Surface graft copolymerization of 2-hydroxyethyl methacrylate onto low-density polyethylene film through corona discharge in air

2001 ◽  
Vol 81 (12) ◽  
pp. 2881-2887 ◽  
Author(s):  
Jingxin Lei ◽  
Xia Liao
Keyword(s):  
Corona Discharge ◽  
Graft Copolymerization ◽  
Polyethylene Film ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Hydroxyethyl Methacrylate ◽  
Surface Graft

New LDPE Copolymeric Films with Enhanced Hydrophilic Properties Prepared by Gamma Irradiation

2006 ◽  
Vol 514-516 ◽  
pp. 1034-1038 ◽  
Author(s):  
Luís M. Ferreira ◽  
António N. Falcão ◽  
M. Helena Gil
Keyword(s):  
Thermal Analysis ◽  
Graft Copolymerization ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Hydroxyethyl Methacrylate ◽  
Good Thermal Stability ◽  
Analysis Techniques ◽  
Average Ratio ◽  
Polymeric Substrates ◽  
Thermal Analysis Techniques

Graft copolymerization induced by gamma radiation has being used as a tool to modify the surface properties of a range of polymeric substrates. This work describes the use of this technique for the grafting of 2-hydroxyethyl methacrylate (HEMA) branches onto low-density polyethylene (LDPE) surface, in order to improve its hydrophilic properties. Sample preparation protocols were selected from previous work in order to obtain films with high grafting yields. The obtained PE-g-HEMA films were characterized by thermal analysis techniques (DSC and TGA), and by Fourier transform infrared spectroscopy (FTIR). The results obtained show that, upon irradiation, there is some loss of cristalinity of the copolymer backbone, but also that the samples keep a good thermal stability. The water uptake of the samples was evaluated. Hydration levels up to near 95 % with a ydration/dehydration average ratio of 1:5 were obtained.

scholarly journals The changes of LD-PE films after exposure in different media

2020 ◽  
Vol 26 (4) ◽  
pp. 185-189
Author(s):  
Tatiana Kojnoková ◽  
Lenka Markovičová ◽  
František Nový
Keyword(s):  
Water Absorption ◽  
Melting Temperature ◽  
Aggressive Medium ◽  
Polyethylene Film ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Experimental Part ◽  
Effective Application ◽  
Suitable Medium ◽  
Selection Of

AbstractThis work deals with the study of polymers, and, in particular, polyethylene; its production, types, properties, and usage. The experimental part evaluates the changes of properties of the polyethylene film to be reused under various exposure conditions and selection of the most suitable medium for its application. The film made of low-density polyethylene (LD-PE) was influenced by aggressive media with different pH, specifically Savo for the disinfection, Savo as a Saponate for dish washing and Coca-Cola. On LD-PE films the water absorption and melting temperature evaluation tests were performed. Carried out tests show that the most aggressive medium for LD-PE film from used media is Coca-Cola. The most effective application of LD-PE film like wrapping on container transported is the Savo used as a Saponate for dish washing.

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