Document Type
Thesis
Date of Award
9-30-1982
Degree Name
Master of Science in Engineering Science- (M.S.)
Department
Chemical Engineering and Chemistry
First Advisor
George Y. Lei
Second Advisor
Ching-Rong Huang
Third Advisor
William H. Snyder
Abstract
The o-chlorophenol-formaldehyde polymer was prepared by reacting 1.1 mole of formaldehyde with one mole of o-chlorophenol in the presence of 3.5% p-toluene sulfonic acid catalyst. The polymer was melt spun into fiber form and the fiber was in turn cured by a mineral spirit solution containing 8%, 9%, or 10% succinyl chloride. This was a new crosslinker which was found to be more effective than phthaloyl chloride. The polymer was characterized with a dilute solution viscometer, a vapor phase osmometer and a gel permeation chromatography apparatus. Findings are as follows:
Melting range 135 - 140°C
Intrinsic viscosity [η] 0.0485 dl/g
Number average molecular weight, Mn2440 (VPO)
3080 (CPC)
Weight average molecular weight, Mw12800 (GPC)
The chemical structure of the polymer and the cured fiber were analyzed and compared through their infrared absorption spectra. The differential thermal analyzer (DTA) and the differential scanning calorimeter (DSC) were also applied to the fiber to measure thermal behavior.
Results of these measurements indicated that o-chlorophenolic fiber was indeed more thermally stable than the commercial fiber, Kynol which is generally considered as one of the best fire—resistant fibers presently available on the market.
Oxygen indices measured for Kynol is 34 and 40 for chlorophenolic fiber.
The average tensile strength was tested by thermomechanical analyzer and found to be 35 x 103psi, about 20 % higher than that of Kynol.
Recommended Citation
Shahidi, Seyed Jafar, "O-chlorophenol-formaldehyde fiber" (1982). Theses. 3664.
https://digitalcommons.njit.edu/theses/3664
