Surface treatment of lignocellulose biofiller for fabrication of sustainable polylactic acid biocomposite with high crystallinity and improved burning antidripping performance

Biodegradable plastic reinforced natural fiber composites are finding applications in many fields ranging from construction industry to food industry. The use of natural bio based fillers as reinforcements in composites has several advantages over inorganic fillers including lower density, renewability, and biodegradability. In this research, polylactic acid (PLA)/ microcrystalline cellulose (MCC) composites were investigated as a means to reduce the material cost and enhance the material properties. The coir fibers were used to prepare microcrystalline. Subsequently, the prepared MCC was treated with 3-amiopropyl triethoxysilane (APS) to improve interfacial adhesion between fiber and polymer matrix. Treated and untreated MCC were then mixed at 0-10 wt.% with PLA by twin-screw extruder and fabricated into test specimens by compression molding. The effects of MCC loading and surface treatment on morphology, mechanical properties, and thermal properties of PLA/MCC composites were investigated. The results showed that the PLA with 5 wt.% of MCC exhibited the best mechanical properties compared with all prepared composites. Thermal stability of PLA composites were decreased with increasing MCC content but it can be improved by treated the MCC with APS.

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Fiber-matrix interface improvement via glycidyl methacrylate compatibilization for rotomolded poly(lactic acid)/agave fiber biocomposites

Journal of Composite Materials ◽

10.1177/0021998320946821 ◽

2020 ◽

Vol 55 (2) ◽

pp. 201-212

Author(s):

Jorge Ramón Robledo-Ortíz ◽

Martín Esteban González-López ◽

Alan Salvador Martín del Campo ◽

Laura Peponi ◽

Rubén González-Nuñez ◽

...

Keyword(s):

Surface Treatment ◽

Polylactic Acid ◽

Glycidyl Methacrylate ◽

Raw Materials ◽

Substantial Reduction ◽

Poly Lactic Acid ◽

Matrix Interface ◽

Chemical Surface ◽

Fiber Matrix Interface ◽

Fiber Matrix

The growing interest in research and development of eco-friendlier materials makes attractive the use of bio-based and biodegradable polymers such as polylactic acid (PLA). However, the higher cost of PLA compared to conventional polymers limits its applications. Moreover, raw materials for rotational molding must be in a powder form, which further increases their cost. So, the main objective of this study was to use agave fibers to produce lower-cost PLA based rotomolded biocomposites (BC) without compromising its bio-sourced origin and to compare with a standard rotomolding resin: linear medium density polyethylene (LMDPE). To improve the fiber-matrix interface, a chemical surface treatment of the fibers with glycidyl methacrylate grafted polylactic acid (GMA-g-PLA) in solution was evaluated. The results showed that a better biocomposites’ morphology was obtained, especially with the fibers treated twice. The surface treatment was also shown to substantially improve the flexural and tensile properties of treated fiber biocomposites at higher fiber content (25% wt.) compared to those with untreated fiber. The surface treatment also led to a substantial reduction of the biocomposites porosity and water absorption. Overall, the samples were shown to have better mechanical properties than neat LMDPE while being eco-friendlier due to their bio-nature.

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Atmospheric pressure glow discharge plasma polymerization for surface treatment on sized basalt fiber/polylactic acid composites

Composites Part B Engineering ◽

10.1016/j.compositesb.2011.11.007 ◽

2012 ◽

Vol 43 (3) ◽

pp. 1010-1014 ◽

Cited By ~ 46

Author(s):

Denni Kurniawan ◽

Byung Sun Kim ◽

Ho Yong Lee ◽

Joong Yeon Lim

Keyword(s):

Glow Discharge ◽

Surface Treatment ◽

Polylactic Acid ◽

Atmospheric Pressure ◽

Plasma Polymerization ◽

Discharge Plasma ◽

Basalt Fiber ◽

Glow Discharge Plasma ◽

Atmospheric Pressure Glow Discharge ◽

Pressure Glow Discharge

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Areca Short Fiber Reinforced Polylactic Acid (PLA) Composites: Influence of Physical Treatment on Properties

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.d7921.118419 ◽

2019 ◽

Vol 8 (4) ◽

pp. 3063-3072

Keyword(s):

Surface Treatment ◽

Polylactic Acid ◽

Moisture Absorption ◽

Dielectric Strength ◽

Short Fiber ◽

Industrial Applications ◽

Physical Treatment ◽

Fiber Loading ◽

Biodegradable Composite ◽

Mechanical Tensile

There is growing need to develop new biodegradable composite material which are eco-friendly and at the same time cater to the product application requirements. The research emphasis on study the properties of composites prepared by arbitrarily distributed UV treated areca fibers with Polylactic acid. Ultraviolet – a physical surface treatment has been carried out to treat areca short fibers which have been extracted from areca husk. Surface treatment significantly improves the bond between the fiber- matrix interface. The preparation of test samples has been performed using plain Polylactic acid, Polylactic acid - untreated areca short fiber (PLA-UnASF) and Polylactic acid - UV treated areca short fiber (PLA-TrASF) as per ASTM standards by means of injection moulding method. Varying fiber loading viz., 10%, 20%, 30% and 40% by weight have been utilized to develop test specimens. Developed composites have been portrayed for properties like density, moisture absorption, mechanical - tensile strength and modulus, flexural strength and modulus, izod impact strength, hardness, electrical - dielectric strength, thermal – TGA and DSC and soil degradation. The results indicate an improvement in strengths of composite with increase in fiber loading and physically treatment. This new material can be utilized for house hold appliances, automobiles and industrial applications.

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Effect of Fiber Surface Treatment on Mechanical Properties of Polylactic Acid/Empty Fruit Bunch Fiber Biocomposites

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.875-877.171 ◽

2014 ◽

Vol 875-877 ◽

pp. 171-176

Author(s):

Senawi Rosman ◽

Mohd Alauddin Sakinah ◽

Mohd Salleh Ruzitah ◽

Mohammad Shueb. Iqbal

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Surface Treatment ◽

Sodium Hydroxide ◽

Polylactic Acid ◽

Flexural Modulus ◽

Fiber Surface ◽

Silane Treatment ◽

Empty Fruit Bunch ◽

Fiber Surface Treatment

Renewable resourced green biocomposites are currently receiving much attention due to their environmental advantages. Therefore, the aim of this research is study the effect of fiber surface treatment on the mechanical properties of polylactic acid (PLA) biocomposite in order to produce a green biocomposite. Experiments were conducted by surface treatment of empty fruit bunch fiber using two methods, sodium hydroxide and silane. Both treated and untreated fibers were then melt compounded with PLA and mechanical properties of the biocomposite was studied. The results showed that silane treatment improved the reinforced biocomposite mechanical properties such as tensile strength by 33% and flexural modulus by 44% compared with untreated fiber reinforced biocomposites. This is due to the silane functional groups that act as a bridge between the PLA and fiber.

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Improvement of Mechanical Properties of Polylactic Acid/Oil Palm Fiber Composites by Alkali Treatment

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.901.73 ◽

2020 ◽

Vol 901 ◽

pp. 73-78

Author(s):

Thikampon Srinara ◽

Nantawan Lowrattanaounjit ◽

Kantima Chaochanchaikul

Keyword(s):

Mechanical Properties ◽

Aspect Ratio ◽

Surface Treatment ◽

Polylactic Acid ◽

Oil Palm ◽

Alkali Treatment ◽

Suitable Condition ◽

Fiber Composites ◽

Optical Microscope ◽

Palm Fiber

The aim of this work is the improvement of mechanical properties of oil palm fiber (OPF) reinforced polylactic acid (PLA) composites by using sodium hydroxide (NaOH) treatment. NaOH concentrations (0 to 15 %wt.) and treatment times (0 to 30 min) were varied to determine the suitable condition for surface treatment of OPF. Aspect ratio (L/D) and the surface texture of OPF were investigated by using an optical microscope and scanning electron microscope (SEM), respectively. The result suggested that the most suitable condition for surface treatment of OPF was NaOH concentration of 10 %wt. at immersion time of 20 min. Aspect ratio and surface roughness of OPF increased after alkali treatment. For the effect of alkali treatment on the mechanical properties of the composite, it was evaluated by tensile and impact testings and SEM technique. The results showed that surface treatment with NaOH led to enhance mechanical properties of the composite due to improvement of interfacial adhesion.

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Surface treatment with silver particles isles on Titanium cp: study of antimicrobial activity

Research Society and Development ◽

10.33448/rsd-v9i4.2662 ◽

2020 ◽

Vol 9 (4) ◽

pp. e27942662

Author(s):

Patrícia Capellato ◽

Cláudia Eliana Bruno Marino ◽

Gilbert Silva ◽

Lucas Victor Benjamim Vasconcelos ◽

Rodrigo Perito Cardoso ◽

...

Keyword(s):

Antimicrobial Activity ◽

Surface Treatment ◽

Titanium Surface ◽

Silver Clusters ◽

Silver Particles ◽

Silver Deposition ◽

Dispersed Particles ◽

Significant Difference ◽

Diffusion Assay ◽

Antibacterial Potential

During the last decades, researchers have been growing the interest in surface treatment with an antimicrobial agent. Silver nanoparticles (AgNPs) are widely used in biomedical fields due to their potent antimicrobial activity. So, in this study was investigated silver particles (isles) coated on titanium surface for dental and orthopedic application. Silver particles coating process on titanium surface were performed via sputtering that is a plasma-assisted deposition technique with and titanium without treatment was applied as comparing standard. Plasma treatment parameters were optimized so that the result was not a thin film of Ag but dispersed particles of Ag on the Ti-cp surface. The alloy surfaces were investigated using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). In order to investigate antibacterial potential Staphylococcus aureus and Escherichia coli have been used at Agar diffusion assay. The results were analyzed by analysis of variance (ANOVA) in order to verify significant difference antimicrobial activity between samples that have shown no difference between the surfaces studied treatments. For silver deposition scattered particles (isles) over titanium surface for a 10-minute treatment, EDS revealed by silver clusters that the particles were not properly scattered onto surface, hence, the low effectiveness in antibacterial activity.

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