Synthesis and evaluation of mechanical properties for coconut fiber composites-A review

Inovasi baru serat dari sabut kelapa dimanfaatkan untuk meningkatkan nilai ekonomis dari serat sabut kelapa, oleh karena itu dirancanglah pendayagunaan serat dari sabut kelapa untuk penguat komposit dengan material serat alam yang biodegradable. Hal ini untuk mendukung penggunaan komposit yang ramah terhadap lingkungan dan mengurangi penggunaan material komposit serat sintetis yang polutan. Tujuan penelitian adalah menganalisis sifat mekanik pada komposit serat alam bermaterial serat dari sabut kelapa yang ramah lingkungan. Metode penelitian pembuatan komposit berpenguat serat dari sabut kelapa dilakukan treatment NaOH 15% selama 5 jam dan fraksi volume serat 10 %, 15 %, dan 20 %. Komposit serat dari sabut kelapa dengan matriks UPRs 157 BQTN dengan hardener MEXPO. Pengujian mekanik dilakukan uji bending menggunakan standar ASTM D790 dan uji impak menggunakan standar ASTM D5941. Pengujian impak komposit serat alam menunjukkan ketangguhan impak komposit pada fraksi volume serat 20% dengan nilai 0.017588J/mm2. Hasil pengujian menunjukkan peningkatan fraksi volume serta berpengaruh terhadap peningkatan kekuatan bending komposit serat dari sabut kelapa dengan kekuatan optimum bending pada fraksi volume serat 10% dengan nilai 44,33N/mm2. Hal ini menunjukkan peningkatan fraksi volume serat dengan perendaman NaOH 15% akan meningkatkan sifat mekanik bending dan impak komposit. Perendaman NaOH memberikan pengaruh daya serap sabut kelapa terhadap matrik Unsaturated Polyester yang dapat meningkatkan daya rekat antara penguat serat dengan matrik sehingga meningkatkan sifat mekanik bending dan impak komposit. ABSTRACT The innovation of coco fiber is used to increase the economic value of coconut coir, therefore the utilization of coconut fiber for reinforcing composites with biodegradable natural fiber material is designed. This is to support the use of composites that are friendly to the environment and reduce the use of pollutant synthetic fiber composite materials. The research objective was to analyze the mechanical properties of natural fiber composites with environmentally friendly coconut fiber as material. The research method of making fiber-reinforced composites from coconut coir was carried out by 15% NaOH treatment for 5 hours and a fiber volume fraction of 10%, 15%, and 20%. Composite fiber from coconut coir with UPRs 157 BQTN matrix with MEXPO hardener. Mechanical testing is carried out using the ASTM D790 standard and the impact test using the ASTM D5941 standard. The impact test of natural fiber composites showed the impact toughness of the composite at a fiber volume fraction of 20% with a value of 0.017588 J/ mm2. The test results showed an increase in volume fraction and an effect on the increase in the bending strength of coconut fiber composites with the optimum bending strength at a fiber volume fraction of 10% with a value of 44.33N /mm2. This shows that the increase in fiber volume fraction by immersion in 15% NaOH will increase the bending mechanical properties and the impact of the composite. Soaking NaOH has an effect on the absorption power of coconut coir on the Unsaturated Polyester matrix which can increase the adhesion between the fiber reinforcement and the matrix thereby increasing the bending mechanical properties and impact of the composite.

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Improved static and dynamic mechanical properties of multiscale bucky paper interleaved Kevlar fiber composites

Carbon ◽

10.1016/j.carbon.2019.06.055 ◽

2019 ◽

Vol 152 ◽

pp. 631-642 ◽

Cited By ~ 10

Author(s):

Sushant Sharma ◽

S.R. Dhakate ◽

Abhijit Majumdar ◽

Bhanu Pratap Singh

Keyword(s):

Mechanical Properties ◽

Fiber Composites ◽

Dynamic Mechanical Properties ◽

Dynamic Mechanical ◽

Kevlar Fiber ◽

Bucky Paper

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Processing and determination of mechanical properties of Prosopis juliflora bark, banana and coconut fiber reinforced hybrid bio composites for an engineering field

Composites Science and Technology ◽

10.1016/j.compscitech.2021.108695 ◽

2021 ◽

Vol 208 ◽

pp. 108695 ◽

Cited By ~ 1

Author(s):

S. Sathees Kumar ◽

V. Mugesh Raja

Keyword(s):

Mechanical Properties ◽

Prosopis Juliflora ◽

Fiber Reinforced ◽

Coconut Fiber

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Effect of multiscale reinforcement by fiber surface treatment with polyvinyl alcohol/graphene oxide/oxidized carbon nanotubes on the mechanical properties of reinforced hybrid fiber composites

Composites Science and Technology ◽

10.1016/j.compscitech.2020.108634 ◽

2021 ◽

Vol 204 ◽

pp. 108634

Author(s):

Yuxin He ◽

Qiuyu Chen ◽

Dongyang Wu ◽

Mengyang Zhou ◽

Tengfei Wang ◽

...

Keyword(s):

Mechanical Properties ◽

Carbon Nanotubes ◽

Graphene Oxide ◽

Polyvinyl Alcohol ◽

Fiber Surface ◽

Fiber Composites ◽

Hybrid Fiber ◽

Oxidized Carbon ◽

Oxidized Carbon Nanotubes ◽

Fiber Surface Treatment

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Valorization of Invasive Plants from Macaronesia as Filler Materials in the Production of Natural Fiber Composites by Rotational Molding

Polymers ◽

10.3390/polym13132220 ◽

2021 ◽

Vol 13 (13) ◽

pp. 2220

Author(s):

Zaida Ortega ◽

Francisco Romero ◽

Rubén Paz ◽

Luis Suárez ◽

Antonio Nizardo Benítez ◽

...

Keyword(s):

Mechanical Properties ◽

Invasive Plant ◽

Natural Fiber ◽

Ricinus Communis ◽

Local Level ◽

Natural Fibers ◽

Fiber Composites ◽

Filler Materials ◽

Natural Fiber Composites ◽

Rotational Molding

This paper compares the mechanical properties of different natural fiber composites produced by rotational molding as a way of waste valorization from campaigns to control invasive plant species in Macaronesia. Rotomolded parts produced with polymeric matrices (polyethylene) and filled with up to 20% by weight of cellulosic fibers obtained from Arundo donax L., Pennisetum setaceum, and Ricinus communis plants were characterized in terms of tensile, flexural, and impact strength. It was found that the sieving of natural fibers allowed for their introduction in higher loadings, from 10 (for un-sieved material) to 20%; fiber size greatly affected the mechanical properties of the final parts, although some combinations were proven not to reduce the mechanical properties of the neat resin. This study is a first approach to the valorization of residues obtained from periodic campaigns of the control of invasive species performed by public authorities, usually at the local level. It is important to highlight that the main objective of this research did not focus on economically profitable activity; instead, it was focused on the reduction of wastes to be disposed from ecosystem maintenance actions and the investment of potential income into preservation policies.

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