Synthesis of polyurethane acrylate and application to UV-curable pressure-sensitive adhesive

Ren, Yongmao; Hui-ming, Pan; Li, Longsi; Jianming, Xia; Yang, Yong

doi:10.1163/1568555054460060

Cited by 7 publications

(5 citation statements)

References 2 publications

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“…The CO group peak at 1725 cm –1 is caused by 2-EHA, acrylic acid (AA), and esters in the carbamate group. There is no peak at 1620–1700 cm –1 , indicating that there is no stretching vibration of the carbon–carbon double bond in the system, meaning that all monomers in the system have reacted . Comparing the two curves, the spectrum of the modified acrylic adhesive shows a stretching vibration absorption peak of NH at 3408 cm –1 , a bending vibration absorption peak of NH at 1593 cm –1 , and a stretching vibration absorption peak of CN at 1420 cm –1 , all of which prove the presence of carbamate groups in the modified acrylic adhesive.…”

Section: Resultsmentioning

confidence: 96%

Role of the Soft and Hard Segments Structure in Modifying the Performance of Acrylic Adhesives Modified by Polyurethane Macromonomers

Zhu,

Shi,

Shi

et al. 2024

ACS Omega

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Acrylic pressure sensitive adhesives, modified by polyurethane (PU), achieve selective optimization through the designability of polyurethanes. In this paper, PU macromonomers were prepared by a two-step synthesis method, using polypropylene glycol or polyethylene glycol with different molecular weights as soft segments and different types of diisocyanates: isophorone diisocyanate, hexamethylene diisocyanate, dicyclohexylmethylmethane diisocyanate (HMDI), 2,4-toluene diisocyanate (TDI), and 4,4′-diphenylmethane diisocyanate (MDI) and chain extenders as hard segments. After being terminated by capping agents, a series of PU macromonomers of different molecular weights and structures were obtained and used to modify the acrylic base adhesives. Compared to unmodified adhesives, acrylic adhesives modified by PU macromonomers have improved adhesion performances and heat resistance and show an increasing trend with the increase of molecular weight of diols. Diols with a molecular weight of 600 have the best effect. Diisocyanates containing benzene rings can better improve the thermal performance of adhesives, where P MDI containing a biphenyl ring is the best, while aliphatic isocyanate groups have a greater improvement in adhesion performance, and the adhesion performance of P HDI with a long carbon chain is the best.

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Section: Resultsmentioning

confidence: 96%

Role of the Soft and Hard Segments Structure in Modifying the Performance of Acrylic Adhesives Modified by Polyurethane Macromonomers

Zhu,

Shi,

Shi

et al. 2024

ACS Omega

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“…The PSA had a certain adhesion to high and low surface energy adhesives and a high holding power and shear force failure temperature. [12] Wu [13] et al prepared a series of bio-based copolymers by epoxidized camellia oil monomer (ECO) and copolymerizing adenine/thymine-containing monomers (AAc/ TAc), which had high peel strength and shear strength, and the long fatty acid chain of the vegetable oil also gave the PSA good hydrophobicity to achieve effective bonding under water. Zhao's team described a new strategy to fabricate a sustainable adhesive by taking advantage of the synergistic effect of phosphorylated epoxidized soybean oil and kenaf fiber coated by the poly (tannic acid) in soybean flour matrix.…”

Section: Introductionmentioning

confidence: 99%

“…Hydrogenated castor oil (HCO) was used to synthesize polyurethane (PU) with polyester diol and isophorone diisocyanate (IPDI). The PSA had a certain adhesion to high and low surface energy adhesives and a high holding power and shear force failure temperature [12] . Wu [13] et al.…”

Section: Introductionmentioning

confidence: 99%

A Humidity‐Insensitive Waterborne Polyurethane Pressure‐Sensitive Adhesive Modified by Castor Oil and Siloxane

Ren

Zhang

et al. 2023

ChemistrySelect

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Although waterborne polyurethane pressure-sensitive (PSA) has achieved great progress, achieving robust effective adhesion on the wet substrate surface is still challenging. Herein, we developed a humidity-insensitive waterborne polyurethane pressure-sensitive adhesive through the modification of biobased castor oil and 3-aminopropyl triethoxysilane (APTES) as the end-capper. Improved bonding property on wet substrate via drainage of hydrophobic groups led to better humidityinsensitive adhesiveness. The results exhibited exceptional bonding performance (∼ 3.3N/25 mm) on the moist surface of the steel in the environment with a humidity of 100 % RH (Relative Humidity). Especially, the 180°peel forces of siloxane-terminated castor oil-based waterborne polyurethane (SCWPU) respectively enhanced by 13.33 % and 73.68 % compared with the blank sample when the air humidity increased from 50 % RH to 100 % RH. Silicone had the advantages of low surface energy, good heat resistance and good oxidation resistance. The heat resistance could be improved by introducing silicone into waterborne polyurethane. Tested by the TGA, the SCWPU3 PSA demonstrated great thermal stability (T HRI = 144.32 °C). Besides, the PSA also exhibited low water absorption (20.6 %), and eligible viscoelasticity properties. These findings provided an impetus for the development of humidity-insensitive PSA.

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“…The significance of these adhesives has, therefore, increased for many applications. These adhesives are also often used in preference to contact or heat-sealing adhesives [27][28][29][30] . Acrylate copolymers have gained a considerable significance over other various polymeric raw materials because of their excellent properties, such as ageing resistance and light stability, good adhesion to various types of substrates, and ease of application.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Study of Antibacterial Activity of Methacrylic Copolymer

Mageswari

Subramanian

2012

Polymer-Plastics Technology and Engineering

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4-Benzyloxyphenylmethacrylic copolymers with Glycidyl methacrylate were synthesized from the monomer, 4-Benzyloxyphenylmethacrylate (4-BOPMA) by free radical solution polymerization. The synthesized monomer and co-polymer were characterized by UV, FT-IR, H 1 -NMR and C 13 -NMR spectroscopic techniques. The thermal stability of the polymers was determined by TGA in inert atmosphere. The glass transition temperatures of the polymers were determined by DSC analysis. The antibacterial activities of the polymers were also studied by UV spectroscopy at various concentration. The results of the TGA analysis showed that the polymers had good stability upto 250 C. Compared to homopolymer, the copolymer shows a broad spectrum of antibacterial properties.

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Synthesis of polyurethane acrylate and application to UV-curable pressure-sensitive adhesive

Cited by 7 publications

References 2 publications

Role of the Soft and Hard Segments Structure in Modifying the Performance of Acrylic Adhesives Modified by Polyurethane Macromonomers

Role of the Soft and Hard Segments Structure in Modifying the Performance of Acrylic Adhesives Modified by Polyurethane Macromonomers

A Humidity‐Insensitive Waterborne Polyurethane Pressure‐Sensitive Adhesive Modified by Castor Oil and Siloxane

Synthesis, Characterization and Study of Antibacterial Activity of Methacrylic Copolymer

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