Synthesis and Mechanical Properties of Natural Fiber Reinforced Epoxy/Polyester/Polypropylene Composites: A Review

Sathishkumar, G.; Ibrahim, Mohamed; Akheel, M. Mohamed; Rajkumar, G.; Gopinath, B.; Karpagam, R.; Karthik, P.; Charles, M. Martin; Gautham, G.; Shankar, Gautham

doi:10.1080/15440478.2020.1848723

Cited by 55 publications

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References 134 publications

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“…Composites comprising PP and strands or bast fibers of hemp have already been reported with diverse impacts on mechanical properties [ 17 , 18 ]. For an overview of the most relevant advances in natural fiber-reinforced PP, the reader is referred to recent review articles [ 19 , 20 ]. Many different methods of composite preparation have been reported, such as lay-up, compression molding, injection molding and resin transfer molding.…”

Section: Introductionmentioning

confidence: 99%

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Behavior of the Flexural Strength of Hemp/Polypropylene Composites: Evaluation of the Intrinsic Flexural Strength of Untreated Hemp Strands

et al. 2023

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The growing demand for plant fiber-reinforced composites offers new opportunities to compete against glass fiber (GF)-reinforced composites, but their performance must be assessed, revised, and improved as much as possible. This work reports on the production and the flexural strength of composites from polypropylene (PP) and hemp strands (20–50 wt.%), using maleic anhydride-grafted PP (MAPP) as a compatibilizer. A computational assessment of the reaction between cellulose and MAPP suggested the formation of only one ester bond per maleic anhydride unit as the most stable product. We determined the most favorable MAPP dosage to be 0.06 g per gram of fiber. The maximum enhancement in flexural strength that was attained with this proportion of MAPP was 148%, corresponding to the maximum fiber load. The modified rule of mixtures and the assumption of similar coupling factors for tensile and flexural strength allowed us to estimate the intrinsic flexural strength of hemp strands as 953 ± 116 MPa. While falling short of the values for sized GF (2415 MPa), the reinforcement efficiency parameter of the natural fibers (0.209) was found to be higher than that of GF (0.045).

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Section: Introductionmentioning

confidence: 99%

“…Many different methods of composite preparation have been reported, such as lay-up, compression molding, injection molding and resin transfer molding. The present work opted for injection molding, due to its capability to accept high fiber loads [ 19 ] and its low cost [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Behavior of the Flexural Strength of Hemp/Polypropylene Composites: Evaluation of the Intrinsic Flexural Strength of Untreated Hemp Strands

et al. 2023

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“…Epoxy/jüt (43MPa), Epoxy/Bambu (392 MPa), Epoxy/Pamuk (72,92 MPa) çekme değerlerini vermiştir. [31]Ayrıca % 6 takviye ile yapılan Keten/PLA kompozit malzeme, Keten ipliği/PLA ve nonwoven keten/PLA, sırasıyla (83.0±5.0) ve (151.0±7.0) MPa 'nın çekme değerlerini vermiştir [32]. Bu durum literatür çalışması ile desteklenmiştir.…”

Section: Sem Sonuçlarıunclassified

Çelti̇k Li̇fi̇ Takvi̇yeli̇ Bi̇yo Kompozi̇t Malzemeni̇n Mekani̇k Özelli̇kleri̇ni̇n İncelenmesi̇

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2023

Tekstil Ve Mühendis

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Doğal lif kaynaklı ürünlerden biri çeltik bitkisidir. Trakya bölgesinde yetiştirilen çeltik bitkisi tarladan toplandıktan sonra kalan saplar aylarca tarlada çürüme ve bozunma olmadan bir sonraki ekim işlemine kadar kalabilmektedir. Bitki sapları yakılarak uzaklaştırılmaya çalışılmaktadır. Bu çalışmada bitkisel atıkların ekonomiye ve çevreye kazandırılması amacıyla, enzimatik ön işlem uygulanarak çeltik saplarından lif elde edilmiş ve tarama işlemi ile dokusuz kumaş oluşturulmuştur. Daha sonra sıcak presleme işlemi ile polilaktik asit polimeri kullanılarak biyokompozit malzeme üretilmiştir. Elde edilen kompozit malzemelerin özelikleri çeşitli karakterizasyon yöntemleri ile incelenmiştir. Enzimatik ön işlem sayesinde çeltik lifinde yabancı madde uzaklaştırma ve hidrofilite artışı sağlanmaya çalışılmıştır. Çekme testi sonuçlarına göre; %10 a kadar nonwoven takviyeli biyo kompozit malzemenin mukavemet değerinin azaldığı tespit edilmiştir. PLA'nın cam geçiş sıcaklığı lif içeriği arttıkça azaldığı ve kayıp modülü etkisi hissedilmiştir. Dinamik mekanik analiz sonuçları, 110 °C civarında, PLA'nın soğuk kristalleşmesinin olduğu ve liflerin varlığı ile soğuk kristalleşme ve erime noktası arasında yüksek modül değerleri görülmektedir.

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“…The natural fiber‐reinforced thermoplastic polymer provides extensive application in automotive components, building paneling, low‐cost housing units, packaging, furniture, and toy industry for their excellent specific strength and modulus, low‐carbon footprint, and recyclability. [ 2 ] However, the major drawback of natural fiber is high‐water absorption and poor bonding to polymer matrix. [ 3 ] Natural fibers are hydrophilic, while thermoplastics are hydrophobic which is attributed to weak interfacial bonding between fiber and matrix at the interface.…”

Section: Introductionmentioning

confidence: 99%

Mechanical, thermal and microstructural studies of Bauhinia Vahlii fiber reinforced polypropylene composite

Ray

Das

et al. 2021

Polymer Composites

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Nowadays, the natural fibers reinforced thermoplastic polymers have been increasingly used in various automotive, construction, and packaging industries because of their high modulus, strength, and renewability. In this work, the thermoplastic polymer is reinforced by surface‐modified Bauhinia Vahlii (BV) fiber. The fabrication of composite at 10, 20, and 30 wt% BV fiber loading is done by compression molding technique and characterization of the composite is carried out. The tensile and flexural strength is found to be maximum at 10 wt% BV fiber content, indicating a strong interfacial bond between fiber and matrix as supported by scanning electron microscope of fracture surfaces of the composite. The impact strength and hardness of the BV/polypropylene (PP) composite increases with BV fiber loading. According to the dynamic mechanical analysis results, with rise in BV fiber content in the composite, the storage and loss modulus improved, but tan delta reduced. The thermogravimetric analysis and derivative thermogravimetry inferred that the composite's thermal stability lies between modified BV fiber and PP matrix. The differential scanning calorimetry curve studies the melting and crystallization behavior of the composite. The higher crystallinity index of composite is obtained at 10 wt% BV fiber content supported by tensile strength result. Both hot and cold‐water immersion processes studied the water absorption behavior of the composite. The composite with a higher percentage of fiber absorbs more water and takes less time to reach saturation. Compared to other produced composites and neat PP, it is observed that composites fabricated with 10% BV fiber content have superior characteristics.

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Synthesis and Mechanical Properties of Natural Fiber Reinforced Epoxy/Polyester/Polypropylene Composites: A Review

Cited by 55 publications

References 134 publications

Behavior of the Flexural Strength of Hemp/Polypropylene Composites: Evaluation of the Intrinsic Flexural Strength of Untreated Hemp Strands

Behavior of the Flexural Strength of Hemp/Polypropylene Composites: Evaluation of the Intrinsic Flexural Strength of Untreated Hemp Strands

Çelti̇k Li̇fi̇ Takvi̇yeli̇ Bi̇yo Kompozi̇t Malzemeni̇n Mekani̇k Özelli̇kleri̇ni̇n İncelenmesi̇

Mechanical, thermal and microstructural studies of Bauhinia Vahlii fiber reinforced polypropylene composite

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