Cellulose Nanofiber Composite Polymeric Materials with Reversible and Movable Cross-links and Evaluation of their Mechanical Properties

Tsuchiya, Hinako; Asaki, Yuki; Sinawang, Garry; Asoh, Taka‐Aki; Osaki, Motofumi; Park, Junsu; Ikemoto, Yuka; Yamaguchi, Hiroyasu; Harada, Akira; Uyama, Hiroshi; Takashima, Yoshinori

doi:10.1021/acsapm.1c01332

Cited by 14 publications

(12 citation statements)

References 50 publications

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“…This can solve the problems encountered in the use of the existing polymers. Adamantane (Ad) and β-CD cyclodextrin (β-CD) molecules are widely used in supramolecular oil flooding due to their unique properties. , Pu et al created a new type of supramolecular copolymer for enhanced oil recovery. They utilized Ad and β-CD in an aqueous solution to achieve self-assembly through host–guest interactions .…”

Section: Introductionmentioning

confidence: 99%

Molecular Insights into Cyclodextrin–Adamantane-Modified Copolymer Host–Guest Interactions

2023

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Supramolecular polymer flooding has great potential in solving the problems of difficult injection and low recovery in low-permeability polymer reservoirs. However, the self-assembly mechanism of supramolecular polymers is not yet to be fully understood at the molecular level. In this work, molecular dynamics simulations were used to explore the formation of cyclodextrin and adamantane-modified supramolecular polymer hydrogels; the self-assembly mechanism was summarized; and the effect of concentration on the oil displacement index was evaluated. The assembly mechanism of supramolecular polymers can be attributed to the "node−rebar−cement" mode of action. At the same time, Na + can form intermolecular and intramolecular salt bridges with supramolecular polymers, and together with the "node−rebar−cement" mode of action, the supramolecular polymers can form a more compact 3D network structure. When the polymer concentration was increased, especially up to its critical association concentration (CAC), the association increased significantly. Besides, the construction of a 3D network was promoted, which results in a higher viscosity. This work investigated the assembly process of supramolecular polymers from the molecular scale and explained its mechanism of action, which makes up for the deficiencies of other research methods and provides a theoretical basis for screening out functional units that can be used for the supramolecular polymer assembly.

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Section: Introductionmentioning

confidence: 99%

Molecular Insights into Cyclodextrin–Adamantane-Modified Copolymer Host–Guest Interactions

2023

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“…Using the correlation diagram, the differences in the mechanical properties of the elastomers can be compared more clearly. G f / E generally decreases with increasing E . ,,, On the other hand, the plots of DCP(80) deviated from the linear region shown by the other elastomers, indicating that the DCP elastomers had different mechanical properties.…”

Section: Resultsmentioning

confidence: 91%

“…The addition of additives to polymeric materials is another way to enhance G f or E . It has already been reported that the mechanical properties of glassy polymers can be improved by compositing homogeneous and heterogeneous microparticles. − Our group achieved improved G f values by using several mixing methods for adding additives. − …”

Section: Introductionmentioning

confidence: 84%

Hybridizing a Dual-Cross Network and a Linear Glassy Polymer for Dynamic Contributions to High Mechanical Toughness Based on Phase-Separated Structures

et al. 2023

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Bulk copolymerization of alkyl acrylate and cyclodextrin (CD) host monomers forms a single movable cross network (SC), in which the CD units act as movable cross-linkers. Moreover, the bulk copolymerization of the CD monomer and main chain monomer in the presence of SC results in dual-cross-network (DC) elastomers. DC elastomers result in good toughness (G f). Here, to improve G f and Young’s modulus (E), we hybridized DC elastomers with tertiary glassy polymers, which are called DCP elastomers. We prepared the DCP elastomers by photopolymerization of N,N-dimethylacrylamide (DMAA) and poly(2-methoxyethyl acrylate) (MEA) in the presence of DC. A DCP elastomer with a suitable weight percent (wt %) of the glassy polymer shows high G f (108.4 MJ m–3) and E (223.4 MPa) values. Dynamic mechanical analysis (DMA) and in situ small-angle X-ray scattering (SAXS) measurements under uniaxial stretching indicate multiple deformations based on phase-separated structures. We suggest that the phase-separated structures of DCP elastomers cause a large stress dissipation, which contributes to high toughness.

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“…Holographic techniques have been proposed to generate complex acoustic fields using only a single ultrasonic source as well as to manipulate multiple objects in an independent way along any spatial direction with speeds approaching 10 m/s [ 6 ]. Composite polymer materials, already used in a wide variety of applications such as [ 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ], play a fundamental role in materials science. Among them, photomobile polymers (PMP), which are materials able to convert light energy into mechanical work, represent the ideal platform for the development of a large variety of touchless devices [ 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

Light-Controlled Rotational Speed of an Acoustically Levitating Photomobile Polymer Film

Lucchetta

Castellini²,

Martarelli³

et al. 2023

Materials

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In this work, we study the light-induced changes of the rotational speed of a thin photomobile film using a single-axis acoustic levitator operating at 40 kHz. In our experiments, a 50 μm thick photomobile polymer film (PMP) is placed in one of the nodes of a stationary acoustic field. Under the action of the field, the film remains suspended in air. By externally perturbing this stable equilibrium condition, the film begins to rotate with its natural frequency. The rotations are detected in real time by monitoring the light of a low power He–Ne laser impinging on and reflected by the film itself. During the rotational motion, an external laser source is used to illuminate the PMP film; as a consequence, the film bends and the rotational speed changes by about 20 Hz. This kind of contactless long-distance interaction is an ideal platform for the development and study of many electro-optics devices in microgravity and low-friction conditions. In particular, we believe that this technology could find applications in research fields such as 3D dynamic displays and aerospace applications.

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Cellulose Nanofiber Composite Polymeric Materials with Reversible and Movable Cross-links and Evaluation of their Mechanical Properties

Cited by 14 publications

References 50 publications

Molecular Insights into Cyclodextrin–Adamantane-Modified Copolymer Host–Guest Interactions

Molecular Insights into Cyclodextrin–Adamantane-Modified Copolymer Host–Guest Interactions

Hybridizing a Dual-Cross Network and a Linear Glassy Polymer for Dynamic Contributions to High Mechanical Toughness Based on Phase-Separated Structures

Light-Controlled Rotational Speed of an Acoustically Levitating Photomobile Polymer Film

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