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XPS studies of radiation grafted PTFE-g-polystyrene sulfonic acid membranes

Nasef, Mohamed Mahmoud and Saidi, Hamdani and Mohd Nor, Hussin and Yarmo, Mohd Ambar (2000) XPS studies of radiation grafted PTFE-g-polystyrene sulfonic acid membranes. Journal of Applied Polymer Science, 76 . pp. 336-349.

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Abstract

Structural investigations of PTFE-g-polystyrene sulfonic acid membranes prepared by radiation grafting of styrene onto PTFE were conducted by X-ray photoelectron spectroscopy (XPS). The analyzed materials included original PTFE film as a reference material, grafted film, and sulfonated membrane samples having various degrees of grafting. Interest is focused on C1s, F1s, O1s, and S2p of narrow XPS spectra as the basic elemental components of the membrane. The original PTFE film was found to undergo structural changes in terms of chemical composition and shifting in binding energy induced by incorporation of sulfonated polystyrene grafts, and the amount of such changes depends on the degree of grafting. The atomic ratio of F/C was found to decrease with the increase in the degree of grafting, while that for S/C and O/C were found to increase.

Item Type:Article
Uncontrolled Keywords:XPS studies; radiation grafted PTFE-g-polystyrene sulfonic acid membranes
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Natural Resources Engineering (Formerly known)
ID Code:3683
Deposited By: Miss Sharifah Rafidah Wan Alwi
Deposited On:19 Jun 2007 09:04
Last Modified:01 Jun 2010 03:11

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