Thermal properties of bio-flour-filled polyolefin composites with different compatibilizing agent type and content

Kim, Hee Soo; Kim, Sumin; Kim, Hyun Joong; Han, Yang‐Su

doi:10.1016/j.tca.2006.09.013

Cited by 304 publications

(197 citation statements)

References 23 publications

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“…The highly hydrophobic polymeric matrix is not compatible with the highly hydrophilic filler (ligno-cellulosic material) which gives poor adhesion among matrixfiller interface and this is responsible for a decrease in mechanical and thermal performance of composites. [10][11][12] One of the methods used to enhance filler dispersion and polymer-filler adhesion/interaction is the use of compatibilizer agents such as maleic anhydride-grafted polypropylene (PP-g-MA) or maleic anhydride-grafted polyethylene (PE-g-MA). 5,10,[12][13][14][15][16][17] These compatibilizers act as a bridge between the ligno-cellulosic particle and the polymeric chains because of their dual functionality.…”

Section: Introductionmentioning

confidence: 99%

Development and characterization of green composites from bio‐based polyethylene and peanut shell

Garcia‐Garcia

Carbonell‐Verdu

Jordá‐Vilaplana

et al. 2016

J of Applied Polymer Sci

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In the present work, different compatibilizers, namely polyethylene-graft-maleic anhydride (PE-g-MA), polypropylene-graft-maleic anhydride (PP-g-MA) and polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene-graft-maleic anhydride (SEBS-g-MA) were used on green composites derived from biobased polyethylene and peanut shell flour to improve particle-polymer interaction. Composites of high-density polyethylene/peanut shell powder (HDPE/PNS) with 10 wt% peanut shell flour were compatibilized with 3 wt% of the abovementioned compatibilizers. As per the results, PP-g-MA copolymer lead to best optimized properties as evidenced by mechanical characterization. In addition, best particle-matrix interface interactions with PP-g-MA were observed by scanning electron microscopy (SEM). Subsequently HDPE/PNS composites with varying peanut shell flour content in the 5 -30 wt% range with PP-g-MA compatibilizer were obtained by melt extrusion and compounding followed by injection molding and were characterized by mechanical, thermal and morphological techniques. The results showed that peanut shell powder, leads to an increase in mechanical resistant properties (mainly, flexural modulus and strength) while a decrease in mechanical ductile properties i.e. elongation at break and impact absorbed energy is observed with increasing peanut shell flour content. Furthermore, peanut shell flour provides an increase in thermal stability due to the natural antioxidant properties of peanut shell. In particular, composites containing 30 wt% peanut shell powder present a flexural strength 24% and a flexural modulus 72% higher than the unfilled polyethylene and the thermo-oxidative onset degradation temperature is increased from 232 ºC up to 254 ºC thus indicating a marked thermal stabilization effect. Resultant composites can show a great deal of potential as base materials for wood plastic composites.3

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Section: Introductionmentioning

confidence: 99%

Development and characterization of green composites from bio‐based polyethylene and peanut shell

Garcia‐Garcia

Carbonell‐Verdu

Jordá‐Vilaplana

et al. 2016

J of Applied Polymer Sci

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“…According to the TGA curves, the degradation of baggase started at 240°C, which was related to the low-temperature stage from degradation of cellulose and hemicelluloses and the high-temperature stage from degradation of lignin. The temperature of thermal degradation of hemicelluloses, cellulose, and lignin are between 150-350, 275-350, and 250-500°C, respectively [4][5][6]. Therefore, the major sources of the first thermal degradation step in composites are the degradation of hemicelluloses, cellulose, and lignin [23,24].…”

Section: Tga Analysismentioning

confidence: 99%

“…However, there are disadvantages as well. Such as incompatibility between the hydrophilic natural fibers and the hydrophobic plastic part, low bulk density and in turn, agglomeration and difficulty in processing, water absorption and lower dimensional stability and the last but not least thermal instability of natural fibers during processing at high temperatures [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…Thermal degradation is also an important aspect in the development of natural fibers composites since it will strongly affect the maximum temperature used in the processing of the composites and will indirectly determine the maximum retention time of the materials in the processing system. Thermal degradation is therefore, one major limitation frequently encountered when using natural fibers as reinforcement in a polymeric matrix [5,6]. The most common technique to investigate the mass change, thermal decomposition, and thermal stability of composite materials is thermal gravimetric analysis (TGA) [4].…”

Section: Introductionmentioning

confidence: 99%

“…The most common technique to investigate the mass change, thermal decomposition, and thermal stability of composite materials is thermal gravimetric analysis (TGA) [4]. In addition, knowledge of the kinetic parameters associated with thermal degradation constitutes an important tool in estimating the thermal behavior of such composites [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of Organically Modified Nanoclay on Thermal and Combustion Properties of Bagasse Reinforced HDPE Nanocomposites

2016

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The nanocomposites of high density polyethylene (HDPE)/bagasse flour (BF) with different contents of the organomodified montmorillonite (OMMT) were produced by melt blending process. The thermal stability and combustion behavior of nanocomposites were characterized by thermogravimetric analysis (TGA), differential scanning calorimetry, and cone calorimeter tests. The results of TGA data of the nanocomposites indicated that the OMMT greatly enhanced the thermal stability, and char residues of the HDPE/BF blends gradually increased with increasing the OMMT content. The activation energy was determined to describe the energy consumption of the initiation of the thermal degradation process. The composites produced with the 6 phc OMMT had the highest activation energy values among the evaluated composites (106 kJ/mol), whereas composites without nanoclay exhibited the lowest one. Furthermore, as the OMMT was incorporated into the nanocomposites, the melting temperature (T m ), crystallization temperature (T c ) melting enthalpy (DH m ) and crystallinity (X c ) of HDPE/BF blends increased. The findings showed that the OMMT effectively boosted the flame retardancy of nanocomposites due to the formation of the carbonaceous silicate char shields delayed time to ignition and the combustion process was remarkably hindered.

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Thermal Decomposition of Natural Fibers: Kinetics and Degradation Mechanisms

Poletto

Ornaghi

Zattera

2015

Reactions and Mechanisms in Thermal Analysis of Advanced Materials

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Thermal properties of bio-flour-filled polyolefin composites with different compatibilizing agent type and content

Cited by 304 publications

References 23 publications

Development and characterization of green composites from bio‐based polyethylene and peanut shell

Development and characterization of green composites from bio‐based polyethylene and peanut shell

Influence of Organically Modified Nanoclay on Thermal and Combustion Properties of Bagasse Reinforced HDPE Nanocomposites

Thermal Decomposition of Natural Fibers: Kinetics and Degradation Mechanisms

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