Storage stability of polyamidoamine-epichlorohydrin resin and its effect on the properties of defatted soybean flour-based adhesives

Gao, Daqian; Fan, Bin; Zhang, Binghan; Mi, Yan; Gao, Zhenhua

doi:10.1016/j.ijadhadh.2019.03.006

Cited by 58 publications

(30 citation statements)

References 34 publications

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“…Poplar plywood was prepared by SPWAs, and its dry/wet shear strength was evaluated (Figure 5a). Generally, the high hydrophilicity of soy 29 (2) SF-EGDE, 51 (3) SF-PAE-LB, 52 (4) SF-XSBRL, 53 (5) DSF-SBAM, 54 (6) SBA-WPU, 46 protein makes the interaction between the protein and wood prone to mechanical unlocking and hydrogen bond breaking under humid conditions, resulting in poor water resistance. As shown in Figure 5b, FA-cross-linked SPWAs displayed excellent dry/wet shear strengths, which were all higher than that of the pristine SP adhesive and could meet the requirements of plywood according to GB/T 9846-2015 (indoor type II plywood standard ≥ 0.7 MPa).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Fully Biobased Soy Protein Adhesives with Integrated High-Strength, Waterproof, Mildew-Resistant, and Flame-Retardant Properties

Liu

Guo

et al. 2022

ACS Sustainable Chem. Eng.

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The low comprehensive properties of soy proteinbased wood adhesives (SPWAs), such as weak bonding strength, poor water and mildew resistance, etc., are the main issues that severely restrict their wide application in the wood manufacturing industry. In this study, fully biobased SPWAs with excellent bonding strength, water and mildew resistance, and flame retardancy were developed via a facile cross-linking reaction between soy protein isolate (SPI), furfuryl alcohol (FA), and phytic acid (PA). Because SPI, FA, and PA were all derived from green and sustainable biomass resources, the components of this kind of SPWAs achieved 100% biomass content. Response surface methodology (RSM) was utilized to optimize the preparation of SPWAs, and the predicted values were highly consistent with the experimental results. The optimized SPWA with a pH of 4.0 and the content of FA addition of 16.7% exhibited high aged and wet shear strengths of 1.07 and 1.47 MPa, respectively, which are superior to those for other reported soy protein-based adhesives. Meanwhile, this kind of SPWAs also displayed excellent mildew resistance, thermal stability, and flame retardancy because of the dense multiple chemical/physical cross-linking network and high P/N content. Therefore, this work provides a green and effective strategy for the development of multifunctional and high-performance fully biobased soy protein wood adhesives.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Fully Biobased Soy Protein Adhesives with Integrated High-Strength, Waterproof, Mildew-Resistant, and Flame-Retardant Properties

Liu

Guo

et al. 2022

ACS Sustainable Chem. Eng.

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“…The absorption peaks at 2924 and 2875 cm −1 belonged to symmetric and asymmetric -CH 2 , respectively [ 29 ]. The absorption peaks at 1165 and 1740 cm −1 arose from the stretching vibration of ether bond and ester bond, respectively [ 13 , 30 ], which were caused by the reaction between hydroxyl and carboxyl group in PPI and epoxy group in ECH to form ether and carboxyl ester structures, promoting the formation of cross-linked network to improve the water resistance of the PPI-based adhesive [ 31 ].…”

Section: Resultsmentioning

confidence: 99%

Effect of urea concentration on properties of peanut protein isolate, arachin and conarachin-based adhesives during urea-epichlorohydrin modification

Chen

2021

R. Soc. open sci.

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To lay a theoretical basis for the preparation of peanut protein-based adhesives and promote the sustainable development of the adhesive industry, properties of peanut protein isolate (PPI), arachin and conarachin-based adhesives modified by urea and epichlorohydrin (ECH) were investigated under different urea concentrations. When the urea concentration was 2 mol l −1 , the wet shear strength of the PPI-based adhesive was 1.24 MPa with the best water resistance. With the increase of urea concentration from 0 to 4 mol l −1 , the apparent viscosity of the PPI-based adhesive increased from 3.87 to 136.80 Pa s and the solid content increased from 18.11% to 31.11%. Compared with conarachin-based adhesive, the properties of arachin-based adhesive were improved more obviously during the combined modification. Scanning electron microscopy images illustrated that when the urea concentration was 2 mol l −1 , the surface of the PPI-based adhesive was more compact and smoother, which was beneficial to the improvement of water resistance and related to the structure changes of arachin and conarachin components. Fourier-transform infrared spectroscopy results indicated that different urea concentrations caused the change of ester and ether bonds in the PPI-based adhesive, which was mainly related to arachin component. Thermogravimetry results suggested that when the urea concentration was 2 mol l −1 , the decomposition temperature of protein skeleton in the PPI-based adhesive reached a maximum of 314°C exhibiting the highest thermal stability. The improvement of the thermal stability of conarachin was greater than that of arachin during the combined modification.

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“…The FTIR spectrum of the polymer resin is presented in Figure 3. The characteristic bands of the cationic polyamine [10,19,20] are observed. At 3311 cm −1 the broad tension vibration band of the O-H bond is observed.…”

Section: Ftir Analysis Of the Polycoat 38 ® Resinmentioning

confidence: 95%

Synthesis and Application of a Cationic Polyamine as Yankee Dryer Coating Agent for the Tissue Paper-Making Process

Valencia¹,

Valencia²,

Grande-Tovar

2020

Polymers

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Tissue paper is of high importance worldwide and, continuously, research is focused on improvements of the softening and durability properties of the paper which depend specifically on the production process. Polyamide-amine-epichlorohydrin (PAE) resins along with release agents are widely used to adhere the paper to the yankee dryer (creping cylinder) in paper manufacture. Nevertheless, these resins are highly cationic and they normally adhere in excess to the paper which negatively affects the creping process and the quality of the paper. For this reason, a low cationic polyamine-epichlorohydrin coating (Polycoat 38®) was synthesized from a diamine supplied by Disproquin S.A.S. and epichlorohydrin. The analysis of the synthesized polymer was carried out by Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (1H-NMR). The molecular weight of the polymer was obtained by gel permeation chromatography (GPC), physical-chemical properties such as kinematic viscosity, percentage of solids, density, charge density were measured and compared with a commercial PAE resin (Dispro620®) Thermal stability of the Polycoat 38® and glass transition temperature in presence of a release agent (Disprosol 17®) were also evaluated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), respectively. Finally, a peel adhesion test and an absorption durability assessment were carried out together with the evaluation of the creeping efficiency of the paper by caliber and tensile measurements in a tissue (towel paper) production plant, demonstrating a superior performance in the paper creping process as compared to some commercially available products.

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Storage stability of polyamidoamine-epichlorohydrin resin and its effect on the properties of defatted soybean flour-based adhesives

Cited by 58 publications

References 34 publications

Fully Biobased Soy Protein Adhesives with Integrated High-Strength, Waterproof, Mildew-Resistant, and Flame-Retardant Properties

Fully Biobased Soy Protein Adhesives with Integrated High-Strength, Waterproof, Mildew-Resistant, and Flame-Retardant Properties

Effect of urea concentration on properties of peanut protein isolate, arachin and conarachin-based adhesives during urea-epichlorohydrin modification

Synthesis and Application of a Cationic Polyamine as Yankee Dryer Coating Agent for the Tissue Paper-Making Process

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