Mechanical and biodegradation properties of bamboo fiber‐reinforced starch/polypropylene biodegradable composites

Yang, Feiwen; Long, Haibo; Xie, Baojun; Zhou, Wuyi; Luo, Ying; Zhang, Chaoqun; Dong, Xiaoting

doi:10.1002/app.48694

Cited by 29 publications

(21 citation statements)

References 30 publications

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“…Thermal stability and biodegradability of matrix can be improved with the addition of bamboo fiber as reported by Ref. 33 who reported improved flexural strength, water absorption characteristics. Decreased in weight loss was observed when the samples were buried in the soil.…”

Section: Introductionmentioning

confidence: 75%

Experimental evaluation of bamboo fiber/particulate coconut shell hybrid PVC composite

Adediran

Akinwande

Balogun

et al. 2021

Sci Rep

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Bamboo fibers (BF) treated in 1.3 Molar NaOH and particulate coconut shell (PCS) sieved to − 45 µm were incorporated into polyvinyl chloride (PVC) matrix towards improving the properties of PVC composite for ceiling boards and insulating pipes which sags and degrade with time needing improvement in properties. The process was carried out via compression moulding applying 0.2 kPa pressure and carried out at a temperature of 170 °C. Composites developed were grouped according to their composition. Groups A, B, C, and D were infused with 2, 4, 6 and 8 wt% PCS at constant amount, respectively. Each group was intermixed with a varying proportions of BF (0–30 wt% at 5% interval). Tests carried out on the samples produced revealed that the yield strength, modulus of elasticity, flexural strength, modulus of rupture were enhanced with increasing BF proportion from 0 to 30 wt% BF at 2 wt% constant PCS input. Thermal and electrical properties trended downward as the fiber content reduced even as the hardness was enhanced with PCS/BF intermix which was also reflected in the wear loss index. Impact strength was highest on the infix of 4 wt% PCS and 15 wt% BF. Compressive strength was better boasted with increasing fiber and PCS amount but 8 wt% PCS amounted to depreciation in trend. It was generally observed that PCS performed optimally at 2 wt% incorporation while beyond that resulted in lowering of strength. Blending of the two variable inputs; 0–30 wt% BF and 2 wt% PCS presented better enhancement in properties.

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Section: Introductionmentioning

confidence: 75%

Experimental evaluation of bamboo fiber/particulate coconut shell hybrid PVC composite

Adediran

Akinwande

Balogun

et al. 2021

Sci Rep

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“…The rPPSD composites were buried at a depth of 2 cm in a mixture of 50% sand and 50% black humus soil at ambient temperature [ 45 , 46 ]. The relative humidity of the soil was about 50–60%.…”

Section: Methodsmentioning

confidence: 99%

“…Before weighing, the composites were removed from the soil and washed with distilled water. The weight loss of the composites buried in soil was obtained using Equation (3) [ 45 , 46 ]. Here, M 1 and M 2 represent the weight of the composites before and after soil burial, respectively.…”

Section: Methodsmentioning

confidence: 99%

Preparation and Characterisation of Wood Polymer Composites Using Sustainable Raw Materials

et al. 2022

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In recent years, composites consisting of polymers and cellulosic materials have attracted increasing research attention. Polypropylene (PP) is among the most common polymer types found in excavated waste from landfills. Moreover, wood waste generated from wood products manufacturing such as sawdust (SD) offers a good potential for the fabrication of composite materials, and it is readily available in the environment. In this paper, wood polymer composites (WPC) consisting of recycled PP (rPP) and (SD) were prepared and characterised. A range of mechanical properties, including tensile strength, flexural properties, creep and hardness were studied, along with morphology, thermal properties, water degradation and contact angle. The results showed that the mechanical and thermal properties of rPP increased with an increase in 40 wt% of the SD content. Furthermore, the SD content significantly influenced the water uptake of the composites. Time–temperature superposition (TTS) was applied to predict the long-term mechanical performance from short-term accelerated creep tests at a range of elevated temperatures. The short-term creep test showed efficient homogeneity between the fillers and matrix with increasing temperature. The produced wood polymer composites displayed a comparable physical property to virgin polymer and wood and could potentially be used for various structural materials.

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“…The weight loss rate increased in the first 21 days, from 10.7% on Day 7 to 25.9% on Day 21. This could be due to the loss of the bound water in the sample due to the interaction between the environment and microorganisms, as well as the fact that such easily decomposed components with high hygroscopicity, such as tapioca starch and hemicellulose, were decomposed by microorganisms [34]. From Day 21 to Day 34, the weight loss rate increased and was 28.1% (Day 34).…”

Section: Weight Lossmentioning

confidence: 99%

“…On the one hand, the microbes tried to adapt to the environment and utilize the films as the sole carbon source to grow and multiply. This stage could be referred to as the lag phase and the logarithmic growth phase of the microbes [34]. On the other hand, the decay was relatively slow due to the tight structure of bamboo fibers.…”

Section: Weight Lossmentioning

confidence: 99%

Degradation Characteristics of Environment-Friendly Bamboo Fiber Lunch Box Buried in the Soil

Jiang

Wang

Chen

et al. 2022

Forests

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The research on the development of lunch boxes made of clean, environment-friendly, and naturally degradable plant fibers has attracted enormous attention. A bamboo fiber lunch box prepared by the clean and efficient steam explosion method has the advantages of good stiffness, water and oil resistance, and easy degradation. The purpose of this study was to investigate the degradation behavior of the environment-friendly bamboo fiber lunch box under indoor soil burial, as represented by the changes in physical properties, mechanical strength, chemical components, morphological structure, and so on. The results showed that: with the extension of the burial time, the weight loss increased rapidly from slowly to quickly; the boxes were completely degraded in the soil on the 70th day; the microorganisms in the soil first decomposed the tapioca starch, hemicellulose, and cellulose in the lunch box, and finally decomposed the lignin; the residual debris in the soil was further decomposed into CO2, H2O, and inorganic salts. In short, the degradation process of the lunch box mainly included the following stages: stage I: the increase in apparent roughness, the generation of microcracks, the rapid increase in weight loss, and the breakdown of starch and hemicellulose; stage II: the slow increase in the weight loss rate of the box fragmentation, the rapid decay of the mechanical strength, and the cellulose decomposition; stage III: the decomposition of lignin, the complete degradation of the debris, and the integration with the soil.

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Mechanical and biodegradation properties of bamboo fiber‐reinforced starch/polypropylene biodegradable composites

Cited by 29 publications

References 30 publications

Experimental evaluation of bamboo fiber/particulate coconut shell hybrid PVC composite

Experimental evaluation of bamboo fiber/particulate coconut shell hybrid PVC composite

Preparation and Characterisation of Wood Polymer Composites Using Sustainable Raw Materials

Degradation Characteristics of Environment-Friendly Bamboo Fiber Lunch Box Buried in the Soil

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