Experimental Investigation of the Thermoplastic Tapioca Starch/Sisal Fiber Composites

2011 ◽  
Vol 221 ◽  
pp. 586-591 ◽  
Author(s):  
Xian Zhong Mo ◽  
Yu Xiang Zhong ◽  
Jin Ying Pang ◽  
Ting Guo ◽  
Xiang Qi
Keyword(s):  
Fiber Composites ◽  
Fiber Content ◽  
Sisal Fiber ◽  
Cellulose Crystallinity ◽  
Mass Ratio ◽  
Elongation At Break ◽  
Tapioca Starch ◽  
X Ray ◽  
The Matrix ◽  
Thermal Stability Of

As the matrix of sisal fiber, thermoplastic tapioca starch(TPS) was prepared with the mixed plasticizer, formamide and urea (mass ratio 2:1). X-ray diffractograms showed that with increasing fiber content(below 30phr), cellulose crystallinity at 22.5° gradually got stronger but starch crystallinity at 15.3°, 17.1°, 18.2°, 23.5° already disappeared, showed that this matrix still restrained the retrogradation of starch. SEM micrographs showed good dispersion and adhesion between starch and fiber. Studies in the dependence of mechanical properties of reinforced TPS on the fiber content from 0 to 30phr, the initial tensile strength was quadrupled up to the maximum 21.83MPa at 20phr fiber content, while the elongation at break was reduced from 72% to 0.44%. TG mass loss curves showed that thermal stability of this composites had great improved under 500°C.

Study on the Preparation and Properties of Thermoplastic Tapioca Starch / Magnesium Hydroxide Composites

2011 ◽  
Vol 221 ◽  
pp. 278-282 ◽  
Author(s):  
Xian Zhong Mo ◽  
Yu Xiang Zhong ◽  
Xiang Qi ◽  
Chen Mo
Keyword(s):  
Mechanical Properties ◽  
Magnesium Hydroxide ◽  
Oxygen Index ◽  
Mass Ratio ◽  
Elongation At Break ◽  
Tapioca Starch ◽  
Limited Oxygen Index ◽  
High Level ◽  
Thermal Stability Of ◽  
Limited Oxygen

Thermoplastic tapioca starch(TPS) was prepared with the mixed plasticizer, formamide and urea (mass ratio 2:1). The introduction of magnesium hydroxide(MH) in TPS could rapidly increase processing torque on a high level(40~60Nm) at 130°C. Studies in the dependence of mechanical properties of thermoplastic tapioca starch/magnesium hydroxide composites(MHTPS) on the MH content from 0 to 20phr, the initial tensile strength and elastic modulus were increased up to the maximum 3247 MPa and 48.5 MPa at 20phr MH content respectively, while the elongation at break was reduced from 72% to 2.5%. TG mass loss curves showed that thermal stability of this composites had great improved under 500°C. The limited oxygen index(LOI) of MHTPS reached to 31% while the content of Mg(OH)2 was 20phr, and then the result of vertical flame testing achieved UL94 V-0 level.

Studies on the Properties of Banana Fibers-Reinforced Thermoplastic Cassava Starch Composites: Preliminary Results

2009 ◽  
Vol 87-88 ◽  
pp. 439-444 ◽  
Author(s):  
Xian Zhong Mo ◽  
Yu Xiang Zhong ◽  
Chun Qun Liang ◽  
Shu Juan Yu
Keyword(s):  
Peak Torque ◽  
Thermoplastic Starch ◽  
Cassava Starch ◽  
Fiber Content ◽  
Banana Fiber ◽  
Elongation At Break ◽  
X Ray ◽  
Banana Fibers ◽  
Hydrogen Peroxide Treatment ◽  
Thermal Stability Of

Banana fibers received four treatments, namely squeezing, alkali and hydrogen peroxide treatment, washing with water, and drying. Thermoplastic starch composites was prepared with glycerol as the plasticizer, banana fiber as reinforcement and thermoplastic cassava starch as matrix. The banana fiber could increase processing torque highly, while the effects of fiber contents on peak torque at 3min was so obvious. X-ray diffractograms illustrated that with increasing fiber content, cellulose crystallinity at 22.5° gradually got stronger but starch crystallinity at 20° almost didn’t. SEM micrographs showed good dispersion and adhesion between starch and fiber. Studies in the dependence of mechanical properties of reinforced TPS on the contents of fiber that with increasing fiber content from 0 to 20phr, the initial tensile strength was trebled up to 14.46 MPa, while the elongation at break was reduced from 68 to 13%. TG mass loss curves showed that thermal stability of this composites had great improved under 500°C.

Properties of Hydroxyapatite from Bovine Teeth

2009 ◽  
Vol 2 ◽  
pp. BTRI.S3728 ◽  
Author(s):  
Aida Elkayar ◽  
Yehia Elshazly ◽  
Mariana Assaad
Keyword(s):  
Crystal Structure ◽  
Nanoporous Structure ◽  
Preparation Process ◽  
X Ray Diffraction ◽  
X Ray ◽  
The Matrix ◽  
Ft Ir ◽  
Ir Study ◽  
Thermal Stability Of ◽  
Electronic Microscope

The objective of this work was to study the production of hydroxyapatite (HA) from bovine teeth. Hydroxyapatite (HA) was produced from bovine teeth powder after calcination at 1150 °C. It was discovered that the sample preparation process influences its properties, so, crystal structure and thermal stability of HA were investigated. The X-Ray diffraction analysis (XRD) results confirmed that HA has been successfully produced. Fourier transform infrared spectroscopic (FT-IR) study confirmed the presence of hydroxyl (OH) and phosphate (PO4−3) functional groups. The scanning electronic microscope (SEM) was employed to identify the surface morphology of HA, and showed the nanoporous structure throughout the matrix. The sample constituents such as Ca, P, K … etc., and their values were determined by Energy dispersive X-Ray (EDX).

scholarly journals Effect of Fiber Content and Screw Speed on Mechanical Characterization of Sisal Fiber Reinforced Polypropylene Composites

2019 ◽  
Vol 8 (6S4) ◽  
pp. 9-13
Keyword(s):  
Fiber Content ◽  
Sisal Fiber ◽  
Screw Speed ◽  
Polypropylene Composites ◽  
Plastic Composite ◽  
The Matrix ◽  
High Interaction ◽  
High Level ◽  
The Impact ◽  
Mechanical Extraction

The present paper researches the impact of differing fiber content and speed on tensile flexural, HDT and effect properties of characteristic fiber (sisal) fortified polypropylene composites (NF). The support fiber (Sisal-Fiber) was gathered from the foliage of locally accessible tree through the procedure of water retting and mechanical extraction. Poor adhesion among fiber and matrix is regularly experienced issue in characteristic fiber-strengthened composites and to conquer this issue, physical and substance medicines were performed for surface adjustment of fibers. The expansion of compatibilizer to the matrix like, is enhanced the adhesion attributes of the fiber. The outcomes it proposes that the high level of fibers combined with a higher screw speed improves the mechanical properties of the Sisal Fiber-Polypropylene plastic composite due to a high interaction between the fiber and the matrix and an even distribution of the fiber in the matrix.

scholarly journals Preparation and Characterization of Durian Husk Fiber Filled Polylactic Acid Biocomposites

2018 ◽  
Vol 152 ◽  
pp. 02007 ◽  
Author(s):  
Man Chee Lee ◽  
Seong Chun Koay ◽  
Ming Yeng Chan ◽  
Ming Meng Pang ◽  
Pui May Chou ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Polylactic Acid ◽  
Natural Fiber ◽  
Fiber Content ◽  
Raw Material ◽  
Elongation At Break ◽  
Renewable Raw Material ◽  
The Cost ◽  
Thermal Stability Of

Polylactic acid (PLA) is biodegradable thermoplastic that made from renewable raw material, but its high cost limited the application. Thus, addition of natural fiber can be effectively reduced the cost of PLA. This research is utilised natural fiber extracted from durian husk to made PLA biocomposites. This paper is focus on the effect of fiber content on tensile and thermal properties of PLA/durian husk fiber (DHF) biocomposites. The results found that the tensile strength and modulus of this biocomposites increased with increase of fiber content, but the strength still lower compared to neat PLA. Then, the elongation at break of biocomposites was expected decreased at higher fiber content. The PLA/DHF biocomposites with 60 phr fiber content exhibited tensile strength of 11 MPa, but it is too brittle yet for any application. The addition of DHF caused an early thermal degradation on PLA biocomposites. Then, the thermal stability of PLA biocomposites was decreased with more fiber content.

scholarly journals Characterization of Polypropylene post-consume / Banana Fiber Composites

2018 ◽  
Vol 6 (1) ◽  
Author(s):  
Ariadne Gonçalves De Leão ◽  
Patricia Soares da Costa Pereira ◽  
Daniele Cruz Bastos
Keyword(s):  
Melt Flow Index ◽  
Fiber Composites ◽  
Flow Index ◽  
Slight Reduction ◽  
Banana Fiber ◽  
Chemically Modified ◽  
The Matrix ◽  
Banana Fibre ◽  
Thermal Stability Of

In this study, banana fibre surfaces were chemically modified and composites using polypropylene as a matrix were prepared. The FTIR analysis confirmed that the esterification increased the crystallinity and thermal stability of the acetylated fibres. Composites showed a decrease in the melt flow index and a slight reduction in density and hardness in relation to the matrix. Good matrix/fibre adhesion was observed by SEM micrographs.

Mechanical Properties of TPNR-MWNTs-OMMT Hybrid Nanocomposites

2012 ◽  
Vol 501 ◽  
pp. 194-198 ◽  
Author(s):  
Mou'ad A. Tarawneh ◽  
Sahrim H. Ahmad ◽  
A.R. Shamsul Bahri ◽  
Yu Lih Jiun
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Aspect Ratio ◽  
Interfacial Adhesion ◽  
Hybrid Nanocomposites ◽  
X Ray Diffraction ◽  
Elongation At Break ◽  
X Ray ◽  
Maximum Value ◽  
The Matrix

This paper discusses the processing of a hybrid of TPNR-MWNTs-OMMT nanocomposites with different percentages of filler to determine the optimum mechanical properties of the hybrid nanocomposites. Three types of hybrid nanocomposites with various MWNTs-OMMT compositions (1%wt MWNTs+3%wt OMMT), (2%wt MWNTs+2%wt OMMT) and (3%wt MWNTs+1%wt OMMT) were prepared. The OMMT layers were found to be separated further with higher nanotubes content as exhibited by X-ray diffraction. The result of tensile test showed that tensile strength and Young's modulus increase in the presence of nanotubes and maximum value were obtained for the nanocomposites with highest nanotubes (3%wt) which increased about 33% and 36%, respectively compared with pure TPNR matrix. On other hand, the elongation at break considerably decreased with increasing the percentage of MWNTs. TEM micrographs revealed aspect ratio and fillers orientation in the TPNR matrix also promoted strongly to interfacial adhesion between fillers and the matrix which contributed significantly to the improvement of the mechanical properties

scholarly journals THE EFFECT OF FIBER CONTENT ON COTTON REINFORCED ALBUMEN COMPOSITES

2011 ◽  
Vol 12 (2) ◽  
pp. 131-144 ◽  
Author(s):  
Yusof Yusliza ◽  
Ahmad Zuraida
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Tensile Strength ◽  
Cotton Fiber ◽  
Mechanical Performance ◽  
Impact Resistance ◽  
Morphological Structure ◽  
Fiber Content ◽  
X Ray ◽  
Thermal Stability Of

ABSTRACT : The effect of fiber content on mechanical properties and thermal stability of the cotton/albumen composites (CAC) were investigated and presented in this paper. The composites having 0%, 3%, 6%, 10%, 13 %, and 16% w/w of cotton fiber were considered.  Hands lay-up technique was used to prepare the CAC specimens and dried for 24 hours before characterised and evaluated for their mechanical performance. The structure and thermal stability of the composites were characterized by using x-ray and thermogravimetry analysis, respectively. The tensile strength and impact resistance of CAC are found maximum with the value of 8.7 MPa and 19.0 kJ/m2, respectively. Analysis on the morphological structure by SEM revealed that the mechanical properties of the composites depend on good wettability and adhesion between fiber/matrix.

scholarly journals Flexural Performance of Sisal Fiber Reinforced Foamed Concrete under Static and Fatigue Loading

Materials ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3098
Author(s):  
Jun Huang ◽  
Guoxin Tian ◽  
Peiyan Huang ◽  
Zhanbiao Chen
Keyword(s):  
Mechanical Properties ◽  
Fatigue Life ◽  
Bending Strength ◽  
Fatigue Loading ◽  
Fiber Content ◽  
Sisal Fiber ◽  
Flexural Performance ◽  
Linear Relationships ◽  
The Matrix ◽  
Foamed Concrete

To improve the weak mechanical properties of the foamed concrete that resulted from a large number of pores, a plant fiber is used as fill with the matrix. In this study, five contents of sisal fiber are added into the foamed concrete to investigate the static and fatigue performance of composites. The static and fatigue experimental results show that the sisal fiber can improve the mechanical properties of the foamed concrete. When the content of sisal fiber is less than 0.15%, the higher the content of sisal fiber, the greater the bending strength and fatigue life of the foamed concrete. In contrast, if the sisal fiber content is larger than 0.15%, the bending strength and fatigue life decrease with the increasing fiber content. From the regression analyses, the results show that the double linear relationships exist not only between the sisal fiber content and the flexural strength, but also between the sisal fiber content and the fatigue life of the foamed concrete. In this study, the optimal content of sisal fiber mixed in the foamed concrete can be inferred to be 0.133%.

Preparation and Characterization of Cassava Starch-Chitosan/Montmorillonite Nanocomposites

2011 ◽  
Vol 194-196 ◽  
pp. 484-487 ◽  
Author(s):  
Xian Zhong Mo ◽  
Chen Mo ◽  
Xiang Qi ◽  
Ren Huan Li
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Tensile Strength ◽  
Cassava Starch ◽  
Elongation At Break ◽  
The Matrix ◽  
Mechanical Properties Testing ◽  
Thermal Stability Of ◽  
Xrd And Tem

Biopolymer cassava starch(ST)-chitosan(CS)/montmorillonite(MMT) nanocomposites were prepared in which MMT was used as nanofiller and diluted acetic acid was used as solvent for dissolving and dispersing cassava starch, chitosan and MMT. XRD and TEM results indicated the formation of an exfoliated nanostructure of ST-CS/MMT nanocomposites. Mechanical properties testing revealed that at the range of the MMT content from 1wt% to 5wt%, tensile strength of the composites increased from 30MPa to 37.5MPa. But the elongation at break fall from 28% to 22% with the increasing of MMT. Obviously, MMT had an enforced effect to the composites. TGA results showed that the nano-dispersed MMT improved the thermal stability of the matrix systematically with the increasing of MMT.

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