Influence of shearing history on the rheological properties and processability of branched polymers. II. Optical properties of low-density polyethylene blown films

Low-Density Polyethylene (LDPE) films doped with Eu (TTA)3phen complex (TTA=2-thenoyltrifluoroacetone, phen=1,10-phenanthroline) were fabricated by hot-blowing technique for thickness of 100 μm. The films were doped with 0.1 % of Eu (TTA)3phen to the total weight of LDPE and exposed to UV irradiation from deuterium lamp for 5, 10, 20, 40 and 60 hours to investigate the effect of its optical properties. The films were characterized by Spectrofluorometer, UV/VIS Spectrophotometer and FT-IR Spectrometer to measure their emission spectra, lifetimes, transmission transparency and chemical bonding. Photoluminescence of the room-temperature Eu (TTA)3phen doped films consist of typical Eu3+emission transition lines with hypersensitive5D07F2emission band at 610 nm. After 20 hours UV treatment, the peak intensity dropped by 90 % and shortened the luminescent lifetimes from 0.654 ms to 0.305 ms. Longer UV treatment also has accelerated degradation in doped LDPE films shown by significant reducing in absorption peak of FTIR at 3395, 3186 and 1645 cm-1. The results would provide a mechanism to improve the lifetime of the LDPE by utilizing the light-manipulation property of Eu (TTA)3phen complex to absorb UV spectrum and covert into red emission.Keywords: LDPE, rare-earth complex, photoluminescence

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Correlations between processing parameters, morphology, and properties of blown films of linear low-density polyethylene/low-density polyethylene blends. I. Crystalline biaxial orientation by IR and mechanical properties

Journal of Applied Polymer Science ◽

10.1002/app.23358 ◽

2006 ◽

Vol 101 (5) ◽

pp. 3161-3167 ◽

Cited By ~ 7

Author(s):

M. C. Branciforti ◽

R. Pimentel ◽

A. Bernardi ◽

R. E. S. Bretas

Keyword(s):

Mechanical Properties ◽

Processing Parameters ◽

Low Density Polyethylene ◽

Low Density ◽

Linear Low Density Polyethylene ◽

Blown Films ◽

Polyethylene Blends

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Phase Structure Characterization and Processing-Structure-Property Relationships in Linear Low-Density Polyethylene Blown Films

Metallocene Technology in Commercial Applications ◽

10.1016/b978-188420776-1.50016-8 ◽

1999 ◽

pp. 111-119 ◽

Cited By ~ 1

Author(s):

Jianjun Lu ◽

Baiyi Zhao ◽

Hung-Jue Sue

Keyword(s):

Phase Structure ◽

Structure Characterization ◽

Low Density Polyethylene ◽

Low Density ◽

Linear Low Density Polyethylene ◽

Structure Property ◽

Blown Films ◽

Structure Property Relationships

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Blown Films from Linear Low Density Polyethylene Incorporating Biodegradable Additive

Polymers and Polymer Composites ◽

10.1177/096739110301100208 ◽

2003 ◽

Vol 11 (2) ◽

pp. 141-144

Author(s):

Vivek Kale ◽

Kalpesh Jani ◽

Satish Awate ◽

R Rangaprasad ◽

Yatish Vasudeo

Keyword(s):

Low Density Polyethylene ◽

Second Step ◽

Environmental Concerns ◽

Natural Soil ◽

Low Density ◽

Linear Low Density Polyethylene ◽

Blown Films ◽

Polymer Resin ◽

Innovative Materials ◽

Different Levels

Environmental concerns are now driving additive suppliers and polymer resin manufacturers to step up efforts to create innovative materials for the future. In the present work, a “biodegradable” additive/promoter was incorporated into a butene-based linear low density polyethylene (LLDPE) at different levels. The properties of the blown films derived therefrom were investigated. In the first step the “degradation additive/promoter” was converted into a 50% masterbatch in LLDPE. In the second step, this concentrate was let down at 5, 10, 15 and 20% level in a butene-based film grade LLDPE. The properties of the films were characterized. In the third step, the films were subjected to “real-time” degradation tests; using natural soil and under vermicompost conditions. Films subjected to degradation under vermicompost conditions have shown encouraging results. After 3 months, the films containing 15 and 20% additive were found to have disintegrated to a practically unusable form.

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