Hydroscopic and Mechanical Properties Performance Analysis of Rice Husk Powder/PLA Composites

Hua, Jin; Zhao, Zhi Min; Wei, Yu; Wei, Ben Zheng

doi:10.4028/www.scientific.net/amr.230-232.1231

Cited by 8 publications

(4 citation statements)

References 3 publications

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“…Consequently, the heat treatment did not provide any improvement to the hardness with the fi ller concentration of 10 % and 30 %. Similar results for wood reinforced polymer composites were also observed by Hua et al (2011), Kord (2011), Medupin et al (2013) and Sathishkumar (2014).…”

Section: Resultssupporting

confidence: 86%

Heat-Treated Wood Reinforced High Density Polyethylene Composites

et al. 2021

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This study investigated the effect of untreated and heat-treated ash and black pine wood flour concentrations on the selected properties of high density polyethylene (HDPE) composites. HDPE and wood flour were used as thermoplastic matrix and filler, respectively. The blends of HDPE and wood fl our were compounded using single screw extruder and test samples were prepared through injection molding. Mechanical properties like tensile strength (TS), tensile modulus (TM), elongation at break (EatB), fl exural strength (FS), fl exural modulus (FM) and impact strength (IS) of manufactured composites were determined. Wood fl our concentrations have significantly increased density, FS, TM and FM and hardness of composites while reducing TS, EatB and IS. Heat-treated ash and black pine fl our reinforced HDPE composites had higher mechanical properties than untreated ones. Composites showed two main decomposition peaks; one coming from ash wood flour (353-370 °C) and black pine wood fl our (373-376 °C), the second one from HDPE degradation (469-490 °C). SEM images showed improved dispersion of heat-treated ash and black pine wood flour. The obtained results showed that both the untreated and heat-treated ash/black pine wood flour have an important potential in the manufacture of HDPE composites.

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Section: Resultssupporting

confidence: 86%

Heat-Treated Wood Reinforced High Density Polyethylene Composites

et al. 2021

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“…In research by Hua et al [50], the rice husk powder (RHP) was modified by PLA using melt-blending technique, and MAPP was used as coupling agent. The mechanical properties, water absorbability of RHP/PLA composites, and the relations between these properties and microscopic characteristics were investigated.…”

Section: Rice Husk/polylactic Acid Compositesmentioning

confidence: 99%

Rice Husk Filled Polymer Composites

Arjmandi

Hassan

Majeed

et al. 2015

International Journal of Polymer Science

147

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Natural fibers from agricultural wastes are finding their importance in the polymer industry due to the many advantages such as their light weight, low cost and being environmentally friendly. Rice husk (RH) is a natural sheath that forms around rice grains during their growth. As a type of natural fiber obtained from agroindustrial waste, RH can be used as filler in composites materials in various polymer matrices. This review paper is aimed at highlighting previous works of RH filled polymer composites to provide information for applications and further research in this area. Based on the information gathered, application of RH filled composites as alternative materials in building and construction is highly plausible with both light weight and low cost being their main driving forces. However, further investigations on physical and chemical treatment to further improve the interfacial adhesion with polymeric matrix are needed as fiber-polymer interaction is crucial in determining the final composite properties. Better understanding on how the used polymer blends as the matrix and secondary fillers may affect the properties would provide interesting areas to be explored.

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“…As a result, compatibility of the RH‐matrix was developed leading to enhanced mechanical properties of the composites. It was found that RH can improve the maximum tolerable, tension, tensile strength, and water absorptivity of PLA/RH composites 19 . By investigation of its complex dielectric permittivity range and loss tangent, Zawawi et al 20 confirmed that RH/PLA composites can be used for microwave applications.…”

Section: Introductionmentioning

confidence: 98%

Enhanced biodegradation and processability of biodegradable package from poly(lactic acid)/poly(butylene succinate)/rice‐husk green composites

Sirichalarmkul

Kaewpirom

2021

J of Applied Polymer Sci

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This work aims to study the possibility to process PLA/PBS/RH green composites into hexagonal plant‐pots employing a large‐scale industrial operation using injection molding. Green composites based on poly(lactic acid) (PLA), poly(butylene succinate) (PBS), and rice husk (RH) with various RH contents (10–30%wt.) were produced successfully using a twin‐screw extruder. The compatibility of RH‐matrix was improved by chemical surface modifications using a coupling agent. RH was analyzed as an effective filler for PLA to develop green composites with low cost, high biodegradability, improved processability, and comparable mechanical properties as unfilled PLA. With increasing RH content, tensile modulus of the composites increased gradually. The addition of PBS, at PLA/PBS ratio of 60/40, improved the elongation at break and impact strength of PLARH30 by 55% and 7.1%, respectively. The suitable processing temperatures for PLA decreased from 220–230°C to 170–180°C when 30%wt. RH was composited into PLA matrix and were further reduced when PBS was applied. After biodegradation via either enzymatic degradation or hydrolysis, surface erosion with a large number of voids, mass loss, and the substantial decrease in tensile strength of all the composites were observed. In addition, the biodegradation of the composites has been improved by the addition of either RH or PBS.

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Hydroscopic and Mechanical Properties Performance Analysis of Rice Husk Powder/PLA Composites

Cited by 8 publications

References 3 publications

Heat-Treated Wood Reinforced High Density Polyethylene Composites

Heat-Treated Wood Reinforced High Density Polyethylene Composites

Rice Husk Filled Polymer Composites

Enhanced biodegradation and processability of biodegradable package from poly(lactic acid)/poly(butylene succinate)/rice‐husk green composites

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