The effects of the temperature on the mechanical properties of natural yarns

Smail, Y. Ben; Moumen, A. El; Lmai, F.; Imad, A.

doi:10.1051/matecconf/201928603003

Cited by 6 publications

(7 citation statements)

References 7 publications

(7 reference statements)

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“…Owing to their low cost, light-weight, biodegradability, low density, and good physical and mechanical characteristics, [9][10][11] researchers are investigating the development of plant fibers instead carbon and glass for use in the reinforcement of composite materials for various applications such as automotive, packaging, building, and furniture. 12 However, these materials exhibit a considerable diversity, and both their mechanical and thermal properties are relatively unknown.…”

Section: Introductionmentioning

confidence: 99%

Characterization and analysis of novel natural cellulosic fiber extracted from Strelitzia reginae plant

Lemita

Deghboudj

Rokbi

et al. 2021

Journal of Composite Materials

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The purpose of this study is to evaluate in detail the usability of new cellulosic fibers extracted from the stem of the plant Strelitzia reginae, as a potential reinforcement for polymer composites. The morphological, physical, thermal, and mechanical properties of fibers were addressed for the first time in this paper. Both untreated and alkali-treated fibers were characterized, using scanning electron microscopy (SEM), Fourier-transform infrared, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), optical microscope, and X-ray diffraction (XRD) and applying tensile test for determining the mechanical behavior. For both fiber treated at one hour (T1H) and at four hours (T4H), the stem anatomy and fiber SEM micrographs showed a strong presence of fiber cells. Thermogravimetry and DSC showed that the fiber was thermally stable up to 233°C for untreated fiber, 254 and 240°C, respectively, In single-fiber tensile tests, it was observed that the fibers extracted from the stem of Strelitzia reginae were strong. The mean values of Young’s modulus exhibited by untreated fibers and treated (T1H) and (T4H) are, respectively, 9.89 GPa, 12.08, and 18.39 GPa. Also mean values of tensile strength are 271.79, 306.23, and 421.39 MPa. The XRD reveals the presence of cellulose with a Crystallinity Index of 70% for raw fiber and 72% for the treated one. Fourier-transform infrared analysis well demonstrated the effect of chemical treatment. It can be concluded from the results of all above experiments that the Strelitzia reginae fibers (SR) could serve as a possible reinforcement in composite materials.

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Section: Introductionmentioning

confidence: 99%

Characterization and analysis of novel natural cellulosic fiber extracted from Strelitzia reginae plant

Lemita

Deghboudj

Rokbi

et al. 2021

Journal of Composite Materials

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“…For tensile testing results, UT yarns show relatively lower tensile strength of ⁓42MPa, tensile modulus of ⁓324 MPa and tensile strain of ⁓7.7%, Figure 5d-f, which is agreement with previous studies. (Sharif Ullah et al 2017;Bensmail et al 2019) These lower mechanical properties of UT is mainly due to the waxy cementing layer on the fibre surface composed of low molecular weight fats, lignin, pectin and hemicelluloses. (Sarker et al 2018) After alkali treatment the value of tensile strength, tensile modulus and tensile strain increase to ⁓70 MPa, ⁓290 MPa and 9.7%, respectively for AT yarns (Figure 5d and Table S5, Supporting Information ).…”

Section: Tensile Propertiesmentioning

confidence: 99%

“…(Sharif Ullah et al 2017;Bensmail et al 2019). In addition, the strain to failure of jute yarn was found to be limited ~6.0-7.5 % with a large scattering in the value in those studies (Sharif Ullah et al 2017;Bensmail et al 2019). Recently, few studies have been carried out on the nano-modification of natural jute yarns to increase the strength and interfacial performance of the composites (Foruzanmehr et al 2015;Li et al 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Such a lower tensile strength is mainly due to the fibre impurities and the twist imparted to the fibre during spinning into yarn. (Sharif Ullah et al 2017;Bensmail et al 2019). In addition, the strain to failure of jute yarn was found to be limited ~6.0-7.5 % with a large scattering in the value in those studies (Sharif Ullah et al 2017;Bensmail et al 2019).…”

Section: Introductionmentioning

confidence: 99%

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Structural Performance of Chemically Modified Natural Jute Yarn for Strength Demanding Composite Applications

Ashadujjaman

Saifullah

Shah

et al. 2021

Preprint

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Manufacturing natural based high-performance composites is becoming a greater interest to the composite manufacturers and to their end users due to their bio-degredability,low cost and availability. Yarn based textile architecture is commonly used in manufacturing these composites due to their excellent formability. However, for using natural based yarn as a reinforcing architectures in high load bearing structural composite applications, a significant improvement in mechanical performance is required. Particularly, jute fibre yarn suffers with poor mechanical properties due to the presence of fibrillar network, polysacharides and other impurities in the fibre. For achieving this, we use aqueous glycine treatment (10%, W/V) on alkali(0.5 %, W/V) and untreated jute yarns for the first time. The glycine treatment on alkali treated jute yarns (ATG) shows a huge improvement in tensile strength and strain values by almost ⁓105% and ⁓50 % respectively compared to untreated jute yarns (UT) because of the strong interactions and bonds developed between glycine, alkali and jute yarns. It is believed that the newly developed glycine treated jute yarns will be helpful to promote jute yarns in composite industries where load-bearing is primary requirement and replace their synthetic counterparts.

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“…In order to increase the elongation, studies using chemicals, such as liquid ammonia [7] and sodium hydroxide [8] have succeeded, however, with the effect of decreased or, in the best case, sustained tenacity. Tensile testing of jute yarn at elevated temperatures has shown decreased tenacity with increased temperature [9]. Those tensile tests were done under dry conditions, and the humidity loss was reported as a possible explanation for the loss in stress.…”

Section: Introductionmentioning

confidence: 99%

Effects of Microwave Treatment in Immersed Conditions on the Mechanical Properties of Jute Yarn

Syrén

Peterson

Kadi

2021

Fibers

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The versatile bast fiber jute has environmental benefits compared to glass fibers. However, for jute to be used in a composite, the fiber properties need to be altered. This study aims to improve the mechanical properties of jute yarn to make it more suitable for technical applications as a composite. To alter its mechanical properties, jute yarn was immersed in water during microwave treatment. The time and power of the microwave settings differed between runs. Two states of the yarn were tested: fastened and un-fastened. Tensile testing was used at the yarn and fiber level, followed by Fourier-transform infrared spectroscopy (FTIR) and microscopy. The treatment result demonstrated the ability to increase the elongation of the jute yarn by 70%. The tenacity was also increased by 34% in the fastened state and 20% in the un-fastened state. FTIR showed that no change in the molecular structure occurred. The treatments resulted in a change of yarn thickness depending on the state of the yarn. The results indicate that microwave treatment can be used to make jute more suitable for technical applications depending on the microwave treatment parameters.

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The effects of the temperature on the mechanical properties of natural yarns

Cited by 6 publications

References 7 publications

Characterization and analysis of novel natural cellulosic fiber extracted from Strelitzia reginae plant

Characterization and analysis of novel natural cellulosic fiber extracted from Strelitzia reginae plant

Structural Performance of Chemically Modified Natural Jute Yarn for Strength Demanding Composite Applications

Effects of Microwave Treatment in Immersed Conditions on the Mechanical Properties of Jute Yarn

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