Effects of reactive melt mixing on the morphology and thermal behavior of linear low-density polyethylene/rubber blends

2008 ◽  
Vol 109 (2) ◽  
pp. 1014-1021 ◽  
Author(s):  
Maurizio Penco ◽  
Stefania Della Sciucca ◽  
Elisa Passaglia ◽  
Guido Giordani ◽  
Serena Coiai ◽  
...  
Keyword(s):  
Thermal Behavior ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Melt Mixing ◽  
Rubber Blends ◽  
Reactive Melt

Synthesis, properties and thermal behavior of poly(decylene-2,5-furanoate): a biobased polyester from 2,5-furan dicarboxylic acid

RSC Advances ◽  
2015 ◽  
Vol 5 (91) ◽  
pp. 74592-74604 ◽  
Author(s):  
Vasilios Tsanaktsis ◽  
Dimitrios N. Bikiaris ◽  
Nathanael Guigo ◽  
Stylianos Exarhopoulos ◽  
Dimitrios G. Papageorgiou ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Melting Point ◽  
Thermal Behavior ◽  
Dicarboxylic Acid ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Synthesis Properties ◽  
Biobased Polyester

Poly(decylene-2,5-furandicarboxylate), a new bio-based polyester, was successfully synthesized from 2,5-furan dicarboxylic acid and 1,10-decanediol. It has mechanical properties and melting point similar to those of linear low density polyethylene.

Thermal Behavior, Mechanical Property and Microstructure of Low-Density Polyethylene Filled by Diatomite

2014 ◽  
Vol 633-634 ◽  
pp. 413-416
Author(s):  
Kun Yuan Wang ◽  
Qiu Ju Sun ◽  
Yan Liu ◽  
Jie Lu
Keyword(s):  
Mechanical Property ◽  
Tensile Strength ◽  
Thermal Behavior ◽  
Thermo Gravimetric Analysis ◽  
Crystallization Rate ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Gravimetric Analysis ◽  
Scanning Calorimetry ◽  
Melt Mixing

Diatomite was treated by titanate coupling agent and blended with low-density polyethylene (LDPE) by the method of melt-mixing blend. The performance of the blends, such as thermal behavior, mechanical property and microstructure, were analyzed with differential scanning calorimetry, thermo-gravimetric analysis, tensile strength testing and scanning electron microscopy. The results showed that influenced the crystalline behavior of LDPE phase in the blends and made the crystallization rate of LDPE phase decreased. Moreover, the thermo-decomposing temperature of the blends increased with increasing the diatomite content, diatomite significantly improved the thermal stability of the blends. Tensile strengths of the blends firstly decreased and then increased. When the diatomite content was 30%wt, the tensile strength of the blend reached to 14.6MPa. SEM photographs showed the good dispersion and interaction.

Thermal Behavior and Degradation Kinetics of Compatibilized Metallocene-Linear Low Density Polyethylene/Nanoclay Nanocomposites

2014 ◽  
Vol 53 (9) ◽  
pp. 890-902 ◽  
Author(s):  
Navid Kaptan ◽  
Seyed Hassan Jafari ◽  
Saeedeh Mazinani ◽  
Shahin Akhlaghi ◽  
Hakimeh Fazilat ◽  
...  
Keyword(s):  
Thermal Behavior ◽  
Degradation Kinetics ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Kinetics Of

Effect of Step-Heating on Microstructure and Mechanical Properties of Linear Low Density Polyethylene/Multi-Walled Carbon Nanotube Composites Prepared via Melt Mixing Process

2014 ◽  
Vol 979 ◽  
pp. 107-110
Author(s):  
Samor Boonphan ◽  
Pisith Singjai
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotube ◽  
Testing Machine ◽  
Single Step ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Melt Mixing ◽  
Multi Walled Carbon Nanotube ◽  
Step Heating

Step-heating (single-and four-step heating) was used in the melt-mixing preparation of linear low density polyethylene (LLDPE)/multi-walled carbon nanotube (MWNT) composites. The MWNT in the composites were used at volume fractions of 0, 1, 3, 5, and 10 vol% (four-step heating), and 0, 1, 3, and 5 vol% (single-step heating). The effects of the heating steps on the microstructure of the LLDPE/MWNT composites were studied. An ultimate tensile testing machine and an impact testing machine were used to characterize the mechanical properties of the composites. The sample prepared using four-step heating had a lower porosity than the sample prepared using single-step heating. The sample with 3 vol% MWNT that was prepared using four-step heating had tensile strength, elastic modulus, and impact strength values that were higher than those of the other samples.

scholarly journals The optimization of Carreau model and rheological behavior of alumina/linear low-density polyethylene composites with different alumina content and diameter

e-Polymers ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 742-753
Author(s):  
Guo Li ◽  
Mitao Zhang ◽  
Huajian Ji ◽  
Yulu Ma ◽  
Tao Chen ◽  
...  
Keyword(s):  
Particle Diameter ◽  
Low Density Polyethylene ◽  
Average Particle ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Carreau Model ◽  
Zero Shear Viscosity ◽  
Melt Mixing ◽  
Sem Images ◽  
Parameter Values

Abstract The influence of alumina (Al2O3) content and diameter on the viscosity characteristics of the alumina/linear low-density polyethylene (Al2O3/LLDPE) composites was discussed. The composites were fabricated by melt mixing with the two-rotor continuous mixer. The equivalent surface average particle diameter ( d ¯ A {\bar{d}}_{\text{A}} ) of Al2O3 was calculated by the scanning electron microscopic (SEM) images of samples. The steady-state and dynamic rheological measurements were used to study the evolution of viscosity parameters. With the Carreau model fitting to the steady-rate rheological data, zero-shear viscosity η 0, time constant λ, and power law index n of composites were obtained. On this basis, an optimized Carreau model was established by studying the changes of these parameter values. The rheological result presented that the parameter values (η 0, λ, and n) were linearly proportional to the filling content of Al2O3 particles for nano-Al2O3/LLDPE composites. However, these parameters were, respectively, related to d ¯ A {\bar{d}}_{\text{A}} , d ¯ A 2 {\bar{d}}_{\text{A}}^{2} , and d ¯ A 3 {\bar{d}}_{\text{A}}^{3} for micron-Al2O3/LLDPE composites.

Tensile Properties of Linear Low Density Polyethylene (LLDPE)/ Recycled Acrylonitrile Butadiene Rubber (NBRr)/ Rice Husk Powder (RHP) Composites

2015 ◽  
Vol 754-755 ◽  
pp. 210-214 ◽  
Author(s):  
Ragunathan Santiagoo ◽  
Sam Sung Ting ◽  
Hanafi Ismail ◽  
Mastura Jaafar
Keyword(s):  
Tensile Strength ◽  
Tensile Properties ◽  
Rice Husk ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Butadiene Rubber ◽  
Linear Low Density Polyethylene ◽  
Melt Mixing ◽  
Elongation At Break ◽  
Acrylonitrile Butadiene Rubber

The compatibilizer effect of ENR-50 on the tensile properties and morphology of linear low density polyethylene (LLDPE)/ recycled acrylonitrile butadiene rubber (NBRr)/ rice husk powder (RHP) composites has been studied. The RHP size utilize in this work is 150 – 300 μm. LLDPE/NBRr/RHP composites were prepared by melt mixing technique at 180 °C for 9 minutes at 50 rpm rotor speed using heated two roll mill. The series of composites investigated were 100/0/5, 80/20/5, 70/30/5, 60/40/5, 50/50/5, and 40/60/5. The composites were analysed by using tensile test and morphology examination. The result showed that the tensile strength of composite was decreased with the increasing of recycled acrylonitrile butadiene rubber (NBRr) content while elongation at break (Eb) were increased. However, the tensile strength and elongation at break result for composites with ENR-50 as compatibilizer showed higher values. The morphological finding supports the tensile properties which indicate better interaction between the RHP filler and LLDPE/NBRr matrix in the presence of ENR-50 compatibilizer.

scholarly journals Effect of soil burial on silane treated and untreated kenaf fiber filled linear low-density polyethylene/polyvinyl alcohol composites

BioResources ◽  
2020 ◽  
Vol 15 (4) ◽  
pp. 8648-8661
Author(s):  
Ai Ling Pang ◽  
Agus Arsad ◽  
Mohsen Ahmadipour ◽  
Hanafi Ismail ◽  
Azhar Abu Bakar
Keyword(s):  
Weight Loss ◽  
Surface Morphology ◽  
Polyvinyl Alcohol ◽  
Tensile Properties ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Melt Mixing ◽  
Soil Burial ◽  
Burial Duration

In recent decades, natural fibers have become widely used with petroleum based polymers such as polyethylene (PE) and polypropylene (PP) because of their light weight, lower cost, and inherent biodegradability. In the present work, linear low-density polyethylene/polyvinyl alcohol (LLDPE/PVOH) composites with untreated kenaf and silane-treated kenaf at filler loadings of 0, 10, and 40 phr were prepared via the melt mixing process. The soil burial test was used to evaluate the degradability of the composites for different durations (90 and 180 d). The tensile properties, surface morphology, chemical composition, percentage of weight loss, and crystallinity of the composites before and after degradation were evaluated. With increased kenaf loading and soil burial duration, all the composites showed a decrease in tensile properties. This was further confirmed by the changes in surface morphology and chemical structure of the buried composites. The increase in weight loss percentage and crystallinity after soil burial indicated that the longer burial duration had increased the degradation of composites. Composites with silane-treated kenaf exhibited lower degradability than that of composites with untreated kenaf after being buried for 90 and 180 d. This may be attributed to the improved adhesion of kenaf to the LLDPE/PVOH matrix via silane treatment.

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