Chemical modification of poly(ethylene‐co‐methyl acrylate‐co‐maleic anhydride) for cathodic electrodepositions

Abstract

This study is concerned with the development of new polymers that could be deposited via cathodic electrocoating methods on metal surfaces. The synthetic strategy is based on the incorporation of cationic functionalities into commercial polymers. Polyalkyl acrylic or methacrylic ester copolymers were reacted with primary or secondary amines and aminoalkanols or their mixtures. Depending on the proportion of the acrylic or methacrylic ester in the starting material and the extent of the chemical modification, the resulting amide functionalized polymers are soluble or dispersible in water and could be used as aqueous dispersions for cathodic electrodepositions. Hindered amine catalysts, such as diazabicyclo[2.2.2]octane, accelerate the chemical transformation leading to higher level of functionalization. Among different amines screened, mixtures of oleylamine and ethanolamine proved to produce the best results. A poly(ethylene‐co‐methyl acrylate‐co‐maleic anhydride) [poly(E‐co‐MA‐co‐MAH)] was aminolyzed in solution with a mixture of 50/50 (mol % ratio) of oleylamine/ethanolamine and used to generate aqueous dispersions via phase inversion from methyl isobutyl ketone solutions. These dispersions exhibit particle sizes in the submicron range and zeta potential values indicating a good stability. They could be electrodeposited to give films of high elasticity according to the nanomechanical tests. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012

Transforming colloidal Cs4PbBr6 nanocrystals with poly(maleic anhydride-alt-1-octadecene) into stable CsPbBr3 perovskite emitters through intermediate heterostructures

“…Neutral oleylamine is a nucleophile with a documented reactivity towards linear and cyclic anhydrides, 37,38 and polymaleic anhydride derivatives. 39,40 The reaction between neutral oleylamine and PMAO in the absence of NCs causes broadening of the vinyl hydrogen resonance of the oleyl chain in the 1 H NMR spectrum due to the attachment of small oleylamine molecules to PMAO macromolecules (the specied M w of PMAO is $30 000-50 000 g mol À1 , which roughly corresponds to $80-150 succinic anhydride-octadecene subunits) ( Fig. S20-S22 †).…”

Transforming Colloidal Cs4PbBr6 Nanocrystals by Poly(maleic anhydride-alt-1-octadecene) into Stable CsPbBr3 Perovskite Emitters Through Intermediate Heterostructures

“…Neutral oleylamine is a nucleophile with a documented reactivity towards linear and cyclic anhydrides, 30,31 and polymaleic anhydride derivatives. 32,33 The reaction between neutral oleylamine and PMAO in the absence of NCs causes broadening of the vinyl hydrogens resonance of oleyl chain in 1 H NMR spectrum due to the attachment of small oleylamine molecules to the PMAO macromolecules (the specified Mw of PMAO is ~30,000-50,000 g/mol, which roughly corresponds to ~80-150 succinic anhydride-octadecene subunits) (Figures S19-S21). The addition of neutral oleylamine to cyclic anhydride produces a succinamic acid derivative, as was confirmed by 1 H and 1 H- 13 C HSQC NMR in a control reaction (Figures S22).…”

Structural and mechanical characteristics of polymersomes

“…94,101 Future perspectives of vesicles include creating smart nanocontainers combining the diverse features of lipids, polymers, and other derivatives. [102][103][104][105] As the complexity of the membrane-enclosed compartments rises, the use of mesoscale simulations is essential for in-depth microscopic observation of the numerous polymersome phenomena. For example, DPD can provide useful guidelines with regard to the design of the architecture of macromolecular amphiphiles, which form polymersomes with desired mesoscopic properties and behaviors.…”