Application of SIMS in polymers and lignocellulosic materials

Abstract

Secondary Ion Mass Spectrometry (SIMS), a new surface analysis technique, has begun to be applied to the studies of organic macromolecule surface either for chemical imaging and functional group analysis or for the determination of molecular weight distribution. The instrumental conditions that are critical for obtaining a meaningful spectrum are discussed for polymers which have properties similar to lignocellulosic materials, i.e., they are thermally fragile and electrically insulating. Examples are given for qualitative and quantitative analyses. Possible uses of SIMS for characterization of lignocellulosic materials are suggested. © 1993 John Wiley & Sons, Inc.

Characterisation of amino acid modified cellulose surfaces using ToF-SIMS and XPS

“…Fmoc produces a distinct secondary ion at 179 m/z using Tof-SIMS analysis (Enjalbal et al 1999). ToF-SIMS and XPS analysis of cellulosic materials has been previously reported (Hua et al 1993;Mitchell et al 2005;Fardim et al 2005). In the present study, the characteristic amino acid fragments were analysed to assess their distribution on the cellulose samples.…”

Mechanism of the immobilization of surfactants on polymeric surfaces by means of an argon plasma treatment: Influence of the chemical structure of surfactant and substrate

“…SSIMS is a surface specific technique that gives information ages of elements other than bromine before and after derivatization of polymeric samples with about the top 10-15 Å of a surface. 37,38 It is therefore more surface sensitive than XPS, which has Br 2 , this method may be suitable to monitor the amount of unsaturated bonds at a polymeric suran analysis depth of about 100 Å using the described experimental setup. Thus, it is expected face.…”

Synthesis and application of poly(ethylene‐co‐vinylalcohol‐graft‐acetylsalicylic acid) in drug delivery domain

“…This hydrogel swells in water or aqueous solution below the lower critical solution temperature (LCST) and shrinks above LCST. [1][2][3][4][5][6] This polymer is often used in drug delivery and medicine. Varshosaz et al 7 have studied the concentration of the cross-linking agent (glutaraldehyde) in PVA films and the percentage of the theophylline (drug) in the hydrogels.…”