Hydrogels with high mechanical strength cross-linked by a rosin-based crosslinking agent

Zhang, Haibo; Huang, Xin; Jiang, Jianxin; Shang, Shibin; Song, Zhanqian

doi:10.1039/c7ra08024g

Cited by 33 publications

(25 citation statements)

References 39 publications

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“…Figure 3 is 1 H NMR spectra of the rosin‐based chain extender. As can be seen from Figure 3, the peak at 4.3 ppm is attributed to the methylene proton peak adjacent to the ester group (─COOCH 2 ─), which is very close to the theoretical value 32 …”

Section: Resultssupporting

confidence: 77%

“…Rosin, as a rich and inexpensive natural product, mainly comprises rosin acids in typical characteristic hydrophenanthrene structures. The rosin acids have cycloaliphatic and aromatic structures, resulting in superior thermal and mechanical properties in rosin‐based components 32 . However, the rosin‐based chain extender for polyurethane to improve the comprehensive properties is scarcely studied.…”

Section: Introductionmentioning

confidence: 99%

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Study on novel rosin‐based polyurethane reactive hot melt adhesive

Xie

2021

Polymers for Advanced Techs

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Chain extender is a major additive in polyurethane adhesive preparation, which has a great influence on its molecular weight, green strength, and thermal resistance. In this work, we first synthesized a novel rosin‐based chain extender to replace conventional petroleum derived ones due to rosin was a renewable and low cost natural material. Afterward, the as‐prepared rosin‐based chain extender reacted with the isocyanate‐terminated polyurethane prepolymer to prepare polyurethane reactive hot melt adhesive (PURHMA). Rosin contains rigid hydrophenanthrene ring, which may have good effect on the thermal and mechanical properties of PURHMA. Consequently, the characterization of the thermal and physical properties of sustainable PURHMA was made using differential scanning calorimetry, X‐ray diffraction, dynamic mechanical thermal analyzer, as well as thermogravimetric analysis. Eventually, the adhesion performance of PURHMA on wood substrates were investigated by adjusting the amount of rosin‐based chain extender in the adhesive system. It was found that with the increase of the chain extender content, the thermal resistance, mechanical property, and adhesion property of PURHMA were significantly improved. The tensile strength of adhesive joints increased from 4.15 to 15.53 MPa, and the ultimate lap shear strength increased from 5.76 to 8.92 MPa. More strikingly, the rosin‐based PURHMA exhibited excellent bonding strength even after aging in water (less than 18%).

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Section: Resultssupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Study on novel rosin‐based polyurethane reactive hot melt adhesive

Xie

2021

Polymers for Advanced Techs

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“…Effects associated with excess crosslinking produce a decrease in the elongation capacity of the polymeric chains, greater rigidity of the material and of the cavities that stock the absorbable liquid, producing in the hydrogel reduced or irregular liquid retention and swelling capacities. The said phenomenon of changes in the swelling capacity related to the increase in crosslinking agent was already reported in previous studies that described similar behaviors [17,[21][22][23].…”

Section: Statistical Studysupporting

confidence: 71%

Synthesis and characterization of Hydrogels based on Potato Starch/Poly(vinyl Alcohol)/N, N'-Methylenebisacrylamide

Pinzon-Moreno

Vicuña-Galindo

Gonzáles-Fernández

et al. 2021

Preprint

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Several hydrogels were synthesized by free-radical polymerization in an aqueous medium based on potato starch (PS), poly(vinyl alcohol) (PVA), and N,N'-Methylenebisacrylamide (MBAm), being possible to study these hydrogels as a function of the proportion of components incorporated. In this way, the products generated from the synthesis were characterized by swelling and deswelling kinetics, the first swelling being verified with Schott and statistical models, allowing to contrast the proximity between the experimental and theoretical behavior. Additionally, spectroscopy (FTIR), morphological (SEM), and thermal (TGA and DSC) analysis allowing to know the intrinsic characteristics of the material, increasing in general terms the knowledge of this type of material. In this context, it was possible to verify the characteristics and effectiveness of the synthesis and crosslinking of the main components. The experimental results obtained show that the synthesized hydrogels present representative first swellings consistent with kinetic and statistical models; however, there are significant changes in the second swelling derived from polymer degradation that occurs during the same swelling/deswelling cycles processes.

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“…[25][26][27] Rosin acid is renewable, biodegradable, and biocompatible, and it has a large hydrogenated phenanthrene ring structure, thus it could be used to synthesize and modify polymer materials. 34 However, rosin containing conjugated double bonds can easily react with oxygen, which decreases the material quality, so methods including hydrogenation, disproportionation, and polymerization are needed to modify rosin to improve its stability. 35 Rosin derivatives may serve as alternatives to petroleum-based aromatic compounds or cycloaliphatic compounds that are generally used to modify polymers and improve their thermal and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

“…The development of biobased polymers is promoted by growing concerns of long‐term sustainability and the negative environmental footprint of petroleum‐based polymer materials . Rosin acid is renewable, biodegradable, and biocompatible, and it has a large hydrogenated phenanthrene ring structure, thus it could be used to synthesize and modify polymer materials . However, rosin containing conjugated double bonds can easily react with oxygen, which decreases the material quality, so methods including hydrogenation, disproportionation, and polymerization are needed to modify rosin to improve its stability .…”

Section: Introductionmentioning

confidence: 99%

Preparation of planar and hydrophobic benzocyclobutene‐based dielectric material from biorenewable rosin

Wang

Shen

et al. 2019

J of Applied Polymer Sci

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A rosin‐based monomer with thermally crosslinkable benzocyclobutene groups was synthesized in this study. The structure of the monomer was examined using mass spectroscopy, Fourier transform infrared spectroscopy, and nuclear magnetic resonance spectroscopy. An amorphous crosslinked network with dielectric constant of 2.71 and dielectric loss of 0.0012 at 30 MHz was formed when the monomer was polymerized at high temperature (> 200 °C). The polymer film exhibits surface roughness (Ra) of 0.337 nm in a 5.0 × 5.0 μm2 area and the water contact angle of 110°. In addition, results from thermogravimetric analysis indicate that the polymer has T5% = 402 °C, and differential scanning calorimetry measurements show that the glass transition temperature is at least 350 °C. Results from nanoindentation tests show that the hardness and Young's modulus of the polymer are 0.418 and 4.728 GPa, respectively. These data suggest that this new polymer may have potential applications in electronics and microelectronics. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48831.

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Hydrogels with high mechanical strength cross-linked by a rosin-based crosslinking agent

Abstract: A novel type of DN hydrogel, prepared by micellar copolymerization of acrylamide and rosin-based crosslinking agent in a micellar solution of SDS. The hydrogels could form both chemical crosslinks and hydrophobic association crosslinked centers.

Cited by 33 publications

References 39 publications

Study on novel rosin‐based polyurethane reactive hot melt adhesive

Study on novel rosin‐based polyurethane reactive hot melt adhesive

Synthesis and characterization of Hydrogels based on Potato Starch/Poly(vinyl Alcohol)/N, N'-Methylenebisacrylamide

Preparation of planar and hydrophobic benzocyclobutene‐based dielectric material from biorenewable rosin

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