Maleic anhydride grafted rubbers for metallic surfaces lamination

Abstract

Modification of two synthetic rubbers, namely polybutadiene (BR) and bromobutyl (BIIR), were carried out to enhance their adhesion performance and their lining to steel to protect it against corrosion. Two different feasible and industrially applicable techniques were used for grafting the two rubbers under investigation individually with maleic anhydride (MAH), namely the reactive extrusion and the mechanochemical techniques. The modified rubbers were characterized by FTIR-spectroscopy, chemical analysis, elemental analysis, and by measuring the surface wetting tension. These applied techniques improved the adhesion performance of the rubber towards steel surface markedly. Grafting of BR with MAH via mechanochemical technique increased the adhesion strength of BR by four to five times, whereas grafting of BIIR with MAH via reactive extrusion techniques increased the adhesion strength of the parent BIIR up to more than five times.

Mechanochemistry: the varied applications of mechanical bond-breaking

“…Such polymerization started from the macroradical centers. 115 Similarly, block and graft polymers were obtained by milling of PAN with vinyl chloride or 1,3-butadiene, 116 of poly(methyl methacrylate) PMMA with vinyl chloride, 117 of poly(ethylene terephthalate) PET with acrylic acid, 118 or of polybutadiene rubber with maleic anhydride, 119 to name a few. It is, of course, also possible to generate block polymers by co-milling of different homopolymers such as PVC and PMMA, 120 because macroradicals are able to combine.…”

Effect of maleic anhydride on the damping property of magnetorheological elastomers

“…The fabrication of the MREs consists of mixing, pre-forming configuration and curing. Firstly, using the method of mechanochemical techniques [19], 100 phr rubber and MA were mixed using a two-roll mill (Taihu Rubber Machinery Inc. China, Model XK-160) to obtain a modified BR. Then iron particles with a weight fraction of 60%, 100 phr plasticizer and 14 phr of other additives were put into the mixture and to form a gross rubber.…”

Carboxylic Acid-Functionalized Butyl Rubber: Synthesis, Characterization, and Physical Properties

“…There are several examples involving the functionalization of the PIB terminus with carboxylic acid moieties, , as well as the polymerization of t -butyl acrylate and t -butyl methacrylate from atom transfer radical polymerization (ATRP) initiation sites at the terminus or in the middle of the PIB chain, followed by acidic or thermal deprotection to provide carboxylic acid moieties. ,,, Conetworks have been formed by the polymerization of ethoxyethyl-protected methyl methacrylate with methacrylate-terminated PIB, followed by acidic deprotection . There are also examples involving the introduction of pendant carboxylic acids along the backbone of butyl rubber via the grafting of maleic anhydride, followed by the anhydride ring-opening with amines or alcohols. − However, there are still relatively few studies concerning the effects of these carboxylic acid moieties on the properties of these modified materials. ,,, …”

“…41−44 However, there are still relatively few studies concerning the effects of these carboxylic acid moieties on the properties of these modified materials. 42,43,45,46 We have recently reported a simple and highly efficient epoxidation/elimination sequence to provide access to butyl rubber derivatives having allylic alcohol moieties along the polymer backbone. 20,20,21 and reacted with alcohol and amine functionalized poly-(ethylene oxide) (PEO) to provide butyl rubber-PEO graft copolymers.…”