Poly(maleic anhydride) — synthesis and proof of structure

Abstract

Rapid CommunicationPoly(ma1eic anhydride) -Synthesis and Proof of S t r u c t u r e a )

Peroxide initiated maleic anhydride grafting: Structural studies on an ester-containing copolymer and related substrates

“…As seen in Figure 6, the spectra of both SResd and VLResd exhibit peaks in the region 2.5-3.5 ppm, which are absent in the neat model ester. The above observations are consistent with the grafting of the SAn residues 5,6,13 at various positions along the ester main chain as single units. The spectrum of oligomeric poly-(MAn) 6,16 exhibits peaks centered at ϳ 4.5.…”

“…The above observations are consistent with the grafting of the SAn residues 5,6,13 at various positions along the ester main chain as single units. The spectrum of oligomeric poly-(MAn) 6,16 exhibits peaks centered at ϳ 4.5. This further supports the argument that the SAn residues are grafted as single units.…”

“…Interest in the grafting of reactive functional group-containing monomers onto preformed polymers in recent years has been caused by their current and potential application as compatibilizing agents in polymer blends, as adhesion promoters and as processing aids for recycling of plastics waste. [1][2][3][4] Maleic anhydride (MAn) is a popular monomer in grafting reactions because the monomer itself does not homopolymerize 5,6 under the reaction conditions used in grafting reactions. Further, the succinic anhydride (SAn) residues grafted can be used to generate numerous derivatives such as half-esters, diesters, succinamic acids, succinamides, succinimides, and succinic acid salts.…”

Functionalization of polyesters with maleic anhydride by reactive extrusion

“…29,30 The spectra of poly(MAn) showed the broad group of resonances (4 -5 ppm) centered at 4.5 ppm, and a weak signal was detected below 3.5 ppm. 31,32 This supports the evidence that succinic anhydride rings are individually attached to the polymer chains. On the other hand, the grafted polymer containing more than one succinic anhydride unit is either absent or if present is in negligible amount.…”

Preparation and Characterization of Al2O3–TiO2Composite Oxide Nanocrystals

“…The result tentatively indicates that these composite nanomaterials have an excellent catalysis effect on the polymerization of maleic anhydride. Traditionally, the polymerization of maleic anhydride has been initiated by using benzoyl peroxide (BPO) or pyridine as an initiating agent (18)(19)(20). The polymerization products thus prepared have rings at the end groups.…”