Studies in interchain crosslinking and heat shrinkability of polymer blends consisting of grafted low-density polyethylene and ethylene-acrylic rubber

2003 ◽  
Vol 24 (1) ◽  
pp. 83-93 ◽  
Author(s):  
J. K. Mishra ◽  
C. K. Das
Keyword(s):  
Polymer Blends ◽  
Low Density Polyethylene ◽  
Low Density

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

Polymers ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1171 ◽  
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.

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

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.

Miscibility in crystalline polymer blends: Isotactic polypropylene and linear low-density polyethylene

2003 ◽  
Vol 90 (12) ◽  
pp. 3338-3346 ◽  
Author(s):  
Giuliana Gorrasi ◽  
Rachele Pucciariello ◽  
Vincenzo Villani ◽  
Vittoria Vittoria ◽  
Sandra Belviso
Keyword(s):  
Polymer Blends ◽  
Isotactic Polypropylene ◽  
Crystalline Polymer ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene

Long-Term Strength of Polymer Blends from Recycled Materials

2013 ◽  
Vol 43 (3) ◽  
pp. 59-66
Author(s):  
R. K. Krastev ◽  
S. Djoumaliisky ◽  
I. Borovanska
Keyword(s):  
Brittle Fracture ◽  
Polymer Blends ◽  
Calculation Method ◽  
High Density Polyethylene ◽  
Tensile Creep ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Term Strength ◽  
Short Term

Abstract This report presents data on the long-term strength of five composites made of plastic waste. They contain low density polyethylene, high density polyethylene, polypropylene and polystyrene (LDPE, HDPE, PP and PS). Long-term strength is determined experimentally by tensile creep to fracture. The experimentally determined long-term strength is compared to predictions for its probabilistic boundaries. The calculation method of these predictions uses data from short-term experiments. The calculated predictions are true for four compositions which exhibit ductile fracture. The composite containing 50 wt.% PS has the greatest strength (of the tested specimens) and has brittle fracture. Its calculated estimate of long-term strength is not consistent with the experimental one.

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