scholarly journals Effect of Kenaf Core Fibre (Hibiscus cannabinus) as one of the Dispersing Phases in Brake Pad Composite Production

2019 ◽  
Vol 1378 ◽  
pp. 042046
Author(s):  
B.U. Anyanwu ◽  
G.O. Olayinka ◽  
D.T. Ezeokeke ◽  
O.S. Fayomi ◽  
O.O. Oluwole
Keyword(s):  
Hibiscus Cannabinus ◽  
Brake Pad ◽  
Kenaf Core ◽  
Core Fibre ◽  
Composite Production

Sound Absorption Coefficients Natural Fibre Reinforced Composites

2013 ◽  
Vol 701 ◽  
pp. 53-58 ◽  
Author(s):  
Elammaran Jayamani ◽  
Sinin Hamdan
Keyword(s):  
Sound Absorption ◽  
Urea Formaldehyde ◽  
Weight Fraction ◽  
Natural Fibre ◽  
Solid Content ◽  
Formaldehyde Resin ◽  
Hot Press ◽  
Absorption Coefficients ◽  
Kenaf Core ◽  
Core Fibre

In this Investigation, the influence of two kind of polymers (Urea-formaldehyde and Polypropylene) mixed with natural fibre (Kenaf) were studied for their sound absorption coefficients. Four samples were made; Samples A1 and A2 are made of Kenaf core fibre with adhesive of high emission Urea-formaldehyde resin (HN 100) with 51.6 % solid content. The fabrication of the particle board was done using a hot press for 6 minutes under the pressure of 40 Ton at 180°C for different fibre lengths 1 mm (Sample A1) and 0.6 mm (Sample A2) with weight fraction of 80%. Sample B1 and B2 are made of Kenaf core fibre with polypropylene matrix materials with coupling agent of polyvinyl alcohol. The fabrication of the sample was done using hot press for 30 minutes under the pressure of 1000 Psi at 180°C for different lengths of 1 mm (Sample B1) and 0.6 mm (Sample B2) with weight fraction of 20%. The sound absorption coefficients of samples were measured according to American society for Testing Materials (ASTM E1050 10) two microphone method. It is evident that type of polymer influences the sound absorption coefficients.

scholarly journals Conversion of hemicellulose from kenaf core fiber to xylose through dilute sulfuric acid hydrolysis

2019 ◽  
Vol 21 (1) ◽  
pp. 14-22 ◽  
Author(s):  
William Judiawan ◽  
Yanni Sudiyani ◽  
Elda Nurnasari
Keyword(s):  
Sulfuric Acid ◽  
Acid Hydrolysis ◽  
Acid Concentration ◽  
Sulfuric Acid Concentration ◽  
Heating Time ◽  
Hibiscus Cannabinus ◽  
Kenaf Core ◽  
Dilute Sulfuric Acid ◽  
Acid Ratio ◽  
Xylose Concentration

Kenaf (Hibiscus cannabinus) is a lignocellulosic plant that is usually utilized as a fiber source for sack production. The core from kenaf fiber has not been utilized yet in Indonesia, therefore it is still considered as a waste. Hemicellulose from kenaf core can be hydrolyzed to xylose through dilute sulfuric acid hydrolysis in high temperature. Hydrolysis in this study was done by using autoclave at 121℃ and 10% (m/v) biomass: acid ratio for 15 and 45 minutes with a variation on acid concentration (2%, 4%, and 6% v/v). Xylose concentration in the hydrolyzate tends to increase with higher acid concentration and longer heating time. 6% (v/v) sulfuric acid concentration and 45 minutes of heating time produce the highest xylose concentration (20.53 gr/L) and yield (86.50%)

scholarly journals Production of Lactic Acid from Kenaf Core Hydrolysate by Rhizopus oryzae FTCC 5215

2012 ◽  
Vol 576 ◽  
pp. 248-251 ◽  
Author(s):  
S.M. Nurhafizah ◽  
Hazleen Anuar ◽  
M. Mel ◽  
Rashidi Othman ◽  
M.N. Nur Aisyah ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Rhizopus Oryzae ◽  
Raw Materials ◽  
Hibiscus Cannabinus ◽  
Raw Material ◽  
Food Sources ◽  
Lignocellulosic Material ◽  
Kenaf Core ◽  
Hydrolysis Process

Lactic acid (LA) is commercially produced biologically using food-derived raw materials such as potato and corn. It seems to be less economical since they have to compete with the food sources industries. Thus, kenaf (Hibiscus cannabinus) is found to be the best alternative to substitute the raw material for LA production. In this paper, kenaf core were used as the substrate for production of LA by Rhizopus oryzae FTCC 5215. Since kenaf is one type of lignocellulosic material which is naturally resistant to breakdown to its structural sugars, it will inhibit microorganisms to be accessed through. Thus, hydrolysis process is needed as the aid for the liberation glucose. The highest value of lactic acid produced is 15.2 g/L at 25 oC with speed 200 rpm.

Development and characterization novel bio-adhesive for wood using kenaf core (Hibiscus cannabinus) lignin and glyoxal

2019 ◽  
Vol 122 ◽  
pp. 713-722 ◽  
Author(s):  
M. Hazwan Hussin ◽  
Alia Abdul Aziz ◽  
Anwar Iqbal ◽  
Mohamad Nasir Mohamad Ibrahim ◽  
Nur Hanis Abd Latif
Keyword(s):  
Hibiscus Cannabinus ◽  
Kenaf Core

scholarly journals Effect of particle pre-treatments on the quality of kenaf core/HDPE plastic composites

BioResources ◽  
2020 ◽  
Vol 15 (3) ◽  
pp. 6262-6272
Author(s):  
Xiaoping Li ◽  
Jed Cappellazzi ◽  
Jeffrey J. Morrell
Keyword(s):  
Lignin Content ◽  
Value Added ◽  
Hibiscus Cannabinus ◽  
Kenaf Core ◽  
Enzyme Pretreatment ◽  
Plastic Composites ◽  
Pectin Content ◽  
Pretreatment Time ◽  
Pre Treatment

Kenaf (Hibiscus cannabinus) produces a highly versatile fiber with a variety of uses, but it also produces sizable amounts of core materials that have fewer value-added applications. One possible use for the plant core is in plastic composites, but developing suitable interactions between the hydrophobic plastic and the hydrophilic kenaf core is difficult. In this study, the potential for using various kenaf core pre-treatments was explored using high-density polyethylene (HDPE). While the pre-treatments changed the pectin content and lignin content, the increase or decrease depended on the pre-treatment methods. Pretreatments of core particles with 1% NaOH for 60 min or 1% HCl for 30 min markedly improved the mechanical properties of a 60/40 kenaf/HDPE mixture, although the pre-treatment had little effect on resistance to fungal attack. The results suggest that pectinase enzyme or cellulase enzyme pretreatment time should be shortened to 30 min or 60 min.

Sign in / Sign up

Export Citation Format

Share Document