Silane coupling agents used for natural fiber/polymer composites: A review

Xie, Yanjun; Hill, Callum A. S.; Xiao, Zefang; Militz, Holger; Mai, Carsten

doi:10.1016/j.compositesa.2010.03.005

Cited by 1,890 publications

(1,122 citation statements)

References 120 publications

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“…Therefore from Eqs. (1) and (2), MC = MC R for uncoated hemp shiv but for coated shiv MC is lower than MC R [33]. At the highest RH (90%), uncoated hemp shiv reached a MC of 19.41% whereas the values obtained for the MC of the coated shiv with 1 and 10 layers were 12.28% and 8.06%, respectively.…”

Section: Dynamic Vapour Sorptionmentioning

confidence: 80%

“…However, it should be noted that the maximum time allowed for each RH step to reach stability was 360 min. Previous studies have established that this value allows for obtaining equilibrium moisture content (EMC) values within 0.1% of the true equilibrium value [33]. The target RH, actual RH, running time and sample mass were recorded throughout the isotherm run.…”

Section: Dynamic Vapour Sorptionmentioning

confidence: 99%

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Modification of hemp shiv properties using water-repellent sol–gel coatings

Hussain

Calabria-Holley

Jiang

et al. 2018

J Sol-Gel Sci Technol

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For the first time, the hydrophilicity of hemp shiv was modified without the compromise of its hygroscopic properties. This research focused on the use of sol-gel method in preparation of coatings on the natural plant material, hemp shiv, that has growing potential in the construction industry as a thermal insulator. The sol-gel coatings were produced by cohydrolysis and polycondensation of tetraethyl orthosilicate (TEOS) using an acidic catalyst. Methyltriethoxysilane (MTES) was added as the hydrophobic precursor to provide water resistance to the bio-based material. Scanning electron microscopy (SEM) and focused ion beam (FIB) have been used to determine the morphological changes on the surface as well as within the hemp shiv. It was found that the sol-gel coatings caused a reduction in water uptake but did not strongly influence the moisture sorption behaviour of hemp shiv. Fourier transformed infrared (FTIR) spectroscopy shows that the coating layer on hemp shiv acts a shield, thereby lowering peak intensity in the wavelength range 1200-1800 cm −1 . The sol-gel coating affected pore size distribution and cumulative pore volume of the shiv resulting in tailored porosity. The overall porosity of shiv decreased with a refinement in diameter of the larger pores. Thermal analysis was performed using TGA and stability of coated and uncoated hemp shiv have been evaluated. Hemp shiv modified with sol-gel coating can potentially develop sustainable heat insulating composites with better hygrothermal properties. A novel method for modification of hemp shiv using sol-gel technology. Graphical Abstract• Coating layer acts as a breathable membrane allowing the hemp shiv to retain its hygric characteristics.• Hemp shiv coated with sol-gel monolayer reduces its water absorption capacity by 200%.• The effects of sol-gel coating on surface morphology, thermal stability and porosity of the shiv increase with increase in coating thickness.

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Section: Dynamic Vapour Sorptionmentioning

confidence: 80%

Section: Dynamic Vapour Sorptionmentioning

confidence: 99%

Modification of hemp shiv properties using water-repellent sol–gel coatings

Hussain

Calabria-Holley

Jiang

et al. 2018

J Sol-Gel Sci Technol

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“…The plant fiber is the representative organic matter among natural fibers, and inorganic matter is classified into mineral fiber, etc. Natural fibers being dealt with in this study are plant fibers such as flax, hemp, jute, sisal, agave, henequen, coir, etc [1]- [4].…”

Section: Investigation On Natural Fiber and Resinmentioning

confidence: 99%

Design of Natural Fiber Composites Chemical Container Using Resin Flow Simulation of VARTML Process

Kong¹,

Park²,

Lee³

et al. 2014

IJMMM

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Abstract-In this study, an investigation on mechanical properties of flax natural fiber composite is performed as a precedent study on the design of eco-friendly structure using flax natural fiber composite. The Vacuum Assisted Resin Transfer Molding-Light (VARTML) manufacturing method is adopted for manufacturing the flax fiber composite panel. The VARTML is a manufacturing process that the resin is injected into the dry layered -up fibers enclosed by a rigid mold tool under vacuum. In this work, the resin flow analysis of VARTM manufacturing method is performed. A series of flax composite panels are manufactured, and several kinds of specimens cut out from the panels are tested to obtain mechanical performance data. Based on this, structural design of chemical storage tank for agricultural vehicle was performed using flax/vinyl ester. After structural design and analysis, the resin flow analysis of VARTM manufacturing method was performed.Index Terms-Mechanical properties, natural composite, resin flow analysis, structural design.

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“…Without such a treatment, a coupling agents are an alternative way. It is known that coupling agents such as silane and olefin grafted maleic anhydride are an effective way to improve its dispersibility in polymer matrix as well, and hence ameliorate the polymer matrix, thus enhancing the properties of the resulting composites [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Morphology, Mechanical and Thermal Properties of PBT-TiO₂Polymer Nanocomposite

Metanawin

Jamjumrus

Metanawin

2015

MATEC Web of Conferences

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Abstract. This research aims to study the effects of the TiO2 in PBT composite fibers on the thermal properties, mechanical properties and photocatalytic properties of the polymer composite. The results showed that the tensile strength of the TiO2/PBT fibers decreased with increasing in the content of TiO2 in polymer matrix. The content of TiO2 in composite fibers did not affect the thermal properties of the fibers but the %crystalline of the composite fibers were increased with content of TiO2 in the composite fibers. The SEM images demonstrated that the TiO2 were well dispersed in the composite fibers. Moreover, some aggregation of the TiO2 in the composite fibers was found at high content of TiO2. The photocatalytic characteristic of the composite fiber was studied thought out self-cleaning properties. The presents of the content of TiO2 in the PBT fibers significantly showed the improving of the selfcleaning properties under UV-A radiation. The TiO2/PBT fibers in the presents of TiO2 10wt% showed the best results of self-cleaning under 168 hours of UV radiation.

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Silane coupling agents used for natural fiber/polymer composites: A review

Cited by 1,890 publications

References 120 publications

Modification of hemp shiv properties using water-repellent sol–gel coatings

Modification of hemp shiv properties using water-repellent sol–gel coatings

Design of Natural Fiber Composites Chemical Container Using Resin Flow Simulation of VARTML Process

Morphology, Mechanical and Thermal Properties of PBT-TiO₂Polymer Nanocomposite

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Silane coupling agents used for natural fiber/polymer composites: A review

Cited by 1,890 publications

References 120 publications

Modification of hemp shiv properties using water-repellent sol–gel coatings

Modification of hemp shiv properties using water-repellent sol–gel coatings

Design of Natural Fiber Composites Chemical Container Using Resin Flow Simulation of VARTML Process

Morphology, Mechanical and Thermal Properties of PBT-TiO2Polymer Nanocomposite

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Product

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Morphology, Mechanical and Thermal Properties of PBT-TiO₂Polymer Nanocomposite