperature, cooling rate and shear rate were studied on the rheology of wax‐solvent mixtures. A correlation was developed for the apparent viscosity of wax‐solvent mixtures.

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