Preparation of Epoxy-Kenaf Nanocomposite Based on Montmorillonite

2011 ◽  
Vol 264-265 ◽  
pp. 469-474 ◽  
Author(s):  
A. Zuliahani ◽  
H.D. Rozman ◽  
G.S. Tay
Keyword(s):  
Mechanical Properties ◽  
Hexamethylene Diisocyanate ◽  
Epoxy Composites ◽  
Reinforcement Effect ◽  
Resin Infusion ◽  
Kenaf Fiber ◽  
Bast Fiber ◽  
Infusion Method ◽  
Kenaf Bast ◽  
Kenaf Bast Fiber

In the present study, lignocellulosic-epoxy composites were prepared from Kenaf bast fiber at different loadings using resin infusion method. Montmorillonite (MMT) was used as a filler which would be mixed in the epoxy resin before the mixture (resin, hardener and MMT) was infused to the Kenaf fiber mat. The effect of modification on MMT was also studied in this work. MMT was modified using grafting process, which the oxygen in MMT were grafted with isocyanates group from Hexamethylene Diisocyanate (HMDI). The mechanical properties of the composites prepared were improved as Kenaf fiber loadings increased. This indicated that the reinforcement effect by additional of Kenaf fiber was evident. The mechanical properties of the composite can be further enhanced by additional of MMT or HMDI-MMT.

Kenaf Bast-Unsaturated Polyester Composite: The Effect of Different Alkaline Treatment Condition on Tensile Properties

2013 ◽  
Vol 594-595 ◽  
pp. 644-647
Author(s):  
Abdul Rahman Rozyanty ◽  
M.Y. Nur Firdaus ◽  
Luqman Musa
Keyword(s):  
Unsaturated Polyester ◽  
Alkaline Treatment ◽  
Kenaf Fiber ◽  
Bast Fiber ◽  
The Matrix ◽  
Polyester Composite ◽  
Electron Microscope Analysis ◽  
Kenaf Bast ◽  
Kenaf Bast Fiber ◽  
Composite Properties

The biocomposites were prepared by using kenaf bast fiber mat as reinforcing materials at different percentage. The kenaf bast fiber was treated with alkaline at different sodium hydroxide (NaOH) percentage. Composites which were made from treated alkaline kenaf treated bast fiber showed better mechanical properties (tensile) than those of the unmodified. Scanning electron microscope analysis showed the evidence of the enhancement of the compatibility between kenaf bast fiber and the matrix. The percentage of kenaf fiber in composites also plays a crucial role in determining the composite properties.

Kenaf Bast Fiber Bundle–Reinforced Unsaturated Polyester Composites. I: Processing Techniques for High Kenaf Fiber Loading

2010 ◽  
Vol 60 (3) ◽  
pp. 289-295 ◽  
Author(s):  
Yicheng Du ◽  
Jilei Zhang ◽  
Hossein Toghiani ◽  
Thomas E. Lacy ◽  
Yibin Xue ◽  
...  
Keyword(s):  
Fiber Bundle ◽  
Unsaturated Polyester ◽  
Kenaf Fiber ◽  
Bast Fiber ◽  
Fiber Loading ◽  
Polyester Composites ◽  
Kenaf Bast ◽  
Processing Techniques ◽  
Kenaf Bast Fiber

The Effect of Different Alkaline Treatment Condition on Flexural Properties of Kenaf Bast-Unsaturated Polyester Composite

2013 ◽  
Vol 795 ◽  
pp. 631-634 ◽  
Author(s):  
A.R. Rozyanty ◽  
M.Y. Nur Firdaus ◽  
M.A.A. Mohd Salleh ◽  
L. Musa
Keyword(s):  
Treatment Condition ◽  
Unsaturated Polyester ◽  
Alkaline Treatment ◽  
Flexural Properties ◽  
Kenaf Fiber ◽  
Bast Fiber ◽  
Polyester Composite ◽  
Kenaf Bast ◽  
Kenaf Bast Fiber ◽  
Composite Properties

The biocomposites were prepared by using kenaf bast fiber mat as reinforcing materials at different percentage. The kenaf bast fiber was treated with alkaline at different sodium hydroxide (NaOH) percentage. From the results obtained, surface morphology of the treated kenaf bast fiber shows less impurity than untreated kenaf bast fiber. As for composites prepared from alkaline treated kenaf bast fiber, it showed higher mechanical properties as compared to those prepared from untreated kenaf bast fiber. The percentage of kenaf fiber in composites also plays a crucial role in determining the composite properties.

Kenaf-Unsaturated Polyester Composite: The Effect of Different Retting Process of Kenaf Bast Fiber on the Mechanical Properties

2015 ◽  
Vol 819 ◽  
pp. 256-261 ◽  
Author(s):  
Abdul Rahman Rozyanty ◽  
M.Y. Nur Firdaus ◽  
T.Z. Liew ◽  
Nur Farhana M. Yunus
Keyword(s):  
Mechanical Properties ◽  
Interfacial Adhesion ◽  
Mechanical Test ◽  
Unsaturated Polyester ◽  
Fiber Breakage ◽  
Bast Fiber ◽  
Fiber Loading ◽  
Polyester Composite ◽  
Kenaf Bast ◽  
Kenaf Bast Fiber

Kenaf bast fiber reinforced unsaturated polyester composite was produced using kenaf bast fiber based on different retting process. There are two different retting method involved which are water and mechanical retting process. The composites were prepared by using hand lay-up method with different fiber loading (weight %) of 10, 15 and 20%. The mechanical test involved was tensile test and scanning electron microscope (SEM) was employed to investigate the fiber-matrix adhesion and fiber breakage. The result showed that the tensile properties of the composite increased as the fiber loading increased. Besides, the water-retted kenaf –UPE composites exhibited the highest mechanical properties as compared to mechanical-retted kenaf –UPE composites. While, the morphology analysis using SEM showed that water retted kenaf-UPE composite show better fiber distribution and better interfacial adhesion compared to mechanical retted kenaf-UPE composite.

scholarly journals Isolation of Alkalophilic Pectinolytic Bacteria and their Bio Retting Effect on Kenaf Fiber Compositions

2021 ◽  
Vol 36 (2) ◽  
pp. 156-165
Author(s):  
Munir Hossain ◽  
Shafiq Siddiquee ◽  
Vijay Kumar
Keyword(s):  
Crystallinity Index ◽  
Chemical Compositions ◽  
Test Results ◽  
Bacterial Strains ◽  
Kenaf Fiber ◽  
Bast Fiber ◽  
Gene Sequence Analysis ◽  
Paddy Land ◽  
Kenaf Bast ◽  
Kenaf Bast Fiber

Retting is the most limiting process of high-quality cellulosic kenaf bast fiber production which facilitating the separation of useable fiber from the plants' cell wall matrix. Existing traditional water retting approach confronts ineptitude and eutrophication related complications. Aiming to enhance the kenaf bio-retting process, sixty-seven alkalophilic bacterial colonies were isolated from paddy land soil sediments and kenaf retting water. These isolates were subsequently screened, of that two isolates were selected based on hyper qualitative and quantitative pectinolytic enzymatic measures. 16s rDNA gene sequence analysis revealed that both two strains were closely related to Bacillus pumilus species and designated as KRB56 and KRB22. These strains were applied in augmented non-sterile kenaf tank retting to investigate their kenaf retting efficiency and yielded fiber were analyzed for chemical compositions. Results revealed that, stains KRB56 and KRB22 significantly improve the retting process by degradation of 82.78% and 75.28% non-cellulosic gums, respectively comparing with uninoculated treatment niche (62.12%). Based on un retted raw kenaf fiber maximum fiber bundle weight was reported in MTW with 16.04% material losses, while the SW, and FW treatments showed 24.38%, and 21.03% material losses, respectively. These bacterial treated fiber samples showed thinner, smooth, and cleaner fibers surface morphology by SEM indicates sufficient non cellulosic gums (NCGs) removal comparing with URKF. Moreover, yielded fibers were examined for chemical composition, FTIR, XRD test. Results revealed that compare to un retted and un inoculated kenaf fiber, bacterial treated kenaf fiber increases cellulose portions, and their crystallinity index increases 35.50-41.30 % due to sufficient NCGs removal. This study's findings indicate that isolated alkalophilic bacterial strains KRB56 and KRB22 were effectively to be used as kenaf bio retting agents to produce quality kenaf fiber.

scholarly journals Influence of layering pattern of modified kenaf fiber on thermomechanical properties of epoxy composites

2019 ◽  
Vol 36 (1) ◽  
pp. 47-62
Author(s):  
AR Mohammed ◽  
MS Nurul Atiqah ◽  
Deepu A Gopakumar ◽  
MR Fazita ◽  
Samsul Rizal ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Chemical Modification ◽  
Epoxy Matrix ◽  
Epoxy Composites ◽  
Woven Composites ◽  
Fiber Reinforced ◽  
Kenaf Fiber ◽  
Kenaf Fibers ◽  
The Impact ◽  
Woven Kenaf

Natural fiber-reinforced composites gained considerable interest in the scientific community due to their eco-friendly nature, cost-effective, and excellent mechanical properties. Here, we reported a chemical modification of kenaf fiber using propionic anhydride to enhance the compatibility with the epoxy matrix. The incorporation of the modified woven and nonwoven kenaf fibers into the epoxy matrix resulted in the improvement of the thermal and mechanical properties of the composite. The thermal stability of the epoxy composites was enhanced from 403°C to 677°C by incorporating modified woven kenaf fibers into the epoxy matrix. The modified and unmodified woven kenaf fiber-reinforced epoxy composites had a tensile strength of 64.11 and 58.82 MPa, respectively. The modified woven composites had highest flexural strength, which was 89.4 MPa, whereas, for unmodified composites, it was 86.8 MPa. The modified woven fiber-reinforced epoxy composites showed the highest value of flexural modulus, which was 6.0 GPa compared to unmodified woven composites (5.51 GPa). The impact strength of the epoxy composites was enhanced to 9.43 kJ m−2 by the incarnation of modified woven kenaf fibers into epoxy matrix. This study will be an effective platform to design the chemical modification strategy on natural fibers for enhancing the compatibility toward the hydrophobic polymer matrices.

scholarly journals Layer Separation of Kenaf Bast Fiber and the Influence of Each Layer to the Kenaf Bast Paper Strength

2005 ◽  
Vol 59 (9) ◽  
pp. 1354-1366
Author(s):  
Yu Wang ◽  
Wiwin Suwinarti ◽  
Shinji Fujiwara ◽  
Kazuhiko Sameshima ◽  
Zhou Cheng
Keyword(s):  
Paper Strength ◽  
Bast Fiber ◽  
Layer Separation ◽  
Kenaf Bast ◽  
Kenaf Bast Fiber

Temperature and loading rate effects on tensile properties of kenaf bast fiber bundles and composites

2009 ◽  
Vol 40 (3) ◽  
pp. 189-196 ◽  
Author(s):  
Yibin Xue ◽  
Yicheng Du ◽  
Steve Elder ◽  
Kunpeng Wang ◽  
Jilei Zhang
Keyword(s):  
Tensile Properties ◽  
Loading Rate ◽  
Fiber Bundles ◽  
Bast Fiber ◽  
Rate Effects ◽  
Kenaf Bast ◽  
Kenaf Bast Fiber
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