Monolayer Studies of Homopolymers and Copolymers of Methyl Acrylate and Acrylonitrile: Effect of Soluble Surfactants in the Subphase

✍ Scribed by VEENA VANGANI; ANIMESH KUMARRAKSHIT

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 107 KB
• Volume: 176
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1995.0021

✦ Synopsis

form a true monolayer (9). The replacement of the methyl A copolymer of acrylonitrile and methyl acrylate (ANMA 11 ) was group by different substituents affects the cohesive forces synthesized and subjected to monolayer studies. The monolayer between the main chains and thereby affects the state of the studies were done at the air-water interface. Water and aqueous monolayer. This is true for homopolymers. However, the solutions of sodium dodecyl sulfate (SDS) were used as the subpresence of substituents in each monomer unit of acrylic and phase and the compression isotherms were noted. Different conmethacrylic homopolymers creates difficulties in formation centrations of SDS in the subphase, leading to different surface of highly organized monolayers and Langmuir-Blodgett pressures, affected the p-A isotherms. Free energy of compression (LB) films (9). The LB films formed from polymers conwas computed from the p-A isotherms for different systems. The taining hydrophilic spacer groups in the main chain and values were also computed for homopolymers:poly(methyl acrylate) (PMA), polyacrylonitrile (PAN), and their physical mixture. fluorocarbon side chains exhibit best thermal stability. This

The results are analyzed and discussed.