Effect of silane treatment on tensile strength, moisture absorption and thermal property of unidirectional woven mat enset fibers reinforced polypropylene composite

2021 ◽  
pp. 1-21
Author(s):  
Esubalew Dessie ◽  
Liu Fanxizi ◽  
Tamrat Tesfaye ◽  
Rotich Kipchirchir Gideon ◽  
Adane Dagnaw Gudayua ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Thermal Property ◽  
Moisture Absorption ◽  
Silane Treatment ◽  
Polypropylene Composite

Effects of Silane Coupling Agent on Mechanical Properties and Swelling Behaviour of Coconut Fiber Filled Polypropylene Composite

2012 ◽  
Vol 626 ◽  
pp. 657-661 ◽  
Author(s):  
M. Sabri ◽  
F. Hafiz ◽  
K. Shahril ◽  
A. Siti Rohana ◽  
Salmah Husseinsyah
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Water Absorption ◽  
Silane Coupling Agent ◽  
Filler Loading ◽  
Silane Treatment ◽  
Coconut Fiber ◽  
Polypropylene Composite ◽  
Swelling Behaviour ◽  
Silane Coupling

Silane treatment used to improve mechanical properties and swelling behaviour of polypropylene/coconut fiber (PP/CF) composites by creating more adherent bonding between CF filler and PP Matrix. 3-Aminopropyltriethoxysilane (3-APE) treated and untreated composites were prepared in formulation of 10 wt%, 20 wt%, 30 wt%, and 40 wt%. The mechanical testing indicates that composite with 10 wt% has the optimum value of tensile strength, and the 3-APE treated composites shows the tensile strength was increased. By increasing of filler loading, elastic modulus was increased while the elongation at brake was decreased. Meanwhile, the swelling test discerned that the increase of filler loading increased the water absorption of composites and the presence of 3-APE reduced the equilibrium water absorption percentage.

scholarly journals RICE STRAW/THERMOPLASTIC COMPOSITE: EFFECT OF FILLER LOADING, POLYMER TYPE AND MOISTURE ABSORPTION ON THE PERFORMANCE

CERNE ◽  
2016 ◽  
Vol 22 (4) ◽  
pp. 449-456 ◽  
Author(s):  
Hossein Mohammadi ◽  
Seyedmohammad Mirmehdi ◽  
Lisiane Nunes Hugen
Keyword(s):  
Tensile Strength ◽  
Rice Straw ◽  
Moisture Absorption ◽  
Water Immersion ◽  
Filler Loading ◽  
Thermoplastic Composite ◽  
Modulus Of Rupture ◽  
Thermoplastic Composites ◽  
Composite Effect ◽  
Wet Condition

ABSTRAT Thermoplastic composites made with 45, 60 and 75% of rice straw as filler and two types of thermoplastics, virgin polyethylene (PE) and polypropylene (PP) were evaluated. The final boards were made with and without maleic anhydride modified polypropylene (MAPP) at 2% of the total weight of each specimen. The flexural and tensile strengths were measured for dry composites and also measured after 24 h of water immersion of the composites (wet condition). By increasing the filler content, the flexural and tensile strengths and also the density of the specimens decreased. The type of matrix (PE or PP) did not affect significantly the flexural strength, but PP led to higher values of tensile strength for low fiber loadings (45% and 60%). Coupling agents increased the flexural and tensile strength. After water immersion, modulus of elasticity and modulus of rupture were decreased, while tensile strength was less influenced.

scholarly journals Permeability studies of Damar Batu free films for transdermal application

2009 ◽  
Vol 15 (2) ◽  
pp. 83-88 ◽  
Author(s):  
Atish Mundada ◽  
Jasmine Avari
Keyword(s):  
Tensile Strength ◽  
Moisture Absorption ◽  
Chloroform Solution ◽  
Polyethylene Glycol 400 ◽  
Permeability Characteristics ◽  
Zero Order Kinetics ◽  
Transdermal Application ◽  
Model Drug ◽  
Free Films ◽  
Permeability Studies

Damar Batu (DB) looks like stone with black or dark brown color inside. Due to its film forming ability it is used in the manufacture of paper, wood, varnishes, lacquers, polishes and additives for beverages. In the present study the permeability of free films of DB casted from chloroform solution containing different plasticizers was studied with a view to developing a suitable rate controlling membrane for transdermal use. The free films of DB were prepared by a mercury substrate technique and dibutyl sebacate (DBS), dibutyl phthalate (DBP), polyethylene glycol 400 (PEG400) and propylene glycol (PG) were tried as plasticizers. DB films were then evaluated for uniformity of thickness, moisture absorption, water vapour transmission, tensile strength, percentage elongation and folding endurance. Permeability characteristics of free films of DB were studied using diltiazem hydrochloride (DH) as a model drug. Little variation in film thickness ensured the uniformity of the films. DBS produces tough DB films with more tensile strength. Drug diffusion through the free films followed zero order kinetics. The films plasticized with PEG400 showed higher permeability for DH compared with other films. The order of decrease of permeability of plasticized films with plasticizers was PEG400 > PG > DBP > DBS. Diffusion of drugs through the free films of DB was extended over a longer period of time at a controlled rate. DB seems to be a promising rate controlling membrane for the transdermal application.

scholarly journals On engineering of properties of wood-polypropylene composite

2006 ◽  
pp. 59-70 ◽  
Author(s):  
Milanka Djiporovic ◽  
Jovan Miljkovic ◽  
Eva Dingova
Keyword(s):  
Tensile Strength ◽  
Filler Content ◽  
Wood Flour ◽  
Beech Wood ◽  
Impact Resistance ◽  
High Strength ◽  
Polypropylene Composite ◽  
Elongation At Break ◽  
New Type ◽  
Polypropylene Matrix

New materials based on wood have the advantage in the sense that their properties can be engineered so as to correspond to user demands. The properties which can be engineered are those relating both to their utilisation and machining, in particular - the tensile strength, elongation at break, modulus of elasticity and impact resistance. The research at the Faculty of Forestry and "Hipol" Chemical Industry related to the new type of wood-polypropylene composite. The content of wood filler was varied in the range between 40% and 70% mass contents of beech wood flour. After the highest tensile strength at 50% of filler content was determined, the effect of the wood filler origin was also examined at this content value. Therefore, wood flour of beech, poplar, acetylated pine and the waste MDF was used. The influence of the composition of the wood filler (beech combined with MDF, poplar and acetylated pine) in comparison with pure polypropylene matrix was also examined, as well as the effect of the type of coupling agent. Hopefully, the results obtained in this study might serve as the initial data for production of easily machined high-strength composites.

scholarly journals Effect of Cinnamon Extraction Oil (CEO) for Algae Biofilm Shelf-Life Prolongation

Polymers ◽  
2018 ◽  
Vol 11 (1) ◽  
pp. 4 ◽  
Author(s):  
Maizatulnisa Othman ◽  
Haziq Rashid ◽  
Nur Jamal ◽  
Sharifah Shaharuddin ◽  
Sarina Sulaiman ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Shelf Life ◽  
Moisture Absorption ◽  
Morphological Structure ◽  
Strength Properties ◽  
Casting Technique ◽  
Swelling Rate ◽  
Solution Casting Technique ◽  
Algae Biofilm ◽  
Life Prolongation

This study was conducted to improve the life-span of the biofilm produced from algae by evaluating the decomposition rate with the effect of cinnamon extraction oil (CEO). The biofilm was fabricated using the solution casting technique. The soil burying analysis demonstrated low moisture absorption of the biofilm, thus decelerating the degradation due to low swelling rate and micro-organism activity, prolonging the shelf-life of the biofilm. Hence, the addition of CEO also affects the strength properties of the biofilm. The maximum tensile strength was achieved with the addition of 5% CEO, which indicated a good intermolecular interaction between the biopolymer (algae) and cinnamon molecules. The tensile strength, which was measured at 4.80 MPa, correlated with the morphological structure. The latter was performed using SEM, where the surface showed the absence of a separating phase between the biofilm and cinnamon blend. This was evidenced by FTIR analysis, which confirmed the occurrence of no chemical reaction between the biofilm and CEO during processing. The prolongation shelf-life rate of biofilm with good tensile properties are achievable with the addition of 5% of CEO.

Study on Properties about Bamboo Yarns

2011 ◽  
Vol 332-334 ◽  
pp. 45-48 ◽  
Author(s):  
Lin Tian ◽  
Lei Tan ◽  
Qing Bin Yang
Keyword(s):  
Tensile Strength ◽  
Abrasion Resistance ◽  
Moisture Absorption ◽  
Abrasive Resistance ◽  
Breaking Elongation ◽  
Initial Modulus ◽  
Cotton Yarns

In order to understand the basic performances of bamboo yarns, the tensile strength, abrasion resistance and hairiness of yarns are analyzed through the comparison of bamboo yarns, cotton yarns and ramie yarns. Bamboo yarns show a higher strength, a lower breaking elongation, a better abrasive resistance and an obvious hairiness. Because of the existence of uneven fineness, the strength of bamboo yarns display a higher level of unevenness than cotton yarns and ramie yarns. After moisture absorption, the strength, initial modulus and work to break will increase remarkably.

Structure and Physical Properties of Jade Fiber

2012 ◽  
Vol 441 ◽  
pp. 767-771 ◽  
Author(s):  
Shu Ling Cui ◽  
Jun Ping Zhu ◽  
Bao Mei Li ◽  
Shao Peng Wang ◽  
Ying Liu
Keyword(s):  
Physical Properties ◽  
Thermal Property ◽  
Tensile Property ◽  
Moisture Absorption ◽  
Morphological Structure

The purpose of this paper was to study the structure and the physical properties of jade fiber including morphological structure, crystallinity, moisture absorption, tensile property, electrostatic performance and thermal property.

scholarly journals Mechanical, Curing Parameters and Water Absorption of Hybrid Date Palm Leaf-Orange Peel Fibers Reinforced Unsaturated Polyester Composites

2021 ◽  
Vol 31 (3) ◽  
pp. 139-144
Author(s):  
Hamza Chelali ◽  
Ahmed Meghezzi ◽  
Abir Berkouk ◽  
Mohamed Toufik Soltani ◽  
George Winning
Keyword(s):  
Tensile Strength ◽  
Date Palm ◽  
Moisture Absorption ◽  
Natural Fiber ◽  
Alkali Treatment ◽  
Unsaturated Polyester ◽  
Natural Fibers ◽  
Orange Peel ◽  
Weight Fraction ◽  
Palm Leaf

In this study, polymer-hybrid natural fibers composites were prepared using unsaturated polyester resin (UPR) as the matrix and a filler using date palm leaf fiber (DPLF) and orange peel fiber (OPF). The effect of DPLF and OPF on mechanical behavior (tensile strength and elongation at break), moisture absorption, UPR gel time (tgel) and peak exothermic temperature (Tpeak) were determined. The composites of UPR reinforced with DPLF and OPF were processed by hand lay-up technique. The UPR weight fraction was maintained at 90%, and DPLF/OPF proportions varied so that the percentage of natural fiber was 10 wt%. Seven (07) composites were prepared (C1, C2, C3, C4, C5, C6 and C7) with different DPLF:OPF ratios (0:0, 1:0, 0.75:0.25, 0.5:0.5, 0.33:0.67, 0.25:0.75, 0:1) respectively in order to screen the possible interactions. DPLF were surface modified using 6% Alkali treatment, OPF were used without surface modification. Unlike DPLF, OPF showed considerable increase of UPR tgel and Tpeak which act as natural inhibitor. Tensile strength and fracture strength were also impacted negatively and positively depending on the different fiber proportions. Absorption tests showed a decrease in the composites hydrophobicity which increases significantly with higher DPLF proportions.

scholarly journals Properties of Biocomposite Film Based on Whey Protein Isolate Filled with Nanocrystalline Cellulose from Pineapple Crown Leaf

Polymers ◽  
2021 ◽  
Vol 13 (24) ◽  
pp. 4278
Author(s):  
Fitriani Fitriani ◽  
Sri Aprilia ◽  
Nasrul Arahman ◽  
Muhammad Roil Bilad ◽  
Hazwani Suhaimi ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Whey Protein ◽  
Food Packaging ◽  
Water Solubility ◽  
Moisture Absorption ◽  
Principal Component ◽  
Whey Protein Isolate ◽  
Protein Isolate ◽  
Nanocrystalline Cellulose ◽  
Casting Technique

Among the main bio-based polymer for food packaging materials, whey protein isolate (WPI) is one of the biopolymers that have excellent film-forming properties and are environmentally friendly. This study was performed to analyse the effect of various concentrations of bio-based nanocrystalline cellulose (NCC) extracted from pineapple crown leaf (PCL) on the properties of whey protein isolate (WPI) films using the solution casting technique. Six WPI films were fabricated with different loadings of NCC from 0 to 10 % w/v. The resulting films were characterised based on their mechanical, physical, chemical, and thermal properties. The results show that NCC loadings increased the thickness of the resulting films. The transparency of the films decreased at higher NCC loadings. The moisture content and moisture absorption of the films decreased with the presence of the NCC, being lower at higher NCC loadings. The water solubility of the films decreased from 92.2% for the pure WPI to 65.5% for the one containing 10 % w/v of NCC. The tensile strength of the films peaked at 7% NCC loading with the value of 5.1 MPa. Conversely, the trend of the elongation at break data was the opposite of the tensile strength. Moreover, the addition of NCC produced a slight effect of NCC in FTIR spectra of the WPI films using principal component analysis. NCC loading enhanced the thermal stability of the WPI films, as shown by an increase in the glass transition temperature at higher NCC loadings. Moreover, the morphology of the films turned rougher and more heterogeneous with small particle aggregates in the presence of the NCC. Overall, the addition of NCC enhanced the water barrier and mechanical properties of the WPI films by incorporating the PCL-based NCC as the filler.

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