Synthesis of waterborne polyurethane ink binder with high T‐peel strength and its application in biaxially oriented polypropylene film printing

Zhang, Mingguang; Lian, Xiuye; Cui, Jialiang; Li, Xiaoyü; Wang, Haiqiao

doi:10.1002/app.50273

Cited by 6 publications

(3 citation statements)

References 33 publications

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“…On the basis of this unique structure, waterborne polyurethane can be tailored into different structure by changing the reaction feeds, such as polydiol, hydrophilic chain extender, isocynate, even include neutralizer. By structure design, polyurethane dispersion is regarded as one of the most important green polymers in many applications such as coatings [32,33] , biological fluids [34,35], adhensive [36][37][38], and water-separation [39] because of its good mechanical properties, adhesive properties, film-forming performance and low costs [40,41]. It is now one of the most rapid developing and active branches of polyurethane chemistry [42].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and rheological performance of shear-thickening waterborne polyurethane

Wang,

Zhang,

et al. 2024

Mater. Res. Express

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Shear-thickening fluids (STFs) are a new type of intelligent material with excellent performance whose viscosity increase sharply with the increase of shear rate or shear stress. However, the synthesis yield of dispersed phase particles is low, and the particle re-dispersion process is challenging for the industrial production of STFs. In this work, through structural design, a waterborne polyurethane (WPU) with typical shear-thickening properties was synthesized for the first time. This synthesis process is conducive to industrial production. The rheological properties of the synthesized WPU at different concentrations, temperatures, and pH were studied using a rheometer. The results showed that the WPU exhibited typical shear-thickening behavior. However, due to the special core-shell structure of the WPU particles, the shear rate has two transition responses to the shear-thickening behavior. With increasing concentration, the shear-thickening performance of the WPU is enhanced, and the critical shear rate is decreased. For the coexistence of Brownian motion and solvation, the rheological curve of the WPU exhibits a complex response to temperature increase; its shear-thickening behavior decreases with rising temperature, but the viscosity first decreases and then increases with temperature. Due to the presence of carboxyl groups on the surface of the WPU particles, its shear-thickening performance shows a strong response to pH. By appropriately adjusting the pH, the viscosity and particle size of the WPU can be increased through the ionization of carboxyl groups, thereby enhancing the shear-thickening behavior.

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Section: Introductionmentioning

confidence: 99%

Synthesis and rheological performance of shear-thickening waterborne polyurethane

Wang,

Zhang,

et al. 2024

Mater. Res. Express

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“…Common binders, also called "resins," include acrylics, polyurethanes, polyvinylbutyral, and nitrocellulose [33]. Besides adhesion, the type of binder affects viscosity, scratch resistance, flexibility, and gloss [26,27], whilst additives vary according to the targeted application [28]. Plasticizer is a common additive in ink formulation, aiming at softening binders and improving flexibility [29].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Recycling of Printed Flexible Plastic Packaging: The Role of Binders and Pigments

Lisiecki,

Belé

et al. 2024

Preprint

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“…Consequently, the development of highperformance polyacrylate latex binders is highly necessary for the improvement of ink quality. 8 It has been proved that designing latex particles with core-shell composite structure and introducing some crosslinkable groups into latexes are the most effective strategy for improving high-performance polyacrylate latexes. [9][10][11] Thus, there is a huge body of literature on the synthesis and properties of self-crosslinkable polyacrylate latexes with core-shell composite structure.…”

Section: Introductionmentioning

confidence: 99%

Study on ethanol resistance stability and adhesion properties of polyacrylate latex for PE or BOPP film inks

Chen

et al. 2021

J of Applied Polymer Sci

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Waterborne inks based on the polyacrylate latex typically suffer from poor ethanol resistance and low adhesion on the PE or BOPP films. In this contribution, self-crosslinkable polyacrylate latex binders with core-shell structure and diacetone acrylamide (DAAM)/adipic acid dihydrazide (ADH) crosslinking agent for the application in the PE (polyethylene) or BOPP (Biaxially oriented polypropylene) film inks were synthesized. The effect of DAAM distribution in latex particles on ethanol resistance stability and the adhesion on the PE and BOPP thin films of the latexes and the corresponding inks was studied. Also, two functional monomers, isobornyl acrylate (IBOA) and acrylamide (AM) were introduced into the polyacrylate, respectively, to investigate their effect on the adhesion of the latexes and the inks on the PE and BOPP films. The results demonstrated that the more DAAM distributed in the core layer of the latex particles, the better the ethanol resistance, but the weaker the initial adhesion on the BOPP and PE thin films and the lower crosslinking degree of the latexes and the relative inks. However, the difference in cross-linking degree and adhesion between the latex film with DAAM located within the shell part and that of DAAM located in the shell part keeps reducing with the prolongation of film-forming time. Thus, when half of the DAAM is in the shell layer of latex particles, the latexes and the corresponding inks possess a balanced comprehensive property. The introduction of IBOA into polyacrylate is beneficial for improving the adhesion on both the BOPP and PE films of the inks due to the reduced surface tension of the latex. However, AM is only effective on the PE film, which may be due to the structural similarity of AM to erucate amide and oleate amide contained in the PE film, improving interaction between ink and the PE film.

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Synthesis of waterborne polyurethane ink binder with high T‐peel strength and its application in biaxially oriented polypropylene film printing

Cited by 6 publications

References 33 publications

Synthesis and rheological performance of shear-thickening waterborne polyurethane

Synthesis and rheological performance of shear-thickening waterborne polyurethane

Mechanical Recycling of Printed Flexible Plastic Packaging: The Role of Binders and Pigments

Study on ethanol resistance stability and adhesion properties of polyacrylate latex for PE or BOPP film inks

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