Effect of atmospheric plasma treatment on mechanical properties of jute fiber and interface adhesion between fiber and resin

The surface treatment by physical method of jute fiber using air plasma was investigated. Fiber was treated by the atmospheric plasma with various conditions of power 50W and different treatment times (from 1 min to 7 min). After treatment, the characteristics of fiber changed remarkably and fiber surface observed by SEM analyze showed a better morphology for adhesion. The result showed that tensile strength and Young’s modulus of jute fiber were slightly improved, however there was a remarkable improvement interface adhesion between fibers and polypropylene (PP) resin. Especially, when combine physical method and chemical method, the interfacial adhesion and mechanical properties of jute fibers were significantly improved
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Effect of atmospheric plasma treatment on mechanical properties of jute fiber and interface adhesion between fiber and resin Journal of Chemistry, Vol. 45 (5A), P. 201 - 206, 2007 EFFECT OF ATMOSPHERIC PLASMA TREATMENT ON MECHANICAL PROPERTIES OF JUTE FIBER AND INTERFACE ADHESION BETWEEN FIBER AND RESIN Received 16 August 2007 Ta Thi Phuong Hoa, Nguyen Thi Thanh Binh, Nguyen Chau Giang Polymer Center, Hanoi University of Technology Summary The surface treatment by physical method of jute fiber using air plasma was investigated. Fiber was treated by the atmospheric plasma with various conditions of power 50W and different treatment times (from 1 min to 7 min). After treatment, the characteristics of fiber changed remarkably and fiber surface observed by SEM analyze showed a better morphology for adhesion. The result showed that tensile strength and Young’s modulus of jute fiber were slightly improved, however there was a remarkable improvement interface adhesion between fibers and polypropylene (PP) resin. Especially, when combine physical method and chemical method, the interfacial adhesion and mechanical properties of jute fibers were significantly improved. I - Introduction II - Experimental Natural fiber reinforced composites have 1. Material recently increased concerns of scientists and - Jute fiber: silk jute and roll of jute supplied technologists because of many advantages. from Hanoi Jute Company. Natural fibers are abundant with various species, can be recyclable and biodegradable and - MAPP - Compatibilizer polypropylene -g- therefore are very potential in manufacturing maleic anhydride with 0.8% of maleic environmental friendly polymer composite. It is anhydride was synthesised at Polymer Center, Hanoi University of Technology, Vietnam. however important to improve interface adhesion properties between natural fiber and - Technical potassium hydroxide was used resin. Among several fiber treatment methods, for alkali treatment. plasma treatment is a new physical method - Acetic acid from China with density and which is regarded as a dry surface processing concentration of 1.05 g/ml and 99.3% method for adhesion improvement without respectively. waste liquid. Moreover, plasma treatment can 2. Fiber preparation modify surface without obstructing basic properties of fiber. In this research, atmospheric Raw jute fiber obtained locally was scoured plasma treatment has been applied to improve by treating with a 1% solution of a detergent at 70oC for 1 h to remove weaving size (potato adhesion properties between jute fiber and starch and waxes), then by washing in distilled polypropylen (PP) resin. water and drying. 201 3. Alkali treatment excess of sodium hydroxide and thoroughly rinsed with distilled water and dried. Jute fibers were soaked in beakers containing potassium hydroxide concentration 4. Plasma treatment in 0.5N for 2h, 4h, 6h and 8h. The fibers were The plasma experiment system used for this then washed with dilute acetic acid to neutralize study is shown in figure 1. Dielectric Electrode Power supply 12-20 KHz 0-200 W Gas exhaust Enclosure Vacuum pump Figure 1: Experimental system creates plasma Two Plane-parallel metal electrodes are separated by an atmospheric environment in which silent discharge environment at the gap. The electrodes are connected to a power supply with high frequency and power of 12 KHz and 50W. Fiber was treated under conditions as showed in table 1. Table 1: Plasma treatment condition Gas Air Pressure and temperature Atmospheric pressure, room temperature Intensity and frequency of power 50W and 12 KHz ...