Abstract

The adsorptions of polystyrene, poly(methoxystyrene), poly(acrylamide), and poly(acrylic acid) on aluminum oxide are investigated with inelastic electron tunneling spectroscopy. Comparison with infrared data for thin polymer films of the polymer samples gives insight into the adsorbed polymer configuration. Data indicate that poly(styrene) is weakly physisorbed to aluminum oxide, while poly(methoxystyrene), poly(acrylamide), and poly(acrylic acid) react to form strong bonds with the oxide surface. On the basis of this data, adsorption mechanisms are suggested for each of the polymers. Poly(acrylamide) adsorbs via a protonation of the amine group by the surface hydroxyl groups. Poly(4-methoxystyrene) forms a phenolate ion and can react further with the aluminum surface centers. Poly(acrylic acid) adsorbs to the oxide surface in a manner analogous to that of small organic acids such as the carboxylate ion.

Stretchable optical diffraction grating from poly(acrylic acid)/polyethylene oxide stereocomplex

Jinghan He, Andre Kovach, Yunxiang Wang, William Wang, Wei Wu, and Andrea M. Armani
Opt. Lett. 46(21) 5493-5496 (2021)

Strong visible-light emission in annealed poly(acrylic acid)

Abebe T. Tarekegne, Jakob Janting, and Haiyan Ou
Opt. Mater. Express 10(12) 3424-3434 (2020)

Raman spectroscopy for the characterization of the polymerization rate in an acrylamide-based photopolymer

Raghavendra Jallapuram, Izabela Naydenova, Hugh J. Byrne, Suzanne Martin, Robert Howard, and Vincent Toal
Appl. Opt. 47(2) 206-212 (2008)

Laser-induced photochemical synthesis of fibrous-shaped CuO@CuS nanoporous structures for enhanced electrostatic adsorption of negatively charged contaminants from wastewater

Tiejun Wang, Hua Zhang, Linlin Xu, Xuelin Wang, and Ming Chen
Opt. Mater. Express 7(11) 3863-3874 (2017)

Effect of the finishing oil of acrylic fibers in the optical rotation of the Raman scattered light

I. Rosales-Candelas, J. J. Soto-Bernal, R. Gonzalez-Mota, and C. Frausto-Reyes
Opt. Express 21(21) 25544-25552 (2013)