Effect of F/P and OH/P molar ratios and condensation viscosity on the structure of phenol-formaldehyde resol resins for overlays-A statistical study

A two‐level full factorial experimental design with three variables, formaldehyde‐to‐phenol (F/P) molar ratio, hydroxyl‐to‐phenol (OH/P) molar ratio, and condensation viscosity was implemented to determine the effect of the variables on the structure of phenol‐formaldehyde resol resins for paper ove...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied polymer science 2004-03, Vol.91 (5), p.2942-2948
Main Authors: Holopainen, Timo, Alvila, Leila, Savolainen, Pirkko, Pakkanen, Tuula T.
Format: Article
Language:English
Subjects:
13C-NMR
Applied sciences
differential scanning calorimetry (DSC)
Exact sciences and technology
experimental design
gel permeation chromatography (GPC)
paper overlays
phenol formaldehyde (PF) resins
Physicochemistry of polymers
Polymer industry, paints, wood
resins
Technology of polymers
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A two‐level full factorial experimental design with three variables, formaldehyde‐to‐phenol (F/P) molar ratio, hydroxyl‐to‐phenol (OH/P) molar ratio, and condensation viscosity was implemented to determine the effect of the variables on the structure of phenol‐formaldehyde resol resins for paper overlay impregnation. Ten resins were prepared with F/P molar ratios between 1.9 and 2.3, OH/P molar ratios between 0.09 and 0.13, and condensation viscosities between 60 and 180 mPa s. The effect of these three independent variables on the chemical structure was analyzed by 13C‐NMR spectroscopy, on the molecular weight distribution by gel permeation chromatography, and on the reactivity by differential scanning calorimetry. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 91: 2942–2948, 2004
ISSN:0021-8995
1097-4628
DOI:10.1002/app.13511