Studies on Physical Properties of Chemically Treated Jute Geo-textiles and their Applications Presented -By - Md. Asaduzzaman -Director Technology -BANGLADESH JUTE RESEARCH INSTITUTE -& -Principal Investigator ( JGT Processing Part)

BACKGROUND &OBJECTIVES Jute is a seasonal agricultural crop. Widely grow in this part of the world particularly Bangladesh, India, Nepal, Myanmar, Thailand and Vietnam. Commercial jute fibers are extracted from Chorchorus Capsularis (white), Chorchorus Olitorious (tossa), through complex microbial process of retting. It is a photo reactive plant, only 120 days are needed for its harvesting. Temperate, wet and humid climate of Bangladesh are very conducive to the growth of jute.

Jute is a lignocellulosic fiber with a complex internal structure and considerable amount of free volume. Since it is a natural fiber, its properties vary widely and biodegrade over a period of months to year. Jute was the only natural fiber for composite products before the development of synthetic fibers. Introduction Contd…

Contd.. For broad spectrum of properties, natural rubber latex, Diospyros embryopteris Pers and other polymeric materials have become the preferred coatings and now polymer is the essential coating material. Coated fabrics are now is an important place in technical textiles and its manufacturing processes are one of the important technological innovations in modern industry.

The properties of a coated fabric depend on the type of polymer used and its formulation, the nature of the textile substrate, and the coating method employed. The approach for natural additive like latex rubber and Diospyros embryopteris Pers coating on jute fabric pays attention because both are from natural resource, thereby good ecological balance and no additional carbon footprint. Contd..

Contd… Latex is a high molecular weight strong hydrophobic viscoelastic polymer, which can be ideally exploited for reinforcing as well as increasing durability of natural fiber like jute. Coating caused tremendous improvement of their mechanical and durability properties. If coated in a fabric form depending on the coated jute can regain its lost market in flexible packaging of cement, fertilizer as well as food grains. So, this needs an optimized process development for coating of jute fabric by rubber latex

Technical textiles fabrics that improve engineering Performance of the soil specially hill, island, road, costal area. Long lasting, high strength, Made of synthetics and natural fibers (jute, Mesta, coir) Cont..

Application of geo-synthetic material for mainly road construction. jute geo-textile material used as reinforcement to improve the life cycle of road. With the increasing of jute geo-textile world wide geotechnical problems without hampering environmental sustainability. jute geo-textile is used as developing amongst engineers, manufacturers and end users is opening new avenues for potential jute geo textiles. About Geotextile

Jute geo-textiles High moisture absorbing capacity Excellent drape ability High initial strength Biodegradable Easy availability

Objectives To develop a eco-friendly Jute Geo Textile To control soil erosion To improve the hill slop To protect the river bank during flood

Activities in BJRI Part of the Project

Physical properties tested in Textile Physics Division Chemical treatment were done in Pilot Plant and Processing Division. Treated and tested fabrics were supplied for practical implementation Key Activities

Materials Used Woven jute fabrics (Hessian) Copper Sulphate Solution, Natural Additives (Rubber Latex Solution & Diospyros embryopteris Pers ) Bitumin Other chemicals

Machine Used Padding Machine Tensile strength tester Thickness tester

Method Employed Socking Padding Drying Packing

Material Processed By BJRI YearJute Fabric (Yds)

Sample Preparation 1.Treated by Natural Additives [Rubber Latex & Others (A 1, A 2, A 3 ) 2.Treated by Bitumen (B 1, B 2, B 3 ) 3.Treated by Different Chemicals (C 1, C 2, C 3,) 4.Treated by Copper Sulphate (D 1,D 2, D 3 )

CONTROL SAMPLES 1 2 3

NR LATEX TREATED SAMPLES

BITUMEN TREATED SAMPLS

DIFFERENT CHEMICALS TREATED SAMPLES

COPPER SULPHATE TREATED SAMPLES

Properties Tested Tensile Strength Thickness variation GSM Bursting Strength % of elongation Chemical absorption (%)

TEST RESULTS

1 2 3

Type A Duration (App.) Months Type B Duration(App.) Months Type C Duration (App.) Months Environment friendly Control 15-6Control Contr ol 3 6Eco-friendly Natural additives Latex A1 15Latex A Latex A3 15Eco-friendly Bitumen B1 4-5 Bitumen B2 Max 6 Bitum en B3 5-6Non Eco-friendly Chemicals C1 About 3 Chemical s C2 Nearly 6 Chemi cals C3 4-5Non Eco-friendly Cu treated D1 3-4Cu treated D2 More than 7Cu treate d D3 6-7Eco-friendly Table1: Longevity of raw and different jute geo textile

Conclusion From the study it was found that tensile strength of rubber treated jute geo-textile were increased up to %, where as the tensile strength of bitumen treated jute geo-textile were decreased up to 30% depending on the treatment condition. It is noted that tensile strength of the cupper treated jute geo- textiles have not shown any significant improvement. The prepared jute geo-textiles were used in the construction of river embankment in different places of Bangladesh with a view to controlling soil erosion. The life span of the used jute geo-textiles was found satisfactory.

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