Improvement of the bonding properties of cassava starch-based wood adhesives by using different types of acrylic ester

Wang, Zhenjiong; Zhu, Hua; Huang, JunNan; Zan, Ge; Guo, Jing; Feng, Xiangyu; Xu, Qing

doi:10.1016/j.ijbiomac.2018.12.113

Cited by 29 publications

(10 citation statements)

References 24 publications

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“…Various possibilities are exploited in enhancing properties of wood adhesives such as, silane modification of starch-based wood adhesives [49], esterification of starch for wood adhesives, addition of acrylic ester as co-monomer to starch [12] and crosslinking. Many studies on crosslinking of wide range of biomaterials for improvement in properties of wood adhesives have been reported [6],…”

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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“…Normally, native starch granules are elliptical, have a smooth surface, and range from 1 to 100 μm in size [ 46 ]. Modification can result in the granules becoming irregular in shape with pronounced surface roughness, especially at high degrees of substitution (DS) [ 46 , 47 , 48 ].…”

Section: Esterified Starchmentioning

confidence: 99%

“…Graft copolymers produced from addition of vinyl- or other monomeric acrylates show improved water resistance and shear strength over natural starch [ 92 ]. The use of two co-monomers (vinyl acetate and butyl acrylate) resulted in starch adhesives exhibiting improved shear strength, and requiring lower film-forming temperatures, than those of natural starch [ 48 , 93 ]. Such adhesives retain the biodegradable profile of natural starch while being less hydrophilic, exhibit greater tensile strengths, and maintain a better appearance over time [ 94 ].…”

Section: Other Modified Starches For Adhesive Applicationsmentioning

confidence: 99%

Modified Starch-Based Adhesives: A Review

et al. 2022

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Consumer trends towards environmentally friendly products are driving plastics industries to investigate more benign alternatives to petroleum-based polymers. In the case of adhesives, one possibility to achieve sustainable production is to use non-toxic, low-cost starches as biodegradable raw materials for adhesive production. While native starch contains only hydroxyl groups and has limited scope, chemically modified starch shows superior water resistance properties for adhesive applications. Esterified starches, starches with ester substituents, can be feasibly produced and utilized to prepare bio-based adhesives with improved water resistance. Syntheses of esterified starch materials can involve esterification, transesterification, alkylation, acetylation, succinylation, or enzymatic reactions. The main focus of this review is on the production of esterified starches and their utilization in adhesive applications (for paper, plywood, wood composites, fiberboard, and particleboard). The latter part of this review discusses other processes (etherification, crosslinking, grafting, oxidation, or utilizing biobased coupling agents) to prepare modified starches that can be further applied in adhesive production. Further discussion on the characteristics of modified starch materials and required processing methods for adhesive production is also included.

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“…Release of unreacted formaldehyde in bonded wood occurs under hot and humid conditions [4] [5]. Various biomasses have been exploited as green adhesives including cellulose [6]- [12], starch [13] [14] [15], lignin [16] [17] [18], tannin [19] [20] [21], natural rubber latex [22] [23], soy protein [24] [25] [26] and vegetable oils [27]. Researchers' acceptance of these biomaterials is due to the added advantages of renewability, eco friendliness, and very low emission of volatile organic solvents in adhesives [28] [29].…”

Section: Introductionmentioning

confidence: 99%

Cellulose Stabilized Polyvinyl Acetate Emulsion: Review

Dhawale¹,

Vineeth²,

Gadhave³

et al. 2021

OJOPM

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The global energy crisis and overconsumption of non-renewable resources have depleted natural resources, climatic changes with global warming, and rise in sea level. The research on alternate sources and chemicals has resulted in the usage of green materials. These biomaterials are sustainable sources, biodegradable, and are abundant in nature. The replacement of petrochemicals with biopolymers has gained much importance in this aspect. Conventionally, polyvinyl alcohol is employed as a protective colloid in polyvinyl acetate adhesive. Polyvinyl alcohol has the limitation of petroleum origin, is replaced by biopolymers. Starch being a biopolymer, has gained interest in replacing polyvinyl alcohol as a stabilizer. Cellulose has a low cost, and the most abundant biomaterial finds application as a reinforcing agent in conventional adhesives. Exploring cellulose as a stabilizer for polyvinyl acetate emulsion polymerization with reinforcement has created potential applicability of cellulose in adhesives. Surface hydroxyl groups in cellulose act as sites for functionalization, making it material for the adhesive sector. This review paper aims to showcase biomaterials, namely starch, and cellulose, in the adhesive field. A detailed review of cellulose as functional filler for polyvinyl acetate emulsion adhesives has been explained.

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Improvement of the bonding properties of cassava starch-based wood adhesives by using different types of acrylic ester

Cited by 29 publications

References 24 publications

Chemical Modification of Nanocellulose in Wood Adhesive: Review

Chemical Modification of Nanocellulose in Wood Adhesive: Review

Modified Starch-Based Adhesives: A Review

Cellulose Stabilized Polyvinyl Acetate Emulsion: Review

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