scholarly journals Effect of Alkali Treatments of Physical and Mechanical Properties of Coir Fiber

2015 ◽  
Vol 3 (2) ◽  
pp. 23-28 ◽  
Author(s):  
Imran S. Musanif ◽  
Adelbert Thomas
2018 ◽  
Vol 2 (3) ◽  
Author(s):  
Md. Sahadat Hossain 3 ◽  
Md. Nazrul Islam 1* ◽  
M A Gafur 2

The composites of biodegradable high density polypropylene (HDPE) reinforced with short coir fiber were prepared by melt mixing followed by hot press molding. The effect of fiber addition on some physical and mechanical properties was evaluated. Different process parameters (e.g. mixing time, heating temperature and time, cooling time etc.) were established for good sample preparation The effects of fiber addition on some physical and mechanical properties were evaluated. The mechanical properties were studied via Universal Testing Machine (UTM). The density was increased with the increase of fiber addition. The tensile strength (TS) of fabricated product increased with the increase of fiber addition up to 10% (by wt.) and then decreased continuously. The elongation of fabricated composites was decreased with the increase of fiber addition continuously. The changes in the mechanical properties were broadly related to the accompanying interfacial bonding of HDPE coir composites (HDPECC). To observe the hydrophilicity of the prepared composites was evaluated by the water uptake properties. The interfacial bonding of the fiber and matrix of the coir fiber reinforced composites was studied via scanning electron microscope. It revealed that the introduction of short coir fiber led to a slightly improved mechanical stability of PP- Coir composites. 


2015 ◽  
Vol 1 (01) ◽  
pp. 33-41 ◽  
Author(s):  
T.J. Sasikala ◽  
Dr A Malar Retna ◽  
Robin Kumar Samuel

Vegetable oil is readily available and inexpensive, can be used to synthesise various types of polymers. In our present study, epoxidised punnal oil has been synthesised from punnal oil via peroxy acetic acid generated ‘insitu’ by treating acetic acid with hydrogen peroxide as oxygen donor. The epoxidation is catalysed by using sulphuric acid. The epoxidation is confirmed by iodine value, oxirane oxygen analysis, fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance (NMR) and thin layer chromatography (TLC) analysis.Natural fibers such as jute, sisal, banana, rice husk etc are locally available in abundance and have excellent physical and mechanical properties and can be used more effectively in the development of composite materials for various applications. Epoxy composite samples are prepared from the natural fiber with different ratios using triethylamine hardener and pthaleic anhydride. The mechanical properties viz. tensile strength and the physical properties observed are discussed in detail


2018 ◽  
Vol 40 (6) ◽  
pp. 2132-2141 ◽  
Author(s):  
M.E. González‐López ◽  
A.A. Pérez‐Fonseca ◽  
R. Manríquez‐González ◽  
M. Arellano ◽  
D. Rodrigue ◽  
...  

2014 ◽  
Vol 61 ◽  
pp. 49-54 ◽  
Author(s):  
Özge Andiç-Çakir ◽  
Mehmet Sarikanat ◽  
Hikmet Bahadir Tüfekçi ◽  
Cihan Demirci ◽  
Ümit Halis Erdoğan

2021 ◽  
Author(s):  
Kavya H. M. ◽  
Saravana Bavan ◽  
Yogesha B. ◽  
Sanjay M. R. ◽  
Suchart Siengchin ◽  
...  

2010 ◽  
Vol 19 (1) ◽  
pp. 91-106 ◽  
Author(s):  
Mominul Haque ◽  
Nazrul Islam ◽  
Monimul Huque ◽  
Mahbub Hasan ◽  
Saiful Islam ◽  
...  

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