IR spectroscopy approach for the study of interactions between an oxidized aluminium surface and a poly(propylene‐g‐acrylic acid) film

Abstract

SYNOPSISIn this paper, we report the study of the interactions between a poly (propylene-g-acrylic acid) and an oxidized aluminium surface by IR spectroscopy. A deposit of a pure poly (acrylic acid) on the same surface is used as a model. Under free acid form (COOH) we demonstrate the formation of hydrogen bondings between the acrylic carboxyl groups and OH functions located at the surface of alumina. This is characterized by an IR absorption [ uCc=o,] at 1733 or 1743 cm-' when we observe the metal surface either after peeling of a PPg(0H) film initially pressed on it or after a deposit of PAA (OH). Under the carboxylate form ( C O O -) , we observe two modes of interaction, the one purely ionic between COO-and A13+ with an absorption located near 1550 cm-' and the other of complex form between COO-and A13+ giving a band near 1610 cm-'. The water molecules can play a major part, in particular in the first case (COOH) where they destroy hydrogen bondings in favor of the formation of -COO-groups, interacting with the metal surface according to ionic or complex modes as above. 0 1993 John Wiley & Sons, Inc.

Synthesis and characterization of BTDA‐based dimethacrylate dental adhesive monomer and its interaction with Ca2+ ions

“…Appearance and enhancement of COO Ϫ stretching bands of carboxylates observed in the regions 1500 to 1650 cm Ϫ1 for asymmetric stretch [ a (COO Ϫ )] and 1390 to 1420 cm Ϫ1 for symmetric stretch [ s (COO Ϫ )] are indicative of an acid-base interaction. [13][14][15]21,22 So the peak at 1570 cm Ϫ1 in Figure 4 can be assigned to a (COO Ϫ ), corresponding to carboxylate complexes of carboxylic acid groups of BTDMA and ions of the minerals. The peak at 1404 cm Ϫ1 is attributed to s (COO Ϫ ) of the carboxylate, and confirms the interaction of BTDMA with the minerals.…”

“…8 -11 The adduct of HEMA and BTDA (3,3Ј, 4,4Ј-Benzophenone tetracarboxylic acid dianhydride) has been used, in some cases, in the composition of dental bonding systems, and it has been claimed that carboxylic acid groups of the monomer can interact with the Ca 2ϩ ions of tooth minerals, 12 but there are no details on the characterization of product and its interaction with Ca 2ϩ ions. Many studies have been done on the interaction of carboxylic acid groups of poly(acrylic acid) with metal ions [13][14][15][16] and hydroxyapatite, 17,18 but we have not found many studies on the interaction of adhesive monomers containing carboxylic acid groups with such minerals.…”

Nanoparticle and poly(methyl methacrylate) co-dispersion in anisole

“…Fatty acid is believed to adsorb on oxide particle surface through -OH site interaction with carboxylic acid functional groups [31,[36][37][38][39][40][41]. For TiO 2 , the carboxylic functional groups from the nonanoic acid adsorb in a dissociative process with the two oxygen atoms bonding to the surface Ti 4?…”

A Review on Adhesively Bonded Aluminium Joints in the Automotive Industry

“…Adhesive can bond to the substrates in a different manner as well. It was shown by different studies [90][91][92][93][94][95][96], that when a carboxylic acid is in contact with a metal oxide substrate, a carboxylate bond is formed (COO -). This bonds forming an ion with the substrate.…”