Group contribution modeling of viscosity during urethane reaction
-
Zhong Fu
and
Galen J. Suppes
Abstract
Based on experimental viscosity data collected from single material and binary system mixtures, a group contribution method was introduced to estimate viscosities of a range of polyol oligomers and urethane polymers at temperatures from 25 to 150°C. Use of mixture rules then extends the estimation method to multi-component reacting systems. Mixture viscosity data were used to determine the Gibbs free energy (G) in the Grundberg-Nissan equation which can be used to estimate mixture viscosities with correction for some non-idealities. The resulting model is able to accurately predict mixture viscosities based on binary interaction. The goal of this work is to estimate the viscosities of urethane-forming reactions; accurate viscosity information is critical as an intermediate step to predict how successful a foam formulation would be and to ultimately estimate the final physical properties of the foam.
Acknowledgments
The authors wish to thank the United Soybean Board for financial support of the experimental studies used to validate the modeling work. The authors thank FSI. Company for providing foam formulas and technology support. None of the authors has conflicts of interest with companies producing Rubinate M isocyanate, Voranol 360, Poly G76-635, Jeffol R-315x and Voranol 490.
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©2015 by De Gruyter
Articles in the same Issue
- Frontmatter
- Review
- Oligomers with structural elements of imidazolidinetrione obtained from oxamic acid and oxamide: polyurethane foams modified by structural elements of imidazolidinetrione
- Original articles
- Group contribution modeling of viscosity during urethane reaction
- Peroxide vulcanization of natural rubber. Part II: effect of peroxides and co-agents
- Evaluation of long-term stability and degradation on polycarbonate based plastic glass
- Designing, characterization, and thermal behavior of triazine-based dendrimers
- Processing and characterization of electrospun trans-polyisoprene nanofibers
- Effect of electric field on gas-assisted melt differential electrospinning with hollow disc electrode
- Physicochemical characteristics of poly(piperazine-amide) TFC nanofiltration membrane prepared at various reaction times and its relation to the performance
- Characterization and application of methylcellulose and potato starch blended films in controlled release of urea
- The interaction of sodium carboxymethylcellulose with gelatin in the absence and presence of NaCl, CaCl2 and glucose
Articles in the same Issue
- Frontmatter
- Review
- Oligomers with structural elements of imidazolidinetrione obtained from oxamic acid and oxamide: polyurethane foams modified by structural elements of imidazolidinetrione
- Original articles
- Group contribution modeling of viscosity during urethane reaction
- Peroxide vulcanization of natural rubber. Part II: effect of peroxides and co-agents
- Evaluation of long-term stability and degradation on polycarbonate based plastic glass
- Designing, characterization, and thermal behavior of triazine-based dendrimers
- Processing and characterization of electrospun trans-polyisoprene nanofibers
- Effect of electric field on gas-assisted melt differential electrospinning with hollow disc electrode
- Physicochemical characteristics of poly(piperazine-amide) TFC nanofiltration membrane prepared at various reaction times and its relation to the performance
- Characterization and application of methylcellulose and potato starch blended films in controlled release of urea
- The interaction of sodium carboxymethylcellulose with gelatin in the absence and presence of NaCl, CaCl2 and glucose
