A Facile Method for Grafting Polymerisation of Acrylonitrile onto LDPE Film with High Grafting Efficiency

Abstract

Summary: A facile and effective surface grafting polymerisation method was designed and investigated to graft acrylonitrile (AN) onto low‐density polyethylene (LDPE) film using benzoyl peroxide (BPO) as an initiator. This method consisted of two steps. In the first step, BPO was adsorbed on the surface of LDPE film by immersing LDPE film in BPO solution; in the second step, grafting polymerisation of AN onto LDPE film was carried out under heat. Because the grafting polymerisation was carried out with AN in vapour phase and the concentration of AN was very low, the homopolymerisation of AN could be effectively suppressed and therefore the grafting efficiency was very high (approaching 100%). Grafting percent (Gp) could be controlled from 0 to 118% by adjusting reaction conditions in the first step and/or in the second step respectively. A possible model was proposed to interpret the experimental results.

Compositional Gradients in Siloxane Copolymers by Photocontrolled Surface Segregation

“…In order to impart specific properties to a polymer surface, chemical or physical functionalization processes, , specifically designed to modify the material surface properties without substantially changing its bulk features, are generally used. Proposed techniques for surface modification include plasma treatment, surface grafting, and surface coating . Currently, polymers with different surface and bulk properties are typically obtained by multiple step processes, which require additional production time, are not well controlled, and/or deleteriously affect the final material properties, limiting the scope of application.…”

RETRACTED: Functional polymers synthesized by grafting of glycidyl methacrylate onto swift heavy ions irradiated BOPP films using chemical initiator

“…However, there are still some limitations in the conventional grafting methods: radiations like gamma (c) rays can damage the polymer structures over long-time exposures; plasma grafting is expensive, slow and has found only limited applications. The use of chemical initiators in chemical grafting has resulted in the production of homo-polymers which not only waste expensive starting materials but also make processing more laborious [2].…”

Functionalization of industrial polypropylene films via the swift‐heavy‐ion‐induced grafting of glycidyl methacrylate

“…However, there are still some limitations in the conventional grafting methods: plasma grafting is slow and expensive and has found only limited applications, γ rays can damage polymer structures over long‐time exposures, UV light is harmful to human health, and the use of chemical initiators has resulted in the production of significant amounts of homopolymers. The undesired homopolymers not only waste expensive starting materials but also make processing more laborious 6…”