Polymer Degradation and Stability
The combination of a difunctional alkylating agent, either hydroxymethylbenzyl chloride or α,α′-dichloroxylene with polystyrene or high-impact polystyrene together with a Friedel-Crafts catalyst, 2-ethylhexyldiphenylphosphate, and an amine to react with hydrogen chloride has been studied by X-ray photoelectron spectroscopy. The results confirm what had been suggested from previous investigations using thermogravimetric analysis; cross-linking of the polymer occurs as the temperature is raised and the alcohol-containing alkylating agent gives a greater amount of cross-linking than does the dichloro compound.
Wang, Jiangqi; Du, Jianxin; Yao, Hongyang; and Wilkie, Charles A., "XPS Characterization of Friedel-Crafts Cross-Linked Polystyrene" (2001). Chemistry Faculty Research and Publications. 158.
ADA accessible version
Accepted version. Polymer Degradation and Stability, Vol. 74, No. 2 (2001): 321-326. DOI. © 2001 Elsevier B.V. Used with permission.