Innovation in poly(vinyl acetate) water resistant D3 glues used in wood industry

Chiozza, Fabio; Pizzo, Benedetto

doi:10.1016/j.ijadhadh.2016.06.003

Cited by 19 publications

(10 citation statements)

References 14 publications

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“…Wood assemblies were prepared by gluing beech thin boards of 640 mm x 125 mm x 5 mm. Each thin board was divided in two parts and, after spreading the adhesive on both sides, they were overlapped and put under the press to prepare the assembly (Chiozza & Pizzo, 2016 , respectively (wet weight). Wood assemblies were prepared by gluing beech thin boards of 640 mm x 125 mm x 5 mm.…”

Section: Methodsmentioning

confidence: 99%

“…Wood assemblies were prepared by gluing beech thin boards of 640 mm x 125 mm x 5 mm. Each thin board was divided in two parts and, after spreading the adhesive on both sides, they were overlapped and put under the press (8 kg cm by spreading the glue on each side of the assembly) unless specified otherwise (Chiozza and Pizzo, 2016).…”

Section: Methodsmentioning

confidence: 99%

“…The choice of a specific adhesive for use depends on several criteria in application, such as final use, required performances, costs, application process, and environmental issues. Among the thermoplastic polymers, water-based poly(vinyl acetate) (PVAc) dispersions are the most used as the basis for glues to be used with wood and wood products (Chiozza & Pizzo, 2016, 2013a, 2013b.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Adhesive Strength of Pilot-Scale-Produced Water-Washed Cottonseed Meal in Comparison with a Synthetic Glue for Non-Structural Interior Application

He¹,

Chiozza²

2017

JMSR

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Water-washed cottonseed meal (WCSM) has been shown the potential to be used as renewable and environmentfriendly adhesives in wood products industry. Recently, WCSM was produced from defatted meal in a pilot scale. In this study, we initially compare the adhesive strength of the pilot-produced WCSM with that of a synthetic glue Vinavil 2259 L. WCSM may be used as the conventional D1 wood adhesives for nonstructural interior application per European standard EN204/205. Non-structural D3 type adhesives is more widely used in protected outside. Under the testing conditions, WCSM possessed very high heat resistance according to European standard EN14257 (WATT 91)-adhesive strength after 1 hour at 80°C. However, the dry strength (EN204/205) and water resistance (specimen were put in water for 4 days and then pulled in the dynamometer) of WCSM were lower than those of the synthetic glue Vinavil 2259 L. Blending WCSM with Vinavil 2259 L improved the water resistance of WCSM, allowing the classification of the WCSM adhesive as D3. Further work will be focused on the increase of solid content of the final adhesive slurries and the improvement of their water resistance.

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Section: Methodsmentioning

confidence: 99%

“…Wood assemblies were prepared by gluing beech thin boards of 640 mm x 125 mm x 5 mm. Each thin board was divided in two parts and, after spreading the adhesive on both sides, they were overlapped and put under the press (8 kg cm by spreading the glue on each side of the assembly) unless specified otherwise (Chiozza and Pizzo, 2016).…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Adhesive Strength of Pilot-Scale-Produced Water-Washed Cottonseed Meal in Comparison with a Synthetic Glue for Non-Structural Interior Application

He¹,

Chiozza²

2017

JMSR

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“…The research conducted on PVAc adhesives focused on improving thermal or mechanical performance, such as shear strength and thermal stability. It is mainly realized by copolymerization of vinyl acetate with different monomers or blending it with other adhesives or hardeners Chiozzaa and Pizzo 2016;Šedivka et al 2015). This can also be achieved by the addition of suitable additives, for instance nano-clay (Moya et al 2015), cellulose nanofibers (Chaabouni and Boufi 2017), nano-TiO 2 and nano-SiO 2 (Bardak et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Impact of melamine and its derivatives on the properties of poly(vinyl acetate)-based composite wood adhesive

et al. 2020

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A fire retardant composite adhesive for bonding wood and wood-based elements has been developed and characterized. To obtain the enhanced fire-proof properties of the wood adhesive dispersion based on the poly(vinyl acetate) (PVAc), ceramic fillers (17.5 wt% total)—alumina, silica, kaolin and glass fibers were applied. Moreover, fire retardants such as melamine, melamine phosphate and melamine polyphosphate (up to 7 wt%) were also used. Thermal analysis (TG-DSC), strength tests, rheology, pH and flammability measurements (PCFC) were performed. The best properties of the adhesive were achieved for ceramic additives supported by melamine phosphate. A slight improvement of shear strength, shift of the last decomposition step of PVAc (residue degradation) towards higher temperatures by about 50 °C, reduction in mass loss from 100 wt% to less than 70 wt% and about 30–40% improvement of flammability parameters such as heat release capacity, total heat release or peak heat release rate were found compared to the pure poly(vinyl acetate) adhesive.

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“…The core-shell structured PVAc/PS particles might retain the excellent film-forming and adhesion properties of PVAc latex, in the meantime, the resistance of PVAc to water, heat, and creep can be improved by the embedded PS shells. However, it is well known that VAc and St do not copolymerize due to the unfavorable reactivity ratios and the difference between their kinetics (one polymerizes slowly, the other rapidly) and physical properties (one hydrophobic, the other hydrophilic; one with a high glass transition temperature, the other low) [19,20,21,22]. Therefore, a simple combination by co-polymerization VAc and St was difficult to achieve even in core-shell emulsion polymerization.…”

Section: Introductionmentioning

confidence: 99%

Effect of Shell Growth on the Morphology of Polyvinyl Acetate/Polystyrene Inverted Core-Shell Latex Fabricated by Acrylonitrile Grafting

et al. 2018

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A novel strategy for fabricating inverted core-shell structured latex particles was implemented to investigate the morphology and properties of polyvinyl acetate (PVAc)-based latex. In this study, active grafting points were synthesized onto the surface of PVAc latex cores via grafting acrylonitrile (AN) to obtain a controllable coating growth of the shell monomer, styrene (St). The effect of shell growth on the morphological evolvement was explored by tuning the time of shell monomer polymerization. Unique particle morphologies, transferring from “hawthorn” type, over “peeled pomegranate” type, to final “strawberry-like” type, were observed and verified by electron microscopy. The morphological structure of latex particles exerted a significant effect on the particle size, phase structure, and mechanical properties of the obtained emulsions. The water-resistance of PVAc-based latex was also evaluated by the water absorption of latex films. More importantly, the experimental results provided a reasonable support for the controlled growth of St monomer, that is, the self-nucleation of dispersive St monomer can be transformed to in-situ coating growth on the PVAc core surface depending on the AN-active grafting points. This fabricating approach provides a reference for dynamical design and control of the latex particle morphology.

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Innovation in poly(vinyl acetate) water resistant D3 glues used in wood industry

Cited by 19 publications

References 14 publications

Adhesive Strength of Pilot-Scale-Produced Water-Washed Cottonseed Meal in Comparison with a Synthetic Glue for Non-Structural Interior Application

Adhesive Strength of Pilot-Scale-Produced Water-Washed Cottonseed Meal in Comparison with a Synthetic Glue for Non-Structural Interior Application

Impact of melamine and its derivatives on the properties of poly(vinyl acetate)-based composite wood adhesive

Effect of Shell Growth on the Morphology of Polyvinyl Acetate/Polystyrene Inverted Core-Shell Latex Fabricated by Acrylonitrile Grafting

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