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AuthorAl-Gunaid, Taghreed Abdulhameed
AuthorPopelka, Dr.Anton
AuthorKrupa, Dr.Igor
Available date2021-10-18T06:52:17Z
Publication Date2021
Publication NameQatar University Annual Research Forum and Exhibition (QUARFE 2021)
CitationAl-Gunaid T. A., Popelka A., Krupa I., "Enhancement of Adhesion Characteristics of Low-density Polyethylene Using Atmospheric Plasma Initiated-Grafting of Polyethylene Glycol", Qatar University Annual Research Forum and Exhibition (QUARFE 2021), Doha, 20 October 2021, https://doi.org/10.29117/quarfe.2021.0056
URIhttps://doi.org/10.29117/quarfe.2021.0056
URIhttp://hdl.handle.net/10576/24323
AbstractThe low-density polyethylene/aluminum (LDPE/Al) joint in Tetra Pak food container provides stability and strength to food packaging, ensures protection against outside moisture, and maintains the nutritional values and flavors of food without the need for additives in the food products. However, it was found that the adhesion strength of LDPE with Al is weak or almost non-existent, due to the non-polar hydrophobic LDPE surface. Therefore, it was necessary to apply surface treatment to LDPE. Plasma-assisted grafting of the LDPE surface with different molecular weight compounds of polyethylene glycol (PEG) was used to improve LDPE/Al adhesion. It was found that this surface modification contributed to significantly improve the wettability of the LDPE surface, as was confirmed by contact angle measurements. The chemical composition changes after plasma treatment and modification process was observed by X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR). A surface morphology was analyzed by scanning electron microscopy (SEM) and atomic force microscopy (AFM). Adhesion characteristics of LDPE/Al adhesive joints were analyzed by the peel tests. The most significant adhesion improvement of the PEG modified LDPE surface was achieved using 10.0 wt.% aqueous (6000 M) PEG solution, while the peel resistance increased by approximately 54 times in comparison with untreated LDPE.
Languageen
PublisherQatar University Press
SubjectPolyethylene
Surface treatment
Corona discharge
Polyethylene glycol
Adhesion
TitleEnhancement of Adhesion Characteristics of Low-density Polyethylene Using Atmospheric Plasma Initiated-Grafting of Polyethylene Glycol
TypePoster
dc.accessType Open Access


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