Effect of fiber length and loading on the properties of<i>Schumannianthus dichotomus</i>(murta) fiber–reinforced epoxy composites

Barbhuiya, A. Hussain; Ismail, K.

doi:10.1080/1023666x.2016.1139282

Cited by 22 publications

(8 citation statements)

References 17 publications

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“…The shrub is a shade-loving plant and prefers soil with high moisture [25]. Nevertheless, it is commercially grown in the north-eastern parts of Bangladesh and in some parts of India [26]. A substantial proportion of the rural population in the Sylhet region of Bangladesh supports their livelihood by making handicrafts from S. dichotomus [27].…”

Section: Introductionmentioning

confidence: 99%

Phytotoxic Activity and Identification of Phytotoxic Substances from Schumannianthus dichotomus

Rob

Hossen

Iwasaki

et al. 2020

Plants

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The phytotoxic potential of plants and their constituents against other plants is being increasingly investigated as a possible alternative to synthetic herbicides to control weeds in crop fields. In this study, we explored the phytotoxicity and phytotoxic substances of Schumannianthus dichotomus, a perennial wetland shrub native to Bangladesh, India, and Myanmar. Leaf extracts of S. dichotomus exerted strong phytotoxicity against two dicot species, alfalfa and cress, and two monocot species, barnyard grass and Italian ryegrass. A bioassay-driven purification process yielded two phenolic derivatives, syringic acid and methyl syringate. Both constituents significantly inhibited the growth of cress and Italian ryegrass in a concentration-dependent manner. The concentrations required for 50% growth inhibition (I50 value) of the shoot and root growth of cress were 75.8 and 61.3 μM, respectively, for syringic acid, compared with 43.2 and 31.5 μM, respectively, for methyl syringate. Similarly, to suppress the shoot and root growth of Italian rye grass, a greater amount of syringic acid (I50 = 213.7 and 175.9 μM) was needed than methyl syringate (I50 = 140.4 to 130.8 μM). Methyl syringate showed higher phytotoxic potential than syringic acid, and cress showed higher sensitivity to both substances. This study is the first to report on the phytotoxic potential of S. dichotomus and to identify phytotoxic substances from this plant material.

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Section: Introductionmentioning

confidence: 99%

Phytotoxic Activity and Identification of Phytotoxic Substances from Schumannianthus dichotomus

Rob

Hossen

Iwasaki

et al. 2020

Plants

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“…Schumannianthus dichotomus (Murta) fiber supported by epoxy resin composite has excellent mechanical and thermal property and has also stated that optimum fiber loading length and weight percentages are important for achieving the desired characteristics. 24 It has been stated by Sreenivasan et al 17 that the composite properties are very much dependent on the fiber length to produce maximum productive results and that the fiber length must be at least equal to the critical fiber length (lc). Recent literatures indicate that natural fiber composites play a key role in the current era, and lightweight composites are made by using low-density natural fibers.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on dynamic mechanical and thermal characteristics of Coccinia Indica fiber reinforced polyester composites

Balu

Subramani²,

Palaniappan

et al. 2020

Journal of Engineered Fibers and Fabrics

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Due to superior material properties of fiber reinforced composites, they are utilized in many structural fabrications. Even though many studies have been reported about various fiber reinforced composites, it is indeed to find more eco-friendly composites for modern applications. So, developing the new fiber reinforced composites and revealing its mechanical properties are vital. In this examination, the natural fiber reinforced polymer matrix composite was prepared by compression molding method. The natural fiber named as Coccinia Indica was used to fabricate the fiber reinforced composites. The impact of different fiber length on dynamic mechanical properties like loss modulus, storage modulus, and loss of weight in fiber reinforced composites was predicted using dynamic mechanical analysis and thermogravimetric analysis. The outcomes revealed that fiber length of 30 mm shows better values in storage modulus and nominal loss modulus owing to higher interfacial bonding among fiber and matrix. However, in other fiber lengths, the storage modulus depicts poor result and high loss modulus is due to inefficient stress transfer.

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“…The CGFs were extracted from the stem of the plant manually and cut into three different lengths 3, 9 and 15 mm for the use as a reinforcement agent for phenol formaldehyde resin matrix. The resole type Phenol Formaldehyde (PF) liquid resin with the density of 1.3 g/cm 3 and specific gravity of 1.14 was used as a polymer matrix with the cross-linking agent (v) and acidic catalyst (hydrochloric acid). All the chemicals are procured from the POOJA Chemicals, Madurai, Tamilnadu, India.…”

Section: Experimental Details 21 Materialsmentioning

confidence: 99%

“…The demand for new fiber materials with better properties to be used in various fields of applications such as automobile, electronics and structural are growing which led to the development of better polymer composites. The polymer composites reinforced with better reinforcement agents can provide, the better physical and mechanical properties 3 . Among the various plants based natural cellulose fibers, CG, a family of the Asclepiadaceae, is a traditional medicinal plant with unique properties which yields a durable fiber (Bowstring of India) useful for ropes, carpets, fishing nets, and sewing thread.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Randomly Oriented Calotropis Gigantea Fiber-Reinforced Phenol Formaldehyde Biocomposites

Athijayamani¹,

Sekar²,

Sidhardhan

et al. 2017

JAC

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Mechanical properties such as tensile, flexural and impact, of randomly oriented Calotropis Gigantea Fiber (CGF) -reinforced Phenol Formaldehyde (PF) biocomposites were studied based on the five different fiber loadings (10, 20, 30, 40, and 50 vol%) and three different fiber lengths (3, 9, and 15 mm). The critical fiber length and optimum fiber loading were identified with the maximum level of mechanical properties in this composite. The fractured surfaces of composites after testing were studied by scanning electron microscope (SEM). The results revealed that the addition of CGFs is improving the mechanical properties of the PF composite. The properties of composites reach the properties of the neat resin sample at 20 vol% of all the cases. The critical fiber length and the optimum fiber loading to obtain the maximum mechanical properties were identified as 9 mm and 40 vol% respectively. Experimental tensile property values were compared with theoretical values and found to be in good agreement.

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Effect of fiber length and loading on the properties ofSchumannianthus dichotomus(murta) fiber–reinforced epoxy composites

Cited by 22 publications

References 17 publications

Phytotoxic Activity and Identification of Phytotoxic Substances from Schumannianthus dichotomus

Phytotoxic Activity and Identification of Phytotoxic Substances from Schumannianthus dichotomus

Experimental investigation on dynamic mechanical and thermal characteristics of Coccinia Indica fiber reinforced polyester composites

Mechanical Properties of Randomly Oriented Calotropis Gigantea Fiber-Reinforced Phenol Formaldehyde Biocomposites

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