Graft copolymerization of maleic anhydride onto low‐molecular‐weight polyisobutylene through solvothermal method

Abstract

The free‐radical graft copolymerization of maleic anhydride (MAH) onto highly reactive low molecular weight polyisobutylene was conducted by the use of benzoyl peroxide as an initiator through the solvothermal method. Fourier transform infrared spectra and 1H‐NMR spectra confirmed that maleic anhydride was successfully grafted onto highly reactive low molecular weight polyisobutylene backbone, and the grafting mechanism also was proposed. The effect of benzoyl peroxide content, MAH concentration, total reactant amount in the reaction vessels, reaction temperature and time, and different kinds and volumes of solvents on MAH's degree of grafting was investigated in detail. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009

Antioxidant and dissociation behavior of polypropylene‐graft‐maleic anhydride

“…As reported in previous work, 23–25 extrusion of PP‐ g ‐MA typically results in partial hydrolysis due to ambient humidity and high heat, resulting in PP‐ g ‐SA (Figure 1).…”

“…As a widely available commercial product, PP‐ g ‐MA has been used previously in the development of functional polymers as an intermediate to bind other antioxidant compounds such as green tea extract, 20 catechin, 21 and thymol essential oil 22 . However, it has also been reported that MA often undergoes partial hydrolysis during extrusion to form polypropylene‐ graft ‐succinic acid (PP‐ g ‐SA) 23–25 . PP‐ g ‐SA has a similar structure to other dicarboxylic acid compounds with antioxidant functionality such as ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid (NTA), and iminodiacetic acid (IDA), but, to the best of the authors' knowledge, neither the dissociation behavior nor the radical scavenging capacity of PP‐ g ‐SA has been investigated.…”

“…22 However, it has also been reported that MA often undergoes partial hydrolysis during extrusion to form polypropylene-graft-succinic acid (PP-g-SA). [23][24][25] PP-g-SA has a similar structure to other dicarboxylic acid compounds with antioxidant functionality such as ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid (NTA), and iminodiacetic acid (IDA), but, to the best of the authors' knowledge, neither the dissociation behavior nor the radical scavenging capacity of PP-g-SA has been investigated.…”

Surface modification of UHMWPE fibers by means of polyethylene wax grafted maleic anhydride treatment

“…PEW‐ g ‐MAH was synthesized through solution approach with MAH as grafted monomer and BPO as an initiator, the schematic diagram of PEW‐ g ‐MAH is shown in Figure . First, PEW, MAH, and BPO were put into the three neck flask (250 mL) and dissolved in xylene after heating and stirring.…”

Preparation and properties of polystyrene–γ‐methacryloxypropyl trimethoxy silane copolymer/zirconia nanohybrid materials

“…The solvothermal method is a general method for fabricating crystalline nanoparticles in the inorganic chemistry field, and the reaction temperature is often set to lower than 200°C; this also fits the reaction for polymers. Because of the increased solubility and reactivity of the compounds and complexes under high temperatures and pressures, the solvothermal method can be used to synthesize copolymers that are difficult to obtain by traditional methods . The organic functional groups under these circumstances are more reactive, and the polymerization process is easier to facilitate and more effective.…”