The effect of surface modifications on sisal fiber properties and sisal/poly (lactic acid) interface adhesion |
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| Affiliation: | 1. Mechanical Engineering Department GNDEC, Punjab Technical University, Ludhiana Punjab, 141010,India;2. School of Mechanical Engineering, Lovely Professional University, Phagwara , Punjab, 144402, India;3. CGC, Landra, Punjab, India;4. Mechanical & Production Engineering Department, GNDEC, Punjab Technical University, Ludhiana Punjab, 141010, India;1. School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China;2. College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China;1. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, PR China;2. Key Laboratory of Advanced Civil Engineering Materials, Ministry of Education, Tongji University, Shanghai 200092, PR China |
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| Abstract: | The main aims of this work were to study the effect of surface modifications on sisal fiber properties as well as on fiber/poly (lactic acid) (PLA) interface adhesion. For this purpose, alkali, silane and combination of both treatments were applied to sisal fiber. The effects of treatments on fiber thermal stability, fiber wettability, morphology, tensile properties and on fiber/PLA interfacial shear strength (IFSS) were studied. After treatments IFSS values improved at least 120%, however, tensile strength of sisal fibers decreased. Alkali treatment removed some non-cellulosic components (hemicelluloses, lignin) as confirmed by Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). The removal of non-cellulosic materials led to fibrillated and rough morphology as observed by optical microscopy (OM). FTIR spectrum of silane treated fibers showed a band related to silane amino group and contact angle measurements confirmed that fibers became more hydrophobic. All treatments used improved fiber/PLA adhesion. |
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| Keywords: | A Fibers B Fiber/matrix bond B Mechanical properties D Mechanical testing |
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