Studies on wood-to-wood bonding adhesives based on natural rubber latex

Joseph, Rani

doi:10.1163/156856197x00327

Cited by 17 publications

(5 citation statements)

References 2 publications

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“…Various biomaterials have been a subject to researchers in adhesive field; these include, starch [9] [29], and cellulosic materials [30]- [39]. Cellulosic materials are a wide class of polysaccharide of glucosidic linkages.…”

Section: Introductionmentioning

confidence: 99%

Chemical Modification of Nanocellulose in Wood Adhesive: Review

Vineeth¹,

Gadhave²,

Gadekar³

2019

OJPChem

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Bio-based nanomaterial is more attractive, due to its abundance, eco-friendliness and sustainability, when compared to the non-renewable toxic petrochemicals used in the wood adhesive sector. Recent studies on the formaldehyde emission by petrochemical binders in wood adhesives have attracted scientists for the research in biomaterial-based binders. In this aspect nanocellulose (NC) is one such material which has reinforcing ability and has natural binding properties. Conventional wood adhesive uses petrochemical-based binders and additives. Inclusion of nanocellulose in wood adhesive could drastically reduce the dependency on non-renewable petroleum sources. Even though wood adhesive uses NC for improving mechanical properties of the adhesive, usage is restricted because of its inability to enhance tackiness and adhesion compared with petrochemicals. Availability of free hydroxyl groups and feasibility for modification can be a potential way for functionalization of this nanomaterial. To improve adhesion properties and to make nanocellulose act as a functional filler, the crosslinking approach can be a possible solution. Enhancement of thermal properties with improved thermal degradation, water barrier properties of crosslinked films and enhanced mechanical properties especially in crosslinked poly (vinyl alcohol) (PVA) matrix, which is one of the binders for wood adhesive discussed in this review paper proves the potential applicability of crosslinked NC. Hence by inclusion of NC in wood adhesive and crosslinking with the binder, both mechanical and performance properties are expected to enhance which will create a new world and possibilities for the bio-based eco-friendly wood adhesives. In this review paper, we have reviewed the crosslinking of nanocellulose to enhance the performance of wood adhesives.

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Section: Introductionmentioning

confidence: 99%

Chemical Modification of Nanocellulose in Wood Adhesive: Review

Vineeth¹,

Gadhave²,

Gadekar³

2019

OJPChem

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“…In wood‐to‐wood joinings, prevulcanization of the natural rubber latex‐based adhesives by mixing them with different amounts of ammonium caseinate, carboxymethylcellulose, baked starch, and PF resin increases the resistance of these adhesives to hot and cold water to a significant extent compared with commercial adhesives 8…”

Section: Introductionmentioning

confidence: 99%

The shear strength of Calabrian pine (Pinus brutia Ten.) bonded with polyurethane and polyvinyl acetate adhesives

Burdurlu

Kiliç

Elibol

et al. 2006

J of Applied Polymer Sci

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ABSTRACT:In this study, the change in shear strength on radial and tangential surfaces of Calabrian Pine (Pinus brutia Ten.) wood having different roughness values as the result of sawing with a circular ripsaw, planing and sanding, and bonded with polyurethane (PU) and polyvinyl acetate (PVAc) adhesives at the pressure levels of 3, 6, and 9 kgf/ cm 2 , was studied. Each of the 360 specimens prepared to determine the effect of the variables on bond performance were subjected to shear test in an universal test machine in accordance with the ASTM D 905-98 standards. The values obtained were analyzed statistically and the results were interpreted. The highest shear strength (11.83 N/mm 2 ) for plane of cut was obtained on the tangential surface after sanding and applying PVAc adhesive with a pressing pressure of 9 kgf/cm 2 . The lowest shear strength (6.01 N/mm 2 ) was obtained in the joinings made on the planed surfaces by using PU adhesive and a pressing pressure of 3 kgf/cm 2 .The highest shear strength (9.10 N/mm 2 ) on the radial surface was obtained after sanding and applying PVAc adhesive and pressing with a pressure of 6 kgf/cm 2 . The lowest shear strength (3.76 N/mm 2 ) was obtained in the specimens whose surfaces were sanded and glued with PU adhesive with a pressing pressure of 3 kgf/cm 2 . In general, in the radial surfaces, just like in the tangential surfaces, the specimens bonded with PVAc exhibited a higher shear strength compared with those glued with PU. According to these results, it is definitely necessary to sand the surfaces prior to the bonding process to have a higher shear strength. The bonding process should be made on the tangential surfaces with higher pressures. The PVAc adhesive should be preferred instead of the PU adhesive.

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“…The utilization of renewable feedstock as a source of raw materials for the manufacture of mo-nomers and their polymeric coatings and adhesives has recently attracted more scientific attention [1]. Researchers have a great interest in traditionally bio-based binders, such as starch [2] [3] [4] [5] [6], soy protein [7] [8] [9] [10] [11] or renewable rubber [12] [13] [14] [15], use of modified vegetable oils or lignin derivatives [16]- [22], and various cellulosic materials [23]- [32] for application in adhesive field. Cellulose is the most abundant renewable biomaterial among these biopolymers [33] and has a natural affinity for self-adhesion, which makes it a potential material in adhesion science.…”

Section: Introductionmentioning

confidence: 99%

Xanthan Gum—Bio-Based Raw Material for Wood Adhesive

Gadhave¹

2023

GSC

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Due to their lower environmental impact, ease of accessibility, low cost, and biodegradability, bio-renewable sources have been used extensively in the last several decades to synthesize adhesives, substituting petrochemical-based adhesive. Vegetable oils (including palm, castor, jatropha, and soybean oils), lactic acid, potato starch, and other bio-renewable sources are all excellent sources for the synthesis of adhesives that are being taken into consideration for the synthesis of "eco-friendly" adhesives. Due to their widespread use, accessibility, affordability, and biodegradability, biobased raw materials like carbohydrates used to synthesize wood and wood composite adhesive have gradually replaced petrochemical-based adhesive. Recently, xanthan gum, a naturally occurring polymer, has drawn the interest of scientists as a potentially petroleum source replacement. It possesses specific rheological characteristics, excellent water solubility, and stability to heat, and can be used as a binder, thickener, suspending agent, and stabilizer. Xanthan gum increases the adhesive strength in addition to increasing the viscosity of water-soluble adhesives. This article discusses xanthan gum as a potential substitute for traditional raw materials derived from petroleum that is used as a raw material for adhesives.

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Studies on wood-to-wood bonding adhesives based on natural rubber latex

Cited by 17 publications

References 2 publications

Chemical Modification of Nanocellulose in Wood Adhesive: Review

Chemical Modification of Nanocellulose in Wood Adhesive: Review

The shear strength of Calabrian pine (Pinus brutia Ten.) bonded with polyurethane and polyvinyl acetate adhesives

Xanthan Gum—Bio-Based Raw Material for Wood Adhesive

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