Comparative study of maleated polyolefins as compatibilizers for polyethylene/wood flour composites

Lai, Sun‐Mou; Yeh, Feng-C.; Wang, Yeh; Chan, Hsun-C.; Shen, Hsiao-F.

doi:10.1002/app.11419

Cited by 149 publications

(73 citation statements)

References 70 publications

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“…For the past decades, research on different types of coupling agents to improve the adhesion between the wood and the plastic has been carried out. The most commonly used coupling agents were maleated polyolefins [16,17]. Felix and Gatenholm found that polypropylene-(maleic anhydride) copolymer was covalently bonded to the fibers through esterification.…”

Section: Introductionmentioning

confidence: 99%

Effects of alkaline and silane treatments on the water‐resistance properties of wood‐fiber‐reinforced recycled plastic composites

Cui

Tao

2008

Vinyl Additive Technology

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The water-resistance properties of wood-fiber-reinforced recycled plastic composites (WRPCs) prepared from postconsumer high-density polyethylene (HDPE) and wood fibers from saw mills were studied. Three methods consisting of an alkaline method (AM), a silane method (SM), and a combination of the alkaline and silane methods (ASM) were used to modify the wood fibers. The effects of fiber/matrix mix ratio and surface treatment on the moisture content, thickness swelling, and flexural strength change of the WRPCs, before and after immersion in 608C water for 8 weeks, were studied and analyzed. The flexural fractured surfaces of the WRPCs before and after immersion in hot water were examined, and the fracture mechanism of the WRPCs was discussed. The results showed that the different surface treatments of the wood fibers had significant effects on the moisture content, thickness swelling, and flexural strength of the WRPCs after a long immersion time in hot water. For WRPCs treated by ASM, the moisture content was the lowest, the thickness swelling was at a minimum, and the flexural strength was the highest. Higher water absorption of composites with fiber treated by the AM or SM methods, as compared to those treated by ASM, could be attributed to the incomplete adhesion and wettability between the wood fibers and the polymer matrix, which may have caused more gaps and flaws at the interface.

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Section: Introductionmentioning

confidence: 99%

Effects of alkaline and silane treatments on the water‐resistance properties of wood‐fiber‐reinforced recycled plastic composites

Cui

Tao

2008

Vinyl Additive Technology

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“…Natural fibers have some significant advantages as reinforcements in polymer composites, such as low cost, low density, biodegradability, availability of renewable natural resources and good mechanical properties [2][3][4][5][6][7]. However, the main disadvantage of these natural fiber=polymer composites seems to be the incompatibility between the hydrophilic natural fibers and the hydrophobic thermoplastic matrix [8][9][10][11][12][13][14]. Thus, in order to develop composites with good properties, it is necessary to improve the interfacial adhesion between the matrix and the cellulosic fibers.…”

Section: Introductionmentioning

confidence: 99%

Effect of Fiber Content and Chemical Treatment on the Thermal Properties ofSpartium junceumFiber-Reinforced Polypropylene Composites

Nekkaa

Guessoum

Chebira

et al. 2008

International Journal of Polymeric Materials

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The thermal and crystallization behavior of PP=Spartium junceum fiber composites were studied by thermogravimetry (TGA) and differential scanning calorimetry (DSC). The surface modification of Spartium junceum fibers was carried out using silane coupling agents in order to improve the interfacial adhesion between the fiber and the matrix. The effects of fiber content and chemical treatment on thermal properties were evaluated. It was found that Spartium junceum fiber degraded before the PP matrix but the thermal stability of the PP=Spartium junceum fiber composites was higher than those of the fiber and the matrix. DSC measurements showed that the incorporation of Spartium junceum fiber caused an increase in the crystallinity of the matrix. These effects have been attributed to the fact that the surfaces of Spartium junceum fibers act as nucleating agents for the crystallization of the polymer, promoting the growth and the formation of transcrystalline regions around the fibers.

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“…Particularly for different applications in the industry, rheological and mechanical properties have vital importance in order to classify polymers based on their chemical structures and standardize polymer diversity [6,7]. Researchers analyzed the melt flow index results of foam wood fibers and polypropylene test mixtures.…”

Section: Introductionmentioning

confidence: 99%

Investigation of rheological and mechanical properties of wood flour reinforced polypropylene

Güldaş

Zeyveli

Kaya³

et al. 2018

Materialwissenschaft Werkst

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This study aims to investigate the rheological and mechanical properties of polypropylene when reinforced by wood flour. In the study, wood flour (WF) was added as filling material to polypropylene (PP), and its effects were investigated. The grain size of the wood flour was 300 mm. Wood flour was mixed into polypropylene material at different rates of weight. Viscosity changes of the polypropylene at various temperatures and pressure values of the concentration rates were documented. As a result, viscosity increases as the amount of wood flour filling is increased; yet as temperature, pressure and shear rate are increased, viscosity decreases. The study also focuses on the changes in its mechanical properties of polypropylene reinforced with wood flour. The tensile strength of reinforced polypropylene at varying percentages (wt. 5 %, wt. 10 % and wt. 15 %) was observed to decrease by 11 %, 16 % and 21 %, respectively, compared to that of non-reinforced polypropylene. Additionally, impact tests showed that the highest energy absorption was in 10 % wood flour reinforced polypropylene.

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Comparative study of maleated polyolefins as compatibilizers for polyethylene/wood flour composites

Cited by 149 publications

References 70 publications

Effects of alkaline and silane treatments on the water‐resistance properties of wood‐fiber‐reinforced recycled plastic composites

Effects of alkaline and silane treatments on the water‐resistance properties of wood‐fiber‐reinforced recycled plastic composites

Effect of Fiber Content and Chemical Treatment on the Thermal Properties ofSpartium junceumFiber-Reinforced Polypropylene Composites

Investigation of rheological and mechanical properties of wood flour reinforced polypropylene

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