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Mixture Design Approach on the Physical Properties of Lignin-Resorcinol-Formaldehyde Xerogels
Joint Authors
Castro, Chris D.
Quintana, Germán C.
Source
International Journal of Polymer Science
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-10-01
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Organic xerogels were functionalized by incorporating sugarcane bagasse lignin from soda pulping black liquor, not used so far in this materials, with the aim of introducing new functional groups on traditional gels that could improve its adsorptive capacity.
Two mixing designs were applied to identify the reactive combinations that allow a well gel formation and to adjust models that predict physical properties.
The designs study five components: resorcinol ( R , 0.04–0.3), lignin ( L , 0.004–0.14), formaldehyde ( F , 0.08–0.17), water ( W , 0.45–0.8), and NaOH ( C , 0.0003–0.0035).
The first experimental design was an extreme vertices design and its results showed shrinkage between 4.3 and 59.7 and a bulk density from 0.54 to 1.3; a mass ratio L R / F near 1.5 was required for gel formation.
In the second design a D-Optimal was used to achieve better adjusted coefficients and incorporate the largest possible amount of lignin in the gels.
Bulk density varies from 0.42 to 0.9, shrinkage varies from 3.42 to 25.35, and specific surface area reaches values of 451.86 m2/g with 13% lignin and 270 m2/g with 27% lignin.
High catalyst content improves lignin dissolution and increase shrinkage and bulk density of xerogels and bulk density.
Lignin contributes to reducing shrinkage and specific surface area due to his compact and rigid structure.
American Psychological Association (APA)
Castro, Chris D.& Quintana, Germán C.. 2015. Mixture Design Approach on the Physical Properties of Lignin-Resorcinol-Formaldehyde Xerogels. International Journal of Polymer Science،Vol. 2015, no. 2015, pp.1-11.
https://search.emarefa.net/detail/BIM-1066742
Modern Language Association (MLA)
Castro, Chris D.& Quintana, Germán C.. Mixture Design Approach on the Physical Properties of Lignin-Resorcinol-Formaldehyde Xerogels. International Journal of Polymer Science No. 2015 (2015), pp.1-11.
https://search.emarefa.net/detail/BIM-1066742
American Medical Association (AMA)
Castro, Chris D.& Quintana, Germán C.. Mixture Design Approach on the Physical Properties of Lignin-Resorcinol-Formaldehyde Xerogels. International Journal of Polymer Science. 2015. Vol. 2015, no. 2015, pp.1-11.
https://search.emarefa.net/detail/BIM-1066742
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1066742