Mechanical, Thermal and Morphological Behaviors of Coconut Shell Powder Filled Pu/Ps Biocomposites

2010 ◽  
Vol 123-125 ◽  
pp. 331-334
Author(s):  
S. Roopa ◽  
Siddaramaiah
Keyword(s):  
Castor Oil ◽  
Polymer Network ◽  
Interpenetrating Polymer Network ◽  
Toluene Diisocyanate ◽  
Coconut Shell ◽  
Mechanical And Thermal Properties ◽  
Degradation Kinetic ◽  
Particulate Filler ◽  
Coconut Shell Powder ◽  
Shell Powder

Castor oil based polyurethane (PU) interpenetrating polymer network (IPN) has been prepared by using castor oil, toluene diisocyanate and styrene monomer. The coconut shell powder (CSP) particulate filler with different weight ratios viz., 0, 5, 10, 20 and 30 wt % were incorporated into polyurethane/polystyrene (PU/PS, 90/10) IPN. The effects of CSP particulate filler loading on the physico - mechanical and thermal properties of PU/PS IPN biocomposites have been studied. From the tensile behavior, it was noticed that a significant improvement in tensile strength and tensile modulus with increase in CSP filler content. It was found that the degradation of all composites takes place in two steps. Degradation kinetic parameters were obtained for the composites using Broido (BR), Coats–Redfern (CR) and Horowitz-Metzger methods (HM). The damping property reduced after the incorporation of CSP filler. Morphology of the cryo-fractured composites was studied using scanning electron microscopic technique (SEM).

Effect of Cenosphere on the Performance of Polyurethane/Polystyrene Interpenetrating Polymer Network Green Composites

2017 ◽  
pp. 158-185
Author(s):  
Roopa S. ◽  
Siddaramaiah
Keyword(s):  
Thermal Stability ◽  
Tensile Strength ◽  
Thermogravimetric Analysis ◽  
Castor Oil ◽  
Polymer Network ◽  
Thermal Characteristics ◽  
Mechanical Analysis ◽  
Interpenetrating Polymer Network ◽  
Toluene Diisocyanate ◽  
Green Composites

The effect of cenosphere content on the performances of polyurethane/polystyrene (PU/PS, 90/10) interpenetrating polymer network (IPN) based green composites have been studied. The PU/PS IPNs have been prepared using castor oil, toluene diisocyanate and styrene. IPN/cenosphere composites have been prepared with different weight fractions viz., 0, 5, 10, 20 and 30 wt % of cenosphere. The prepared IPN composites have been characterized by physico – mechanical, chemical and thermal behavior. The tensile strength of unfilled IPN was 1.79 MPa and a significant improvement in tensile strength (34%) was noticed for 10% cenosphere loaded IPN composite. The swelling behavior of the composites has been studied in different organic solvents. Thermal characteristics of the composites have been measured using differential scanning calorimeter, thermogravimetric analysis and dynamic mechanical analysis (DMA). A slight improvement in thermal stability was noticed for filler loaded specimens. Morphological features of cryo-fractured IPN/cenosphere green composites have been analyzed using SEM.

scholarly journals PENGARUH SUHU DAN KECEPATAN PENGADUKAN PADA PROSES PEMBUATAN SURFAKTAN NATRIUM LIGNOSULFONAT DARI TEMPURUNG KELAPA

2013 ◽  
Vol 2 (1) ◽  
pp. 21-25
Author(s):  
Jhon Peri Rinaldo Sirait ◽  
Nico Sihombing ◽  
Zuhrina Masyithah
Keyword(s):  
Base Material ◽  
Sodium Bisulfite ◽  
Coconut Shell ◽  
Effect Of Temperature ◽  
Agitation Rate ◽  
Reactant Ratio ◽  
Ir Spectrophotometry ◽  
Ft Ir ◽  
Coconut Shell Powder ◽  
Shell Powder

Coconut shell is one of agricultural wastes that having low commercial value. This research is objected to use coconut shell as the base material of producing surfactant. The use of coconut shell is basically due to its content of lignin, about 29,4%. The objective of this research is to obtain isolate lignin with increasing chatalis NaOH and H2SO4 with lignin identification, the effect of temperature and agitation rate of producing surfactant. The research was done in a reactor with temperature of 100 0C, 110 0C, 120 0C, 3 hours reaction time, pH 6, 80 rpm, 90 rpm, 100 rpm agitation rate, and coconut shell as the base material. Dry coconut shell is grinded and the powder is collected to be reacted. The coconut shell powder is reacted with sodium bisulfite solution with variation in ratio of 1:0,5.  The product is filtered to get filtrate and residue. The filtrate is further analyzed by using the FT-IR spectrophotometry method. From the research we get maximum purity of surfactant at sodium bisulfite with reactant ratio of 1:0,5;  Speed 100 rpm and temperature 120 0C.

scholarly journals Effect of Coconut Shell Powder as Filler on the Mechanical Properties of Coir-polyester Composites

2017 ◽  
Vol 5 (4) ◽  
pp. 75-82 ◽  
Author(s):  
Md. Tangimul Islam ◽  
Subrata Chandra Das ◽  
Joykrisna Saha ◽  
Debasree Paul ◽  
M. Tauhidul Islam ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Coconut Shell ◽  
Polyester Composites ◽  
Coconut Shell Powder ◽  
Shell Powder

Experimentation and Prediction Analysis on the Mechanical Performance of Fish Scale and Coconut Shell Powder-Based Composites

2021 ◽  
pp. 1-12
Author(s):  
Lokesh K S ◽  
Bharath Kumar Shanmugam ◽  
Shrinivasa Mayya D ◽  
Panduranga B.P ◽  
Naveen kumar J R ◽  
...  
Keyword(s):  
Mechanical Performance ◽  
Coconut Shell ◽  
Fish Scale ◽  
Prediction Analysis ◽  
Coconut Shell Powder ◽  
Shell Powder
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