Papers by Keyword: Corn Straw Fiber

Abstract: In this paper, the effect of simulated seawater on properties of corn straw fibers (CSF) reinforced polypropylene composites was studied. Firstly, CSF was modified with nano-TiO₂ particles, and then the modified CSF reinforced polypropylene (PP) composite was prepared. The flexural property and the microstructure of the composites before and after soaking simulated seawater for 21 days were investigated. The results showed that the simulated seawater in short-term immersion could play a role in plasticizing interface and improve the flexural property of CSF/PP composite. After 21 days of simulated seawater immersion, the flexural strength of CS/PP was increased by 18.00%. The modification of TiO₂-CSF could improve the flexural property of CSF/PP composite. When the addition of TiO₂ was 4 wt.%, the flexural strength reached 44.91 MPa, increased by 17.54% compared with that of unmodified composite.

Abstract: Wood plastic composite (WPC) has been rapidly developed because of its environmental friendliness and sustainability. In order to improve the interfacial compatibility between plant fiber and polypropylene (PP) matrix, three different cross-linking modification methods were used to treat corn straw fiber (CSF). These methods were glutaraldehyde/chitosan (GA/CS) crosslinking modification, KH560/chitosan crosslinking modification and glutaraldehyde/polyvinyl alcohol (GA/PVA) crosslinking modification. The characterization and the mechanical analysis of WPC showed that different cross-linking methods have different morphology on the surface of CSF. Compared with CSF-PP, the bending strength of GA/CS-CSF-PP and GA/PVA-CSF-PP were increased by 11.1% and 16.7%, respectively. This study provided appropriate methods to improve the interface compatibility between plant fiber and resin matrix.

Abstract: The paper describes the production and the mechanical characteristics of composites made completely from renewable raw materials, the corn straw fiber and the biodegradable plastic, poly(lactic acid). The effect of straw fiber content on the mechanical properties of the composites was studied and the optimum mass fraction was 15%. To enhance the mechanical properties of the composites, two different methods were tested. Maleic anhydride as the compatilizer was introduced into the composites but the changes of the mechanical properties were small. While the other method, pre-treatment for straw fiber before blending, the mechanical properties increased obviously. The tensile strength and the impact strength were 35.6 MPa and 1.67 kJ/m2, respectively.

Abstract: The effectiveness of corn straw Fiber, organic polymer latexes, organic polymer latexes and corn straw Fiber blending on vibration damping properties of cement-based materials were studied by filling organic polymer latexes, and corn straw Fiber. The functional mechanisms of various fillers were discussed. The experimental results showed that the vibration damping ratio of cement-based materials with organic polymer latexes is 149.77% higher than that of pure cement-based materials, the vibration damping ratio of cement-based materials with corn straw fiber is 152.58% higher than that of pure cement-based materials, the vibration damping ratio of cement-based materials with organic polymer latexes and fibers blending is 191.08%, also higher than that of pure cement-based materials. The impact of corn straw Fiber and polymer latexes modification on the microstructure and mechanisms were analyzed by FTIR and SEM.

Abstract: In this paper, we have studied the hot forming process of composites made by polylactic acid (PLA) and corn straw fiber. In order to obtain the composite cushioning material with ideal density and expansion ratio, the parameters of processing was optimized. It showed that the optimum condition as follows: the hot-press time was 5min, the pressure was 15MPa and the temperature was 200°C. The structure of the composite was characterized by FTIR.

Abstract: A static compressive model and a dynamic compressive model have been constructed based on Sherwood-Frost’s constitutive model for a corn straw fiber reinforced composite cushioning packaging material. In deriving the models, material density, shape function, strain and strain ratio are considered. The validity of models has been verified by static compressive and dynamic impact testing. The proposed models will provide important theoretic guideline for designing this kind of cushioning material.

Abstract: In order to improve the mechanical performance of straw fiber reinforced gypsum composite materials, corn straw fiber was modified by alkaline treatment and chemical coating treatment, the influence of different surface modification treatment on mechanical performance of gypsum composite material was studied, and the mechanism of surface modification was discussed. The results indicated that: surface modification treatments could improve the interfacial bonding between straw fiber and desulfurization gypsum, and enhance mechanical performance of composite materials; comparing different treatments, the acrylic chemical coating treatment could enhance the strength of composite materials more outstandingly than other treatments.