Properties Of Jute Fiber Research Articles

Changes in composition, structure, and properties of jute fibers after chemical treatments

The composition, structure, physicochemical properties, and optical properties of the raw jute and the treated jute were studied in this work. The results of FT-IR and SEM indicated that both alkali scouring and hydrogen peroxide bleaching exhibited good ability to remove non-cellulose materials, and the results were further confirmed by the composition analysis. Changes in fineness and moisture regain were obviously affected by the degree of non-cellulose removal. The XRD results showed that there was no crystalline transformation of the crystalline structure when the jute was treated under the applied condition. However, the crystallinity index of all the treated samples increased in comparison with the raw jute, which induced the change of mechanical properties. The brightness index and the whiteness index were greatly affected by bleaching rather than alkali scouring. Furthermore, there was a formidable decrease in the yellowness index when the jute was bleached.

J0407-2-1 ジュート繊維強化グリーンコンポジットの成形条件及び強度特性(バイオマス由来材料の成形加工と特性評価(2))

J0407-2-1 ジュート繊維強化グリーンコンポジットの成形条件及び強度特性(バイオマス由来材料の成形加工と特性評価(2))

Effect of Glycol and Acrylamide Treatments of Jute Fibre on its Processibility

ABSTRACT Changes in textile-related properties of jute fibre subjected to (a) controlled/limited oxidation using K2S2O8 and/or NaIO4 and subsequently to (b) treatment with monomeric/oligomeric glycols and with acrylamide under specified condition were studied and reported in our earlier communication. In the present part of the work, the process performances of the chemically modified jute fibres obtained from the above mentioned treatments were further studied to assess their process performance during yarn making, including spinnability and property performance of the resultant yarns. Studies on process performance for yarn making, including spinnability, indicate that the specified treatment with a mixture of 4% PEG 1500 and 4% acrylamide and also with 8% ethylene glycol on jute fibre presoaked with 0.5% K2S2O8 produced a better process performance, showing net advantages in respect of (1) improved energy efficiency and lower fibre droppage during carding, (2) trouble free spinning (zero to low-end breakage rate), (3) better yarn structure (showing enhanced packing fraction and lower structural irregularities), and (4) improved balance in important yarn properties viz, tenacity, initial modulus, flexural rigidity, quality ratio, work of rupture, and resistance to microbial attack.

Effects of Glycol and Acrylamide Treatments on Textile-Related Properties of Jute Fibre

ABSTRACT Changes in textile related properties of jute fibre subjected to (a) limited oxidation using K2S2O8 or NaIO4 and subsequently to (b) treatment with monomeric/oligomeric glycols or acrylamide under specified condition were studied. Comparison of observed effects indicated that presoaking of jute fibre at room temperature with 0.5% aqueous K2S2O8 followed by an exposure to U-V light for 15 min and subsequent treatment with (i) 8% ethylene glycol, (ii) 8% acrylamide and (iii) a mixture of 4% polyethylene glycol of molecular weight 1500(i.e. PEG 1500) and 4% acrylamide produced mentionworthy improvement in textile related properties in respect of weight gain, moisture absorption, linear density, tenacity retention, coefficient of friction, flexural rigidity, surface reflectance, whiteness index, yellowness index and brightness index. Treatment of oxy-jute (K2S2O8 –treated) fibre by 1:1 mixture of acrylamide and PEG under the prescribed optimal condition appears to produce the most encouraging results as far as tenacity retention, surface appeance and colour parameters including brightness and surface reflectance of jute fibre are concerned.

1539 ジュート繊維強化グリーンコンポジットの強度特性に及ぼす加熱処理の影響(S11-2 バイオマス由来材料の成形加工と特性評価(2)天然繊維の加熱・化学処理,高温特性とグリーンコンポジット,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

1539 ジュート繊維強化グリーンコンポジットの強度特性に及ぼす加熱処理の影響(S11-2 バイオマス由来材料の成形加工と特性評価(2)天然繊維の加熱・化学処理,高温特性とグリーンコンポジット,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

Effect of Compatibiliser and Fibre Content on Jute Fibre Reinforced HDPE/EPDM: A Dynamic Mechanical and Thermal Study

The thermal and dynamic mechanical properties of jute fibre reinforced high density polyethylene (HDPE)/ ethylene-propylene-diene terpolymer (EPDM) composites were studied. The fibre loading was varied between 10 and 30 wt%, and at each fibre loading, four compatibiliser doses were used. Dynamic parameters (storage flexural modulus (E'), loss flexural modulus (E”), loss factor or damping efficiency (tanδ) were determined in a resonance frequency mode. The storage modulus increased with increasing fibre content and a further increase was observed with the addition of compatibiliser. The tanδ was decreased by an increase in fibre content because of the restricted mobility of the polymer chains caused by the fibres. A marginal shifting of the transition was observed with an increase in the compatibiliser dose at constant e fibre loading. A low concentration of fibre increased the crystallinity of HDPE because it acted as a nucleating agent.

Effect of Compatibiliser and Fibre Content on Jute Fibre Reinforced HDPE/EPDM Composites

The mechanical and morphological properties of jute fibre reinforced high-density polyethylene (HDPE)/ethylene-propylene-diene terpolymer (EPDM) composites were studied as a function of fibre and compatibiliser content. A remarkable improvement in tensile strength, flexural strength and unnotched impact strength was attained with addition of 2% compatibiliser. With increasing fibre content, the tensile and flexural strength increased but impact strength declined because of the presence of too many fibre ends that could cause crack initiation. Scanning electron microscopy showed that better interaction and distribution of fibres in the matrix was achieved in the compatibilised system than the uncompatibilised one.

Study on Mechanical and Dielectric Properties of Jute Fiber Reinforced Low-Density Polyethylene (LDPE) Composites

Jute fiber (Hessian cloth) reinforced low-density polyethylene (LDPE) composites were prepared by heat press molding techniques. The mechanical properties such as tensile strength (TS), bending strength (BS), and elongation at break of the composites were studied. The enhancement of TS (33%) and BS (50%) were obtained as a result of reinforcment jute fabrics in LDPE. In order to improve the mechanical properties and adhesion between jute and LDPE, hessian cloth were each treated with 2-hydroxyl ethyl methacrylate (HEMA). The HEMA-treated jute composite showed higher tensile and bending strength compared to untreated jute composite and LDPE. Dielectric properties like dielectric constant and loss tangent (tan δ) of jute, LDPE and composites were studied. Ferro to paraelectric phase transition occurred in both treated and untreated jute composites containing more than 20% jute. Water uptake behaviors of the composite were monitored and HEMA-treated composite showed lower water absorption behavior. The adhesion nature of jute and LDPE also characterized by scanning electronic microscopy (SEM), better adhesion was observed between HEMA-treated jute and LDPE over untreated ones.

422 ジュート繊維強化プラスチックスの機械的特性に及ぼす繊維の吸水膨潤の影響

422 ジュート繊維強化プラスチックスの機械的特性に及ぼす繊維の吸水膨潤の影響

Mechanical properties of jute fibers and interface strength with an epoxy resin

Mechanical properties of jute fibers and interface strength with an epoxy resin

Effect of Moisture on the Frictional Properties of Jute Fibre

IN connexion with the measurement of frictional characters of jute fibre (a full report of which will be published elsewhere) by allowing a fibre pad on a metal block to slide over another the inclination of which could be increased gradually, the following results on the effect of relative humidity on the coefficient of friction (μ)—fibres sliding parallel to one another—were obtained: The samples were conditioned in desiccators over appropriate solutions for seven days or more, and were tested for friction when the room conditions were at about the corresponding relative humidities. As in the case of other textile materials1,2, between 40 and 80 per cent relative humidity, the coefficient of friction of jute fibre appears to increase approximately linearly with relative humidity.