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Effect of reactant ratio and temperature on the characteristics of phenol–formaldehyde foams

✍ Scribed by Daljit Singh; Suneeta Ohri

Publisher
John Wiley and Sons
Year
1982
Tongue
English
Weight
291 KB
Volume
27
Category
Article
ISSN
0021-8995

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## Abstract The problem of overly high contents of remnant monomers (free phenol and free formaldehyde) in phenolic foam was studied. Free phenol was characterized by iodimetry, and free formaldehyde was characterized by a hydroxylamine hydrochloride method. The effect of the phenol/formaldehyde mo