Effect of Filler Loading on Curing Characteristic and Tensile Properties of Palygorskite Natural Rubber Nanocomposites

Nor, N. A. Mohd; Othman, Nadras

doi:10.1016/j.proche.2016.03.023

Cited by 43 publications

(32 citation statements)

References 13 publications

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“…However, there are other types of clay, e.g., fibrillar clays, less employed in the production of polymer nanocomposites. Among the fibrillar clays, palygorskite (Pal), exhibiting high elastic modulus, and high aspect ratio, along with chemical and thermal stability, has been included in the preparation of polymer nanocomposites based on Nylon 6 , polypropylene , polystyrene , epoxy resin , polyaniline , poly(butylene succinate) , and natural rubber , with a relative improvement in the properties. Surface modification of Pal is frequently required in order to promote polymer‐Pal miscibility and silane coupling agents are usually employed to modify Pal surface.…”

Section: Introductionmentioning

confidence: 99%

The effect of surface modification of Palygorskite on the morphology, mechanical, and thermal properties of Nylon 6/Palygorskite nanocomposites prepared by melt compounding

2017

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The effect of surface modification of Palygorskite (Pal) on the morphology and the mechanical and thermal properties of Nylon 6/Palygorskite nanocomposites, prepared by melt compounding, was investigated. A Pal mineral was purified, characterized, and surface modified separately with 3‐Aminopropyl trimethoxysilane and tributylhexadecyl‐phosphonium bromide in order to produce polymer nanoreinforcements. Organo‐Pals were characterized through SEM/EDX, FTIR, TGA, and XPS; surface energy was also determined. Experimental evidence confirmed the grafting of surface agents on the Pal surface; as expected, organo‐Pals exhibited high thermal stability and lower surface energy. Nylon 6/clay nanocomposites were melt‐compounded with different Pals at low Pal loadings. Pal dispersion was assessed by SEM and the thermal and mechanical properties were determined. In general, Pal exhibiting lower surface energy produced Nylon 6/Pal nanocomposites with improved Pal dispersion and properties. Pal particles favored the formation of γ crystalline form and increased the decomposition temperature of Nylon 6. The Pal aspect ratio in the Nylon 6/Pal nanocomposites was estimated from the experimental values of the elastic modulus using the Halpin–Tsai model; in addition, the Pal‐Nylon 6 interactions were estimated from the experimental values of the yield strength of nanocomposites with the Pukanszky's model. POLYM. COMPOS., 39:E1531–E1543, 2018. © 2017 Society of Plastics Engineers

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Section: Introductionmentioning

confidence: 99%

The effect of surface modification of Palygorskite on the morphology, mechanical, and thermal properties of Nylon 6/Palygorskite nanocomposites prepared by melt compounding

2017

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“…This might have been due to the prolonged surface activity among the glycerol and filler, which significantly delayed the ts2 and improve the processing safety towards an efficient vulcanization. In contrast, according to Nor and Othman [26], a low ts2 indicates an improvement in the workability of a compound once it is exposed to temperature. It is correlated to the thermal energy that can be endured by a compound before it is transformed to a vulcanizate due to the formation of crosslinks [14,25].…”

Section: Interaction Between Independent Variables Of the Nr/starch Cmentioning

confidence: 92%

“…It was observed that the rebound resilience decreased consistently with an increase in the carbon black loading. A significant number of authors have reported that the rebound resilience decreased with an increase in the filler loading [8,20,[26][27][28]. This was simply attributed to the dilution effect since the rubber portion is known to dominate the elastic response, which is later measured as the rebound resilience of a material [29,30].…”

Section: Interaction Between Independent Variables Of the Nr/starch Cmentioning

confidence: 99%

Optimization of physical and mechanical properties of glycerol - modified natural rubber/starch - filled carbon black composites using two level factorial design

Mazliah

Mohamad

Maulod

et al. 2019

JMES

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A statistical model was developed in this study to describe cure characteristic, rebound resilience and tensile strength of natural rubber/starch composites which was prepared by using a Haake internal mixer. Response surface methodology (RSM) based on central composite centered design (CCD) was employed to statistically evaluate and optimize the conditions for maximum cure characteristic, rebound resilience and tensile strength and study the significance and interaction of carbon black and glycerol on rebound resilience and tensile strength yield. The experimental runs were carried out according to a 22 full factorial design for the two identified design independent variables, namely, carbon black (X1) and glycerol (X2). With the use of the developed quadratic model equation, a maximum rebound resilience 71% was obtained to be a carbon black loading of 50 phr and glycerol loading of 7 %.

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“…Furthermore, it was reported that good dispersion control and the interaction between polymer-particle filler play a vital role in transferring properties from filler to matrix (Blattmann C.O. et al, 2019;Nor N.A.M. et al, 2016;Song K., 2017;Tanno K., 1990).…”

Section: Thermal and Mechanical Properties Of Nr-mentioning

confidence: 99%

Preparation and Properties of Spherical Natural Rubber/Silica Composite Powders via Spray Drying

Tang

Sopanon

Tanthapanichakoon

et al. 2020

KONA

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In this work, composite powders of natural rubber/silica (NR-SiO 2) were prepared via sol-gel and spray drying method. The morphology and physical properties of resultant rubber composite powders were characterized by scanning electron microscopy with energy dispersive X-ray spectrometry, laser light scattering particle sizer and thermogravimetric analyzer. The results showed that spray-dried NR-SiO 2 particles were spherical in shape with diameter of less than 10 μm, with silica on the outer layer. The particle size was found to increase gradually with the increase in NR/Si mass ratio. Marginal growth in particle size was observed with increasing feed flow rate. Increasing inlet air temperature improved the latex particle encapsulation by silica layer while maintaining the final particle size. The mechanical properties of NR-SiO 2 powders-filled polylactic acid (PLA) composite increase gradually with the addition of dried particles of higher rubber content. However, the composite exhibited relatively lower or reduced tensile strength and elongation at break compared to the host PLA polymer. This could be attributed to poor filler dispersion associated with weak filler/matrix interaction effect occurring during meltcompounding process.

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Effect of Filler Loading on Curing Characteristic and Tensile Properties of Palygorskite Natural Rubber Nanocomposites

Cited by 43 publications

References 13 publications

The effect of surface modification of Palygorskite on the morphology, mechanical, and thermal properties of Nylon 6/Palygorskite nanocomposites prepared by melt compounding

The effect of surface modification of Palygorskite on the morphology, mechanical, and thermal properties of Nylon 6/Palygorskite nanocomposites prepared by melt compounding

Optimization of physical and mechanical properties of glycerol - modified natural rubber/starch - filled carbon black composites using two level factorial design

Preparation and Properties of Spherical Natural Rubber/Silica Composite Powders via Spray Drying

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