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Study on the Chemical Modification Process of Jute Fiber
Submitted toDr.Hosne Ara BegumAssociate Professor &
Head Department of YME
Submitted byPranob Halder
YMEId:2015-2-1-13
In a Nutshell
Degumming of prechlorite treated jute fiber was studied in this presentation
Here –prechlorite means.Jute isTreated in a bath with sodium chlorite1.5 g/l,ph-3,liquor ratio-1:10 kept at 30 degree centigrade and then Throughly washed.
Prechlorite treated jute fiber
Fig:Degumming process of jute
Recipe:
1.sodium hydroxide of 12g/L2. sodium silicate of 3g/L3. TF-107B of 2g/L, TF-125A of 2g/L4.Liquor ratio-1:20
Are kept at 100 degree temperature for 105 min.
Evaluate :
Effecet of - • Sodium Hydroxide Concentration• Sodium silicate Concentration• Time & Temperature• Liquor ratio• Penetrating agent Concentration• Degumming agent Concentration
IntroductionJute has some grate advantages:
• Natural Biodegradable• High Tensile Strength• Excellent Thermal Conductivity• Coolness• Ventilation function
Improved civilization
Ramie
Flax
Hemp
Constitutent
1.Cellulose: 55-65%2.Hemi cellulose:14-20%3.Lignin: 12-13%4.Moisture Content:13.75%5.Pectin: 0.2%6.Wax: 0.5%
Spin-unability:Due to
Small unit of cellulose
Coarseness Stiffness
Low extensibility & grip performance
Materials
Lightly combed and dewaxed raw jute fiber (Bengal
Chemicals
And
Scouring Process
Fiber Load
30 TF107B
TF125
Sodiamsilicate
40
NaOH
100*60\
80
Wash
Recipe:1.NaOH:5-3g/l2.Sodium silicate: 1-5 g/l3.TF107B:0.5-6.0 g/l4.TF125A:1-8 g/l5.Temp:100 degree6.Time:60-240 min
Formula
Pretreated jute fiber was treated with different sodium hydroxide concentration viz. 5g/L, 10g/L, 20g/L, 30g/L, and the solution was made with sodium silicate 3.0g/L, TF-107B 2.0g/L, TF-125A 2.0g/L, fiber to liquor ratio 1:20, and treated at 98 for 120 min℃
Effect of NaOH Concentration
66.5%
15
• pretreated jute fiber was treated for different time viz. 60 min., 90 min., 120 min., 180 min., 240 min., and the solution was made with sodium hydroxide 10g/L, sodium silicate 3.0g/L, TF107-B 2.0g/L, TF-125A 2.0g/L, fiber to liquor ratio 1:20, and treated at 98 ,℃
Effect of Time
120 min
Effect of Temperature
Effecet of Sodium silicate
72.6%
Effect of fiber to liquor ratio
Pretreated jute fiber was treated with different fiber to liquor ratio viz. 1:10, 1:15, 1:20, 1:30, 1:40, and the solution was made with sodium hydroxide 10 g/L, sodium silicate 3.0g/L, TF-107B 2.0g/L, TF-125A 2.0g/L, and treated at 100 for 120 min,℃
Effect of Fiber to liquor ratio
63.1%
Effect of TF-125A Concentration
Effect of TF-107B Concentration
L9(34) Orthogonal Experiment
The optimum condition for gum decomposition was A3B2C1. And the optimum fineness index 2.02 tex was obtained with A3B2C1.
Effect of Degumming on the Constituent Contents of Jute Fiber
Conclusion The degumming process is necessary for improving the textile properties of jute fiber. The pre-chlorite treated jute fiber was degummed by varying sodium hydroxide concentration, treatment time, temperature, sodium silicate concentration, degumming agent TF-125A concentration, penetrating agent TF-107B concentration and fiber to liquor ratio. It was found that sodium hydroxide concentration, sodium silicate concentration and treatment time were the three most important parameters for degumming process, and the degumming process was an effective method to remove hemicellulose, lignin, pectin and some other non-cellulose materials
According to the results of the L9(34) orthogonal experiment, the gum decomposition ratio 61.9 % and fineness index 2.02 Tex were obtained with the optimum treating conditions such as sodium hydroxide of 12 g/L, sodium silicate of 3.0 g/L, TF-107B of 2.0 g/L, TF-125A of 2.0 g/L, treatment time of 105 min, temperature of 100 and fiber to ℃liquor ratio of 1:20.
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Questions
Thanks to all