Dynamic mechanical analysis study of the curing of phenol-formaldehyde novolac resins
Abstract
The curing reaction of typical commercial phenol-formaldehyde novolac resins with hexamethylentetraamine (HMTA) was followed by dynamic mechanical analysis. The evolution of the rheological parameters, such as storage modulus G ', loss modulus G ", and tan delta (G " /G '), as a function of time, for samples of the phenolic resins on cloth, was recorded. The curing reaction, leading to the formation of a crosslinked structure, is described by a third-order phenomenological equation. This equation takes into account a self-acceleration effect, as a consequence not only of the chemical reaction of crosslinking after the gel point but of phase segregation as well. This rheokinetic model of the curing of phenolic novolac resins permits the determination of the numerical values of the kinetic equation constants. The influence of the composition, structure, and physical treatment on the curing kinetics of the novolac resins is evaluated.
Keywords:
novolac resins / curing reaction / dynamic mechanical analysisSource:
Journal of Applied Polymer Science, 2001, 81, 8, 1902-1913Publisher:
- Wiley, Hoboken
DOI: 10.1002/app.1623
ISSN: 0021-8995
WoS: 000169309300008
Scopus: 2-s2.0-0035934416
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Marković, S AU - Dunjić, Branko AU - Zlatanić, Alisa AU - Đonlagić, Jasna PY - 2001 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/340 AB - The curing reaction of typical commercial phenol-formaldehyde novolac resins with hexamethylentetraamine (HMTA) was followed by dynamic mechanical analysis. The evolution of the rheological parameters, such as storage modulus G ', loss modulus G ", and tan delta (G " /G '), as a function of time, for samples of the phenolic resins on cloth, was recorded. The curing reaction, leading to the formation of a crosslinked structure, is described by a third-order phenomenological equation. This equation takes into account a self-acceleration effect, as a consequence not only of the chemical reaction of crosslinking after the gel point but of phase segregation as well. This rheokinetic model of the curing of phenolic novolac resins permits the determination of the numerical values of the kinetic equation constants. The influence of the composition, structure, and physical treatment on the curing kinetics of the novolac resins is evaluated. PB - Wiley, Hoboken T2 - Journal of Applied Polymer Science T1 - Dynamic mechanical analysis study of the curing of phenol-formaldehyde novolac resins EP - 1913 IS - 8 SP - 1902 VL - 81 DO - 10.1002/app.1623 ER -
@article{ author = "Marković, S and Dunjić, Branko and Zlatanić, Alisa and Đonlagić, Jasna", year = "2001", abstract = "The curing reaction of typical commercial phenol-formaldehyde novolac resins with hexamethylentetraamine (HMTA) was followed by dynamic mechanical analysis. The evolution of the rheological parameters, such as storage modulus G ', loss modulus G ", and tan delta (G " /G '), as a function of time, for samples of the phenolic resins on cloth, was recorded. The curing reaction, leading to the formation of a crosslinked structure, is described by a third-order phenomenological equation. This equation takes into account a self-acceleration effect, as a consequence not only of the chemical reaction of crosslinking after the gel point but of phase segregation as well. This rheokinetic model of the curing of phenolic novolac resins permits the determination of the numerical values of the kinetic equation constants. The influence of the composition, structure, and physical treatment on the curing kinetics of the novolac resins is evaluated.", publisher = "Wiley, Hoboken", journal = "Journal of Applied Polymer Science", title = "Dynamic mechanical analysis study of the curing of phenol-formaldehyde novolac resins", pages = "1913-1902", number = "8", volume = "81", doi = "10.1002/app.1623" }
Marković, S., Dunjić, B., Zlatanić, A.,& Đonlagić, J.. (2001). Dynamic mechanical analysis study of the curing of phenol-formaldehyde novolac resins. in Journal of Applied Polymer Science Wiley, Hoboken., 81(8), 1902-1913. https://doi.org/10.1002/app.1623
Marković S, Dunjić B, Zlatanić A, Đonlagić J. Dynamic mechanical analysis study of the curing of phenol-formaldehyde novolac resins. in Journal of Applied Polymer Science. 2001;81(8):1902-1913. doi:10.1002/app.1623 .
Marković, S, Dunjić, Branko, Zlatanić, Alisa, Đonlagić, Jasna, "Dynamic mechanical analysis study of the curing of phenol-formaldehyde novolac resins" in Journal of Applied Polymer Science, 81, no. 8 (2001):1902-1913, https://doi.org/10.1002/app.1623 . .