Mechanical and Thermal Characterization of Camphor Soot Embedded Coir Fiber Reinforced Nylon Composites
- PDF / 2,636,234 Bytes
- 10 Pages / 609 x 794 pts Page_size
- 4 Downloads / 186 Views
ISSN 1229-9197 (print version) ISSN 1875-0052 (electronic version)
Mechanical and Thermal Characterization of Camphor Soot Embedded Coir Fiber Reinforced Nylon Composites T. Raghavendra1 and Panneerselvam K1* Department of Production Engineering, National Institute of Technology, Tiruchirapalli-620015 Tamil Nadu, India (Received June 18, 2019; Revised February 20, 2020; Accepted February 26, 2020) Abstract: In this study, camphor soot was infused into coir fibers using osmosis technique. Further, modified coir fibers were reinforced in nylon 6 using the melt intercalation method by varying fiber content (0, 3, 6, 9 wt. %) to obtain camphor soot embedded coir fiber reinforced nylon composites (CSCFNCs). The presence of camphor soot infused coir fibers in nylon 6 matrix was confirmed through XRD peaks by forming a single peak for CSCFNCs compared to neat nylon 6. CSCFNCs were characterized for tensile strength, flexural strength, impact strength and density as per ASTM standards. Thermal behaviour of CSCFNCs were also investigated by TGA, DSC, MFI and DMA. Tensile strength, flexural strength and density of the CSCFNCs were enhanced compared to neat nylon 6. On the other hand, impact strength is reduced. MFI and tan δ values for CSCFNCs shows decreased trend due to constrained polymer movement. TGA analysis for CSCFNCs shows increased thermal stability, marginally. DSC analysis revealed two peaks at 228 °C and 468 °C corresponds to the melting point and degradation temperature of CSCFNCs respectively. DMA result shows the storage modulus of 700 MPa for neat nylon 6 and it is enhanced in the case of CSCFNCs. Maximum storage modulus was recorded for 6 wt. % CSCFNCs was 806 MPa. Creep study shows that 6 wt. % CSCFNCs has shown minimum impression depth 0.125 mm compared to neat nylon 6 0.212 mm. SEM reveals that the fibers are uniformly distributed in the matrix and experienced brittle fracture. Keywords: Camphor soot, Coir fibers, Osmosis, Nylon 6 matrix, Melt intercalation method
significantly reduce the weight of final components [10]. Among all natural fibers, coir fiber has shown potential in the field of composites. Coir fibers are extracted from the exterior shell of coconuts. Fiber cells are hollow and narrow, comprising dense walls of cellulose. There are two types of coir fibers. White coir fibers are extracted from pre-ripe coconuts. These are smoother and finer and have a white or light brown colour. On the other hand, brown coir is harvested from fully grown coconuts. It is strong and thick and has good abrasion resistance. It is widely used to make brushes, mats and sacking as it contains more lignin and less cellulose than other natural fibers making it stronger and less flexible [11]. Coconut trees are have an astonishing osmosis rate due to their size and so their fibers are highly porous. Coconut fibers are composed of many elementary fibers (in the range of 200) with a lacuna at the centre. The micro elementary fibers are made of two main cell walls comprising bundles of micro fibers aligned at an ang
Data Loading...
