Air Plasma-Activated Crosslinking of Low-Density Polyethylene During Melt Mixing

Cui, Yang-feng; Ma, Zhe; Ma, Guiqiu; Sheng, Jing

doi:10.1007/s12209-019-00197-9

Cited by 1 publication

(4 citation statements)

References 37 publications

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“…The same observation can be made by assessing the lg G ″ versus lg ω plots. The slope of G ″ in the low ω region decreases with increased recycled material content, suggesting a more extended relaxation mechanism attributed to the presence of the crosslinks due to the mechanical recycling process 44 …”

Section: Resultsmentioning

confidence: 96%

“…A slight upturn can be seen in the plots at high η ′ as the amount of recycled material increases in the blends. The rise in deviation amplitude of the upturn at high viscosity is associated with increased crosslinking degrees 44 …”

Section: Resultsmentioning

confidence: 98%

“…The slope of G 00 in the low ω region decreases with increased recycled material content, suggesting a more extended relaxation mechanism attributed to the presence of the crosslinks due to the mechanical recycling process. 44 Another rheological method for determining the presence of crosslinks in a given blend is determining the gel point of the blend. By simultaneously plotting the G 0 and G 00 of the blends as a function of frequency, the point at which the two plots intersect is commonly known as the gel point.…”

Section: Rheological Propertiesmentioning

confidence: 99%

“…The rise in deviation amplitude of the upturn at high viscosity is associated with increased crosslinking degrees. 44 Other means are often utilized to approve further the conclusions drawn from the Cole-Cole plots. Han and Van Gurp-Palman plots are two of these means.…”

Section: Rheological Propertiesmentioning

confidence: 99%

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Correlation of structure, rheological, thermal, mechanical, and optical properties in Low Density Polyethylene/Linear Low Density Polyethylene blends in the presence of recycled Low Density Polyethylene and Linear Low Density Polyethylene

Esmaeilzade,

Stainslavovich,

Jandaghian

et al. 2024

Polymer Engineering & Sci

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Post‐industrial low‐density and linear low‐density polyethylene blown films are mechanically recycled for reutilizing in the production of blown films for packaging applications. This process enables the production of films with lower cost and similar properties while preserving the environment and lowering the amount of waste material disposed of. The mechanical recycling process results in the production of recycled pellets. This process includes chopping, washing, drying, and reprocessing. Mixtures of these recycled materials and their virgin form with various concentrations are shaped into blown films with inherent 70 and 30 wt% loadings for low‐density polyethylene and linear low‐density polyethylene components, respectively. Fourier transform infrared spectroscopy results of the recycled material show no contamination or chemical reaction with other materials. Gel permeation chromatography is carried out on the virgin and recycled low‐density polyethylene and linear low‐density polyethylene, and the results indicate the occurrence of chain session and crosslinking during the recycling process. The decline in the thermal properties of the samples, seen from the differential scanning calorimetry results, indicates the presence of crosslinks. The effect of structural changes caused by the recycling process on the rheological properties is studied. The miscibility of the blend components is evaluated by Cole–Cole plots and then further proved by Han and Van Gurp–Palman curves. Mechanical properties display an upturn following the presence of the crosslinkes. A decline in the optical properties in the films caused by the refraction of light by the crosslink structure in the film bulk and on the surface is evident.Highlights LDPE and LLDPE were recycled according to the circular economy approach Blown films containing virgin and recycled LDPE and LLDPE were produced Chain scission and crosslinking as a result of recycling were studied Rheological, thermal, mechanical, and optical properties were studied

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Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 98%

Section: Rheological Propertiesmentioning

confidence: 99%

Section: Rheological Propertiesmentioning

confidence: 99%

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