Effect of Compatibilizer on Impact Strength and Morphology of Polystyrene/Zinc Oxide Nanocomposites

2012 ◽  
Vol 545 ◽  
pp. 330-334
Author(s):  
Sirirat Wacharawichanant ◽  
Pranee Saetun ◽  
Thunwawon Lekkong ◽  
Thongyai Supakanok
Keyword(s):  
Particle Size ◽  
Zinc Oxide ◽  
Impact Strength ◽  
Impact Test ◽  
Screw Extruder ◽  
Melt Mixing ◽  
Zno Particles ◽  
Twin Screw ◽  
The Impact ◽  
Scanning Electron

This article investigated the effects of particle size of zinc oxide (ZnO) and polystyrene-co-maleic anhydride (SMA) compatibilizer on impact strength and morphology of polystyrene (PS)/ZnO71 (71 nm) and PS/ZnO250 (250 nm) nanocomposites. PS/ZnO nanocomposites with varying concentration of ZnO and SMA were prepared by a melt mixing technique in a twin screw extruder. It was found that the impact strength of PS nanocomposites increased up to a ZnO content of 1.0 wt%. Moreover, PS/ZnO250 nanocomposites had higher impact strength than PS/ZnO71 nanocomposites. The addition of SMA increased the impact strength of PS/ZnO nanocomposites with increasing SMA content. The result showed that SMA could improve impact strength of nanocomposites. The dispersion of ZnO particles on PS/ZnO nanocomposites was studied by scanning electron microscope (SEM). It was observed that the dispersion of ZnO particles of PS/ZnO nanocomposites without SMA was non-uniform and the agglomeration of ZnO particles in the polymer matrix increased with increasing ZnO content. The dispersion of ZnO particles of PS/ZnO nanocomposites after adding SMA was relatively good and only few aggregations exist. These observations support the results of the impact test where the PS/ZnO nanocomposites with SMA displayed higher impact strength than the PS/ZnO nanocomposites without SMA. The study showed that SMA was used as a compatibilizer to improve the dispersability and compatibility of ZnO particles in PS matrix.

Rheology, Morphology and Mechanical Properties of PA6/PP-g-MAH/POE Blends

2011 ◽  
Vol 366 ◽  
pp. 310-313
Author(s):  
Ming Tao Run ◽  
Meng Yao ◽  
Bing Tao Xing ◽  
Wen Zhou
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Screw Extruder ◽  
Reinforcing Agent ◽  
Twin Screw ◽  
Impact Tester ◽  
The Impact ◽  
Plastic Fluids ◽  
Morphology And Mechanical Properties ◽  
Toughening Agent

The rheology, morphology and mechanical properties of the PA6/PP-g-MAH/POE blends prepared by twin-screw extruder were studied by rheometer, scanning electron microscopy, universal tester and impact tester, respectively. The results suggest that the impact strength is improved by the POE acting as a toughening agent, while the compatibility of PA6 and POE is improved by the compatibilizer of PP-g-MAH. Furthermore, the PP-g-MAH component also acts as a reinforcing agent for decreasing the strength depression induced by the POE component. When POE content is about 9 wt% and PP-g-MAH content is about 10% in blends, the blend has the maximum tensile strength and impact strength. All melts of PA6/PP-g-MAH/POE blends are pseudo-plastic fluids. Both the POE and PP-g-MAH components can increase the apparent viscosity of the melt due to their facility of the linear molecular.

Effect of Compatibilizers on Mechanical Thermal and Morphology Properties of HDPE/TiO2 Nanocomposites

2010 ◽  
Vol 93-94 ◽  
pp. 169-172
Author(s):  
N. Wiriyanukul ◽  
S. Wacharawichanant
Keyword(s):  
Tensile Strength ◽  
Electron Microscope ◽  
High Density Polyethylene ◽  
Morphological Properties ◽  
Screw Extruder ◽  
Melt Mixing ◽  
Before And After ◽  
Twin Screw ◽  
Dispersion Of Nanoparticles ◽  
Scanning Electron

This work studies the effect of PE-g-MA compatibilizer on mechanical thermal and morphological properties of high density polyethylene (HDPE)/titanium dioxide (TiO2) nanocomposites. The HDPE/TiO2 nanocomposites with and without PE-g-MA compatibilizer were prepared by melt mixing technique in a twin screw extruder. The results found that Young's Modulus of HDPE/TiO2 nanocomposites increased with increasing TiO2 contents. The addition of PE-g-MA compatibilizer had no significant effect on the tensile strength and stress at break of HDPE/TiO2 nanocomposites. The decomposition temperatures of HDPE/TiO2 nanocomposites before and after adding PE-g-MA compatibilizer increased with increasing TiO2 contents. The dispersion of TiO2 nanoparticles in HDPE matrix was observed by scanning electron microscope (SEM). The dispersion of nanoparticles in HDPE matrix with PE-g-MA compatibilizer was relatively good, only a few aggregates exited.

Morphological, mechanical, and thermal properties of PP/SEBS/talc composites

2019 ◽  
pp. 089270571987667 ◽  
Author(s):  
Carlos Ivan Ribeiro de Oliveira ◽  
Marisa Cristina Guimarães Rocha ◽  
Joaquim Teixeira de Assis ◽  
Ana Lúcia Nazareth da Silva
Keyword(s):  
Thermal Properties ◽  
Impact Resistance ◽  
Mechanical And Thermal Properties ◽  
Processing Conditions ◽  
Screw Extruder ◽  
Crystallinity Degree ◽  
Twin Screw ◽  
The Impact ◽  
Scanning Electron ◽  
Nucleating Effect

The aim of this study is to evaluate the effect of some experimental variables such as the content of styrene–ethylene–butylene–styrene (SEBS) and talc, processing conditions and mixing protocol on the properties of polypropylene (PP). To achieve this objective, PP/SEBS blends and PP/SEBS/talc composites were processed in a corotating twin-screw extruder. A masterbatch of PP/talc was prepared before the extrusion of PP/SEBS/talc composites. The morphology of blends and composites was evaluated by scanning electron microscopy, which revealed the dispersion of small rubber droplets in the PP matrix. Moreover, the micrographs also showed that SEBS and talc particles were uniformly dispersed and distributed in the polymer matrix. Results of thermal properties showed that talc had a nucleating effect, which promoted the increase of both PP crystallization temperature and crystallinity degree. The incorporation of talc in PP/SEBS blends led to an expressive increase in the impact resistance by 70% as compared with the reference blend: PP/SEBS 80/20% (w/w). This result reveals that although the PP/SEBS/talc composites showed a separated morphology, the good dispersion and distribution of this mineral filler in the polymers contributed to avoid crack propagation and increase the impact properties. The tensile properties in the elastic region were not significantly affected.

The impact properties of a polyamide 6– polytetrafluoroethylene composite

2009 ◽  
Vol 224 (1) ◽  
pp. 13-17 ◽  
Author(s):  
J Li ◽  
Y F Zhang
Keyword(s):  
Electron Microscope ◽  
Interfacial Adhesion ◽  
Polyamide 6 ◽  
Continuous Phase ◽  
Dispersed Phase ◽  
Screw Extruder ◽  
Impact Properties ◽  
Twin Screw ◽  
The Impact ◽  
Scanning Electron

Polyamide 6 (PA6)-filled polytetrafluoroethylene (PTFE) at different compositions has been successfully prepared in a corotating twin screw extruder where PTFE acts as the polymer matrix and PA6 as the dispersed phase. The morphology and impact properties of these blends were investigated using a scanning electron microscope. The presence of PA6 particles dispersed in the PTFE continuous phase exhibited a coarse morphology. Increasing PA6 contents in the blend improved the impact properties at weak deformation. It was found that the interfacial adhesion played an important role in the creation of an interphase that was formed by the interaction between the PTFE and PA6. This induced an improvement in impact properties. In addition, the optimum impact properties were obtained when the content of PA6 is 30 vol%.

Mechanical Properties of Polyamide 6 (Pa6) / Ethylene Vinyl Acetate (Eva) / Sepiolite Composite

2014 ◽  
Vol 554 ◽  
pp. 62-65 ◽  
Author(s):  
Noora Tiqah Mohamad Fauzi ◽  
Zurina Mohamad
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Vinyl Acetate ◽  
Ethylene Vinyl Acetate ◽  
Polyamide 6 ◽  
The Other ◽  
Screw Extruder ◽  
Twin Screw ◽  
Moulding Machine ◽  
The Impact

The objective of this study is to investigate the effect of sepiolite concentration (2-10 phr) on the mechanical properties of polyamide 6 (PA6) / ethylene vinyl acetate (EVA) blend at the ratio 80/20. Twin screw extruder and injection moulding machine were used to prepare the samples. The strength and modulus of flexural was increased until 6 phr of sepiolite content. On the other hand, the impact strength of PA6/EVA/sepiolite composite was decreased gradually as sepiolite content increased.

Composites of Polypropylene/Pottery Stone/Magnesium Oxysulfate

2012 ◽  
Vol 488-489 ◽  
pp. 643-647 ◽  
Author(s):  
Saowaroj Chuayjuljit ◽  
Thitima Rupunt ◽  
Thatisorn Karnjanamayul
Keyword(s):  
Thermal Stability ◽  
Impact Strength ◽  
Transfer Energy ◽  
Melt Mixing ◽  
Sem Images ◽  
Shaped Particle ◽  
Twin Screw ◽  
Magnesium Oxysulfate ◽  
The Impact ◽  
Thermal Stability Of

The impact strength, thermal stability and morphology of polypropylene (PP) composites filled with pottery stone (PTS) and magnesium oxysulfate (MOS) were investigated. PP/PTS composites were prepared by melt mixing of PP with four loadings of PTS (5, 10, 15 and 20 phr) and each PP/PTS composite with two loadings of MOS (3 and 5 phr) on a twin screw extruder, followed by injection molding into the impact test specimens. The SEM images show a particulate form of PTS particles and a needle-shaped particle with high aspect ratio of MOS. It is found that the impact strength of PP increased with increasing PTS and MOS loading levels. This is because PTS and MOS provide high ability to transfer energy from one phase to another. The thermal stability of PP was improved by shifting the Tonset, Tend set and %char residue towards higher values. Moreover, SEM images of the fractured surfaces show that PTS and MOS are well dispersed in the PP matrix.

Study the Effect of CaCO3 Nanoparticles on the Mechanical Properties of Virgin and Waste Polypropylene

2014 ◽  
Vol 1016 ◽  
pp. 23-33 ◽  
Author(s):  
A. Saad Najim ◽  
Nizar Jawad Hadi ◽  
Dhay Jawad Mohamed
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Processing Speed ◽  
Screw Extruder ◽  
Physical Technique ◽  
Mechanical And Physical Properties ◽  
Twin Screw ◽  
The Impact ◽  
Waste Polypropylene

This paper study the effect of the calcium carbonate (CaCO3) nanoparticleson mechanical and physical properties of virgin and waste polypropylene (pp.). 3, 5, 7 and 10 (wt. %) of CaCO3nanoparticles are mixed with each of virgin and waste pp.These mixture are blended in co-rotating twin screw extruder at 190 °Cand different screw speed (25 and 50 rpm). Different mechanical and physical technique are used to evaluate the characteristics of polymer nanocomposites ex: Tensile strength , elastic modulus , impact strength , hardness and density. The results of virgin pp./(CaCO3) showed that The tensile strength decreasing with nano(CaCO3) concentration for virgin pp. , while for waste increasing at 5% and then decreasing gradually. The impact strength increasing with nanoCaCO3concentration increasing. The hardness and density increasing with the increasing of the nanoCaCO3concentration for two type of pp.Nearly all the mechanical properties were found to increase with the processing speed of 25 rpm. In this studies, it was seen that the highest processing speed of 50 rpm does not give the material performance enhancements due to higher shear intensity which causes defect points in the structure. Also the time is smaller at high screw speeds, so there is not enough time for good dispersion to occur.

scholarly journals Effect of CaCO3 Particles Size and Content on Impact Strenght of Kenaf/CaCO3/Epoxy Resin Hybrid Composites

2020 ◽  
Vol 10 (01) ◽  
pp. 24
Author(s):  
Harini Sosiati ◽  
Cahyo Trisedyo Utomo ◽  
Iwan Setiono ◽  
Cahyo Budiyantoro
Keyword(s):  
Particle Size ◽  
Impact Strength ◽  
Epoxy Resin ◽  
Impact Test ◽  
Hybrid Composites ◽  
Resin Matrix ◽  
Kenaf Fiber ◽  
Epoxy Resin Matrix ◽  
Uniform Dispersion ◽  
The Impact

Thermoplastic and thermoset polymer composites reinforced with kenaf fiber or CaCO<sub>3</sub> have been extensively investigated. However, the study on the combination of kenaf fiber and CaCO<sub>3</sub> reinforced epoxy resin is rare. This research discussed the effect of CaCO<sub>3</sub> particle size and the ratio of kenaf to CaCO<sub>3</sub> content on the impact strength of alkali-treated kenaf/ CaCO<sub>3</sub>/epoxy resin hybrid composites. Thirty % of the hybrid kenaf fibers and CaCO<sub>3</sub> particles reinforced epoxy resin composites were fabricated by hand lay-up technique followed by cold press. Impact test of the composite specimens was conducted using a Charpy Impact test according to ASTM D 6110. The morphology of impact fracture surface was examined by scanning electron microscopy (SEM). The results showed that the impact strength of the hybrid composite increased with the decrease of CaCO<sub>3</sub> particle size, and increasing the ratio of kenaf to CaCO<sub>3</sub>. Interfacial bonding between the reinforcement (kenaf and CaCO<sub>3</sub>) and epoxy resin matrix, the uniform dispersion of kenaf and CaCO<sub>3</sub> within the epoxy resin matrix are two crucial factors influencing the impact strength of the composite.

Effect of Type and Concentration of Ionomer Compatibilizer on the Hdpe/ Ionomer/ Clay Nanocomposites Morphology

2010 ◽  
Vol 644 ◽  
pp. 17-20 ◽  
Author(s):  
S. López-García ◽  
Saul Sánchez-Valdés ◽  
L.F. Ramos de Valle
Keyword(s):  
Electron Microscopy ◽  
High Density Polyethylene ◽  
Clay Nanocomposites ◽  
Screw Extruder ◽  
Melt Mixing ◽  
X Ray ◽  
Twin Screw ◽  
Thermal Stability Of ◽  
Cloisite 20A ◽  
Scanning Electron

A study of the effect of an ionomer compatibilizer (surlyn® 9520 and 9721, both with zinc as the neutralizing cation) on the morphology and properties of a high density polyethylene (HDPE) - montmorillonite clay nanocomposite was carried out. The nanoclay used was cloisite 20A®. Polyethylene /Ionomer /Clay nanocomposites were prepared via melt mixing in a twin screw extruder. The nanoclay dispersion and exfoliation were examined through X-Ray Difraction (XRD) and Scanning Electron Microscopy (SEM). TGA was carried out to determine the effect of nanoclay on the thermal stability of the HDPE nanocomposites. Results showed that both ionomers impart a marked compatibility between the polymer and the nanoclay, promoting the exfoliation of the nanoclay within the HDPE matrix. Nonetheless, ionomer 9520 (with the higher degree of neutralization) at 10 and 12 wt% content produced completely exfoliated morphologies, whereas, the ionomer 9721 produced a lesser degree of exfoliation with few tactoids.

Behaviour of PLA/POSS nanocomposites: Effects of filler content, functional group and copolymer compatibilization

2021 ◽  
pp. 096739112110080
Author(s):  
Yelda Meyva Zeybek ◽  
Cevdet Kaynak
Keyword(s):  
Functional Group ◽  
Filler Content ◽  
Mechanical And Thermal Properties ◽  
Screw Extruder ◽  
Melt Mixing ◽  
Grafted Copolymer ◽  
Before And After ◽  
Twin Screw ◽  
Oligomeric Silsesquioxane ◽  
Matrix Nanocomposites

The main purpose of this study was to investigate influences of three parameters on the mechanical and thermal properties of the polylactide (PLA) matrix nanocomposites filled with polyhedral oligomeric silsesquioxane (POSS) particles. For the first parameter of “Filler Content”, nanocomposites with 1, 3, 5, 7 wt% basic POSS structure were compared. For the second parameter of “Functional Group,” basic POSS structure having only nonpolar isobutyl groups were compared with three other functionalized POSS structures; i.e. aminopropylisobutyl-POSS (ap-POSS), propanediolisobutyl-POSS (pd-POSS) and octasilane-POSS (os-POSS). Finally, for the third parameter of “Copolymer Compatibilization,” all specimens were compared before and after their maleic anhydride (MA) grafted copolymer compatibilization. Specimens were produced with twin-screw extruder melt mixing and shaped under compression molding. Various tests and analyses indicated that the optimum filler content for the improved mechanical properties was 1 wt%; while the optimum structure for strength and modulus was pd-POSS structure, in terms of fracture toughness it was basic POSS structure. Additional use of MA compatibilization was especially effective for the basic POSS and os-POSS particles.

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