Preparation and properties of wheat straw fiber‐polypropylene composites. I. Investigation of surface treatments on the wheat straw fiber

Pan, Mingzhu; Zhou, Dongshan; Deng, Jing‐Fa; Zhang, S. Y.

doi:10.1002/app.30325

Cited by 32 publications

(23 citation statements)

References 26 publications

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“…The  t c for MP/TMP 30 wt. % composites was 40.5 MPa, a value similar to that found by Pan et al (2009), though they used a lower substitution percentage. The low values of  t c and E t C obtained with CP is rather surprising.…”

Section: Introductionsupporting

confidence: 78%

“…On the other hand, depending on the pulping process and the raw material yield, the fibers can also be classified as mechanical pulp (MP), c is noticeable, the value of the Young's modulus is low, possibly due to its measurement without an extensometer. The same authors have evaluated the influence of several surface treatments on the thermal, mechanical, and rheological properties of the composite materials (Pan et al 2009). In the same way, Panthapulakkal et al (2006) prepared injection-molded composites using wheat straw MP or TMP, and CP fibers as reinforcement, with PP as the matrix and MAPP as the coupling agent.…”

Section: Introductionmentioning

confidence: 99%

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Research on the Suitability of Organosolv Semi-Chemical Triticale Fibers as Reinforcement for Recycled Hdpe Composites

Mansouri¹,

Pérez²,

Pujadas³

et al. 2012

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The main objective of this research was to study the feasibility of incorporating organosolv semi-chemical triticale fibers as the reinforcing element in recycled high density polyethylene (HDPE). In the first step, triticale fibers were characterized in terms of chemical composition and compared with other biomass species (wheat, rye, softwood, and hardwood). Then, organosolv semi-chemical triticale fibers were prepared by the ethanolamine process. These fibers were characterized in terms of its yield, kappa number, fiber length/diameter ratio, fines, and viscosity; the obtained results were compared with those of eucalypt kraft pulp. In the second step, the prepared fibers were examined as a reinforcing element for recycled HDPE composites. Coupled and noncoupled HDPE composites were prepared and tested for tensile properties. Results showed that with the addition of the coupling agent maleated polyethylene (MAPE), the tensile properties of composites were significantly improved, as compared to non-coupled samples and the plain matrix. Furthermore, the influence of MAPE on the interfacial shear strength (IFSS) was studied. The contributions of both fibers and matrix to the composite strength were also studied. This was possible by the use of a numerical iterative method based on the Bowyer-Bader and Kelly-Tyson equations.

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Section: Introductionsupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Research on the Suitability of Organosolv Semi-Chemical Triticale Fibers as Reinforcement for Recycled Hdpe Composites

Mansouri¹,

Pérez²,

Pujadas³

et al. 2012

BioResources

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show abstract

“…However, composites made of the acetylated wheat straw fiber showed a lower tensile modulus of 1209 MPa than those made of the untreated fiber, likely due to brittleness of the fiber after acetylation, leading to a lower stiffness of the fiber. [16]. The tensile strength of the composites made of MAPP-treated fiber increased from 22.06 MPa to 30.85 MPa.…”

Section: Tensile Properties Of the Compositesmentioning

confidence: 95%

Preparation and Properties of Wheat Straw Fiber-polypropylene Composites. Part II. Investigation of Surface Treatments on the Thermo-mechanical and Rheological Properties of the Composites

Pan

Zhang

Zhou

2009

Journal of Composite Materials

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Composites made of polypropylene (PP) and wheat straw fiber treated by alkalization, acetylation, and maleic anhydride polypropylene (MAPP) were prepared, and the dynamic mechanical, thermal, and rheological properties of the treated composites have been investigated. The PP composites reinforced with the treated wheat straw fiber exhibited higher brittleness. The melt flow studies were carried out at the temperature of 170, 180, and 190 C and shear rate of 0.010.1 s À1 . The PP composites reinforced with the alkalized wheat straw fiber showed the high melt viscosity due to the strong chemical interaction among polymer and wheat straw fiber. The introduction of MAPP to the system increased the flow behavior of the polymer dispersed the wheat straw fiber uniformly, and decreased the melt viscosity. The PP composites introduced by 2 wt% MAPP showed the lowest storage flexural modulus (E 0 ) over the entire temperature range from 25150 C, due to better compatibility between the wheat straw fiber and matrix. The PP composites made of with 20 wt% alkalized and MAPP treated wheat straw fiber showed the highest E 0 . The differential scanning calorimeter (DSC) study revealed that introducing the wheat straw fiber to PP matrix increased the melting temperature and crystallization temperature. The PP composites reinforced with the alkalized and MAPP treated fiber had the highest rate of crystallization as a consequent of the co-effect of alkalization and esterfication.

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“…Afterward, the oxalic acid-treated straw was washed with abundant distilled water for 24 h to leach out the absorbed oxalic acid until neutral pH was reached, followed by oven drying at 105 °C for about 6 h (Pan et al 2009). …”

Section: % Oxalic Acid Treatmentmentioning

confidence: 99%

Influence on the Physical Properties of Wheat Straw via Hydrothermal and Chemical Treatments

Yang

Liu

et al. 2016

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The physical properties of wheat straw treated with hydrothermal and chemical treatments were investigated using an electronic universal testing machine, Fourier transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). The thermal stability of the wheat straw was also investigated using thermogravimetric analysis (TGA). The experimental results showed that the chemical treatment was a main factor governing the enzymatic saccharification of wheat straw. Different treatments of wheat straw had the same mass loss trend. The maximum mass loss occurred in the range between 250 and 400 °C for all straw samples. In this range, the wheat straw treated with NaOH showed an exothermic peak, while samples treated with the other treatments showed an endothermic peak. Chemical treatments disrupted the silicified waxy surface and destroyed the C-O bond. The internal structure of wheat straw treated with NaOH became porous and loose and exposed more accessible surface area of the cellulose to cellulase.

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Preparation and properties of wheat straw fiber‐polypropylene composites. I. Investigation of surface treatments on the wheat straw fiber

Cited by 32 publications

References 26 publications

Research on the Suitability of Organosolv Semi-Chemical Triticale Fibers as Reinforcement for Recycled Hdpe Composites

Research on the Suitability of Organosolv Semi-Chemical Triticale Fibers as Reinforcement for Recycled Hdpe Composites

Preparation and Properties of Wheat Straw Fiber-polypropylene Composites. Part II. Investigation of Surface Treatments on the Thermo-mechanical and Rheological Properties of the Composites

Influence on the Physical Properties of Wheat Straw via Hydrothermal and Chemical Treatments

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