Comparison of optical properties and mechanical/electrical degradation of some low density polyethylene-and polypropylene-based polymer blends

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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Microstructural Contributions of Different Polyolefins to the Deformation Mechanisms of Their Binary Blends

Polymers ◽

10.3390/polym12051171 ◽

2020 ◽

Vol 12 (5) ◽

pp. 1171 ◽

Cited By ~ 3

Author(s):

Astrid Van Belle ◽

Ruben Demets ◽

Nicolas Mys ◽

Karen Van Kets ◽

Jo Dewulf ◽

...

Keyword(s):

Polymer Blends ◽

Tensile Deformation ◽

Deformation Mechanisms ◽

Low Density Polyethylene ◽

Low Density ◽

Mechanical Recycling ◽

Immiscible Polymer Blends ◽

Binary Blends ◽

Brittle Behavior ◽

Clear Cut

The mixing of polymers, even structurally similar polyolefins, inevitably leads to blend systems with a phase-separated morphology. Fundamentally understanding the changes in mechanical properties and occurring deformation mechanisms of these immiscible polymer blends, is important with respect to potential mechanical recycling. This work focuses on the behavior of binary blends of linear low-density polyethylene (LLDPE), low-density polyethylene (LDPE), high-density polyethylene (HDPE), and polypropylene (PP) under tensile deformation and their related changes in crystallinity and morphology. All of these polymers plastically deform by shear yielding. When unmixed, the high crystalline polyolefins HDPE and PP both exhibit a progressive necking phenomenon. LDPE initiates a local neck before material failure, while LLDPE is characterized by a uniform deformation as well as clear strain hardening. LLDPE/LDPE and LLDPE/PP combinations both exhibit a clear-cut matrix switchover. Polymer blends LLDPE/LDPE, LDPE/HDPE, and LDPE/PP show transition forms with features of composing materials. Combining PP in an HDPE matrix causes a radical switch to brittle behavior.

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Investigation of the biodegradation of low-density polyethylene-starch Bi-polymer blends

Results in Engineering ◽

10.1016/j.rineng.2019.100090 ◽

2020 ◽

Vol 5 ◽

pp. 100090 ◽

Cited By ~ 1

Author(s):

A.A. Abioye ◽

C.C. Obuekwe

Keyword(s):

Polymer Blends ◽

Low Density Polyethylene ◽

Low Density

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Degradation of polymer blends—II. Oxidative radiolysis and stabilization of blends of low-density polyethylene and styrene-butadiene-styrene copolymers

European Polymer Journal ◽

10.1016/0014-3057(85)90189-2 ◽

1985 ◽

Vol 21 (4) ◽

pp. 343-347 ◽

Cited By ~ 7

Author(s):

C. David ◽

F. Zabeau

Keyword(s):

Polymer Blends ◽

Low Density Polyethylene ◽

Low Density ◽

Styrene Copolymers ◽

Styrene Butadiene Styrene ◽

Styrene Butadiene ◽

Butadiene Styrene

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The Temperature Dependence of the Interphase Characteristics of Carbon-Black-Filled Polymer Blends of SKD-35 cis-Butadiene Rubber and Low-Density Polyethylene

International Polymer Science and Technology ◽

10.1177/0307174x1404101011 ◽

2014 ◽

Vol 41 (10) ◽

pp. 55-58

Author(s):

L.V. Baragunova ◽

T.A. Gubzhev ◽

A.Z. Kashezhev ◽

R.B. Tkhakakhov ◽

B.S. Karamurzov

Keyword(s):

Carbon Black ◽

Polymer Blends ◽

Temperature Dependence ◽

Low Density Polyethylene ◽

Low Density ◽

Butadiene Rubber ◽

Large Drop ◽

Drop Method ◽

Interphase Tension ◽

Large Drop Method

The large drop method was used to investigate the interphase tension of polymer blends of synthetic SKD-35 -butadiene rubber and low-density polyethylene filled with nanosized carbon black DG-100 particles at the boundary with glycerin and air in the temperature range 20–120°C.

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