Studies on the physico‐mechanical, thermal, and morphological behaviors of high density polyethylene/coleus spent green composites

Syed, Murtuza Ali; Akhtar, Sania; Siddaramaiah,; Syed, Akheel Ahmed

doi:10.1002/app.32905

Cited by 27 publications

(30 citation statements)

References 25 publications

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“…In the second step, PCR-HDPE degradation (TGA) occurred between 450, 442, and 440°C with DTG at 501, 500, and 500°C for composites containing 30 wt%, 40 wt%, and 50 wt% of OWS, respectively. This phenomenon has also been reported for other polymers reinforced with lignocellulosic fibres 24,26 . The TGA data relates to the temperatures corresponding to initial weight loss.…”

Section: Thermal Stabilitysupporting

confidence: 85%

“…Thermogravimetric analysis involves measurement of the weight loss or gain of a material as a function of time and temperature 23 , and it has proved to be an effective method for evaluating the thermal stability of polymers 24,25 . The TGA and derivative thermogravimetric (DTG) curves of PCR-HDPE composites containing 30 wt%, 40 wt%, and 50 wt% of OWS are shown in Fig.…”

Section: Thermal Stabilitymentioning

confidence: 99%

“…The first one, which corresponded to the degradation (TGA) of wood components (e.g., hemicelluloses, cellulose, lignin), started at about 249, 231, and 195°C with maximum weight loss rates (DTG) at 364, 360, and 361°C for the composites with 30 wt%, 40 wt%, and 50 wt% of OWS, respectively. The cellulose, hemicelluloses component of the natural filler in the composites degraded in the temperature range 274-459°C 24 . In the second step, PCR-HDPE degradation (TGA) occurred between 450, 442, and 440°C with DTG at 501, 500, and 500°C for composites containing 30 wt%, 40 wt%, and 50 wt% of OWS, respectively.…”

Section: Thermal Stabilitymentioning

confidence: 99%

“…From Table 2, it can be observed that the percentage weight decreased with increases in both the OWS content and the temperature. Higher values of this percentage weight indicate higher thermal stability of the composites 24,27 . This result was probably due to more degradation of OWS than PCR-HDPE occurring, and the poor interfacial adhesion between the OWS and the polymer matrix.…”

Section: Thermal Stabilitymentioning

confidence: 99%

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Mechanical and thermal properties of oil palm wood sawdust reinforced post-consumer polyethylene composites

Ratanawilai¹,

Thanawattanasirikul²,

Homkhiew³

2012

ScienceAsia

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Post-consumer recycled high-density polyethylene (PCR-HDPE) composites reinforced with 30, 40, and 50% of oil palm wood sawdust (OWS) were prepared by compression moulding. The effects of the OWS content and the moulding temperature on the flexural and compressive properties of the composites were investigated and were found to be highly significant. Increases in the proportion of OWS in the matrix caused a gradual worsening in the mechanical properties of the composites. However, higher moulding temperatures moderately improved the mechanical properties. Dynamic mechanical thermal analysis was used to study the viscoelastic behaviour, and thermogravimetric analysis was used to study the thermal stability of the composites. The storage and loss moduli gradually decreased with increasing temperature and significantly increased with increasing the proportion of OWS in the composites. The thermal stability of the composites slightly dropped with a higher OWS content. These results suggest that PCR-HDPE and OWS can be used to create composite materials with good mechanical and thermal properties.

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Section: Thermal Stabilitysupporting

confidence: 85%

Section: Thermal Stabilitymentioning

confidence: 99%

Section: Thermal Stabilitymentioning

confidence: 99%

Section: Thermal Stabilitymentioning

confidence: 99%

See 2 more Smart Citations

Mechanical and thermal properties of oil palm wood sawdust reinforced post-consumer polyethylene composites

Ratanawilai¹,

Thanawattanasirikul²,

Homkhiew³

2012

ScienceAsia

View full text Add to dashboard Cite

show abstract

“…Thermogravimetric analysis has proved to be an effective method for evaluating the thermal stability of polymers [27,28]. The TGA and derivative thermogravimetric (DTG) curves of rPP/OMF or RWF composites with particle sizes of 40-70 mesh, 70-100 mesh, and 40-100 mesh are shown in Figures 8 and 9, respectively.…”

Section: Thermal Stabilitymentioning

confidence: 99%

Influence of wood species and particle size on mechanical and thermal properties of wood polypropylene composites

et al. 2014

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This study aims to investigate the effects of two types of wood flour; oil palm mesocarp flour (OMF) and rubberwood flour (RWF), and their particle sizes on mechanical, physical, and thermal properties of wood flour reinforced recycled polypropylene (rPP) composites. The composite materials were manufactured into panels by using a twin-screw extruder. The rPP composites based on RWF significantly showed higher flexural, tensile, and compressive properties (both strength and modulus) as well as hardness and thermal stability than those composites based on OMF for the same particle sizes. However, distribution of RWF in the rPP matrix was less homogeneous than that of the rPP/OMF composites. Furthermore, a decrease of the particle sizes of filler for the rPP/OMF or RWF composites increased the flexural, tensile, compressive, and hardness properties. Likewise, the thermal stability of both OMF and RWF composites were insignificantly affected by the particle sizes.

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Phase Behaviors of PU/SPI Green Composites Using SAXS Profiles

Madhukar

Gowda

Annadurai³

et al. 2015

Adv Polym Technol

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A series of polyurethane (PU) green composites have been synthesized with varying amounts, namely 0, 2, 4, 8, and 12 wt% of soya protein isolate (SPI) by two methods. In the first method, castor oil (CO) and toluene-2,4-diisocyanate (TDI) molar ratio is CO/TDI : 1/1 with varying amounts of the SPI content. In the second method, the molar ratio of TDI is calculated by considering the -OH groups of both CO and SPI. We made the assumption that, in the first method, SPI acts as a filler and in the second method SPI is one of the coreactants in PU formation. The mechanical properties of the fabricated PU/SPI green composites are evaluated; and it is found that the tensile strength increases up to 8 wt% of SPI, and a further increase in SPI leads to reduction in the tensile strength. The small angle x-ray scattering profiles have been used to evaluate the arrangement of amorphous (A) and crystalline (C) regions in the PU/SPI green composites in a scale of about 700 Ǻ by considering the variation in scattered intensity with scattering angles ranging from 0.3°to 1.5°. For this purpose, a linear paracrystalline model is used. In this study, the exponential distribution of phase lengths gives a good agreement between the measured and computed data on the basis of a linear paracrystal model. It is observed that there are significant changes in the distribution of phase lengths due to changes in the composition and chemical structure of PU/SPI composites obtained by methods 1 and 2. C 2015 Wiley Periodicals, Inc. Adv Polym Technol 2016, 35, 21526; View this article online at wileyonlinelibrary.com.

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Studies on the physico‐mechanical, thermal, and morphological behaviors of high density polyethylene/coleus spent green composites

Cited by 27 publications

References 25 publications

Mechanical and thermal properties of oil palm wood sawdust reinforced post-consumer polyethylene composites

Mechanical and thermal properties of oil palm wood sawdust reinforced post-consumer polyethylene composites

Influence of wood species and particle size on mechanical and thermal properties of wood polypropylene composites

Phase Behaviors of PU/SPI Green Composites Using SAXS Profiles

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