Combination of cellulose and plant oil toward sustainable bottlebrush copolymer elastomers with tunable mechanical performance

Yu, Hanqing; Feng, Jiajun; Tang, Pengfei; Chen, Shuaishuai; Wang, Zhiqiang; Jiang, Feng

doi:10.1016/j.ijbiomac.2022.04.159

Cited by 15 publications

(12 citation statements)

References 50 publications

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“…Thermoplastic elastomers (TPEs) have received tremendous attention owing to their excellent tensile strength, elasticity, and reprocessability. , Consisting of the soft block as the rubbery matrix and rigid block as the glassy microdomains, the mechanical properties of TPEs, including toughness, modulus, extensibility, and elastic recovery, can be rationally manipulated by changing the compositions, network structures, and molecular architectures. − TPEs are widely used in our everyday lives, such as packaging materials, automotive parts, adhesives, sealing materials, clothing, electronic skins, and bioengineering devices. − The most commercial TPEs are ABA-type triblock copolymers, such as polystyrene- block -polyisoprene- block -polystyrene (SIS), polystyrene- block -polybutadiene- block -polystyrene (SBS), and polystyrene- block -poly(ethylene- co -butylene)- block -polystyrene (SEBS), in which the rigid A block and soft B block can self-assemble into varied microphase-separated structures according to their volume ratios. − …”

Section: Introductionmentioning

confidence: 99%

Sustainable Multiblock Copolymer Elastomers Derived from Lignin with Tunable Performance toward Strong Adhesives and UV-Shielding Materials

Tang

Wang

Wen

et al. 2023

ACS Sustainable Chem. Eng.

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With the increasing concern about global environmental issues, reducing the carbon footprint to achieve carbon neutrality has been particularly important. Sustainable multiblock copolymer elastomers (MBCPEs) have received tremendous interest due to their unprecedented performance and huge potential applications. However, complex multistep polymerization and postpolymerization processes are needed to design MBCPEs. In this work, a series of MBCPEs, in which vanillin acrylate (VA) derived from lignin was selected as the renewable rigid segments for the glassy block, while methyl acrylate (MA) was chosen as the soft segments for the rubbery block, were prepared by two successive reversible addition–fragmentation chain transfer (RAFT) polymerization processes with polytrithiocarbonate (PTTC). These thermally stable MBCPEs exhibit distinct microphase-separated morphology, where the hard poly(vanillin acrylate) (PVA) blocks self-assemble into discrete glassy domains serving as the physical cross-linking points in the soft poly(methyl acrylate) (PMA) matrix. The macroscopic mechanical performance, such as tensile strength, stretchability, toughness, and elastic recovery, can be adjusted well by changing the molecular weights and PVA contents. Moreover, these sustainable MBCPEs can be applied as strong adhesives and excellent UV-shielding materials, broadening their potential applications. This novel strategy is convenient and robust by combining RAFT polymerization and renewable resources toward high-performance MBCPEs, which can open a new avenue for the development of sustainable biobased elastomers.

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Section: Introductionmentioning

confidence: 99%

Sustainable Multiblock Copolymer Elastomers Derived from Lignin with Tunable Performance toward Strong Adhesives and UV-Shielding Materials

Tang

Wang

Wen

et al. 2023

ACS Sustainable Chem. Eng.

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“…The first step was to modify the hydroxy groups of cellulose with 2-bromoisobutyryl bromide, which was followed by the two-step sequential polymerization of BA and MMA according to our previous work . It should be noted that the degree of substitution (DS) of the macroinitiator cellulose 2-bromoisobutyrate (Cell-BiB) in this work was 1.7 (Figure S2a), indicating that the grafting density was 1.7 per glucose unit on the cellulose backbone, which was much higher than the values reported in the other works (DS values equaled to 1.0). ,, The higher DS value benefited from the three available hydroxyl groups per glucose unit in the cellulose chain, which ensured a higher side-chain graft density for the bottlebrush copolymers in this work . Various PBA/PMMA feed ratios were applied to manipulate the molecular masses of Cell- g -PBA- b -PMMA copolymers.…”

Section: Methodsmentioning

confidence: 98%

“…4,36,37 The higher DS value benefited from the three available hydroxyl groups per glucose unit in the cellulose chain, which ensured a higher side-chain graft density for the bottlebrush copolymers in this work. 3 Various PBA/ PMMA feed ratios were applied to manipulate the molecular masses of Cell-g-PBA-b-PMMA copolymers.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…Herein, φ side is the volume fraction of the side chains, ρ (1.0 g/ cm 3 ) is the density of the sample, and M side is the molecular mass of the side chains and M chain is that of the main chain.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…In recent years, bottlebrush copolymers have received tremendous attention due to their intriguing physical properties and a wide range of applications, such as supersoft elastomers, sustainable thermoplastics, templates for nanomaterials, electronic devices, and energy storage materials. − Composed of a linear backbone and high-density side chains, bottlebrush copolymers show significantly a reduced entanglement plateau modulus compared to their linear analogues . In general, the physical behavior of bottlebrush copolymers is determined by the degrees of polymerization (DPs) of the backbone and side chains, the grafting density, and the network structures.…”

Section: Introductionmentioning

confidence: 99%

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Nanostructures, Linear Rheological Responses, and Tunable Mechanical Properties of Microphase-Separated Cellulose-graft-Diblock Bottlebrush Copolymer Elastomers

et al. 2023

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A series of cellulose-graft-diblock bottlebrush copolymer elastomers (cellulose-graft-poly(n-butyl acrylate)-block-poly(methyl methacrylate) (Cell-g-PBA-b-PMMA)) with short side chains were synthesized via successive atom transfer radical polymerization (ATRP) to study the influence of varying compositions and lengths of the graft diblock side chains on microphase morphologies and properties. The microphase-separated morphologies from misaligned spheres to cylinders were observed by atomic force microscopy (AFM) and small-angle X-ray scattering (SAXS) measurements. These bottlebrush copolymer elastomers possessed thermal stability and enhanced mechanical properties because the PMMA outer block could self-assemble into hard microdomains, which served as physical cross-links. The viscoelastic responses of these bottlebrush copolymers within the linear viscoelastic (LVE) regime were carried out by the oscillatory shear rheology. The time–temperature superposition (tTs) principle was applied to construct the master curves of the dynamic moduli, and the sequential relaxation of dense bottlebrush copolymers with different PMMA hard outer block lengths was analyzed. The rheological behaviors in this work could be utilized to build up the connection of microstructures and properties for the application of these bottlebrush copolymers as high-performance thermoplastic elastomers.

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Stimuli–Responsive Mechanoadaptive Elastomeric Composite Materials: Challenges, Opportunities, and New Approaches

Dolui,

Natarajan,

et al. 2023

Adv Eng Mater

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Stimuli‐responsive mechano‐adaptive materials, capable of reversibly changing their mechanical properties when exposed to an external stimulus, are the next generation of smart materials with immense transformative potential for various technological applications. Although the concept of adaptive mechanical properties has been proven for some materials, it remains very challenging for soft elastomeric materials. The aim of this review is to provide new ideas and strategies for the development of mechano‐adaptive elastomeric composites using commercial rubber as the matrix polymer. The fundamental question addressed here is: How do the phase‐responsive functional fillers alter the mechanical properties? For a given physical network environment, what is the mechanism that gives rise to the stimuli‐responsive properties of the resulting composites?? This paper summarizes the preparation, structure and properties of recently developed mechano‐adaptive elastomeric materials. Furthermore, based on their structure‐property relationships, plausible applications of these smart materials in various technology‐specific applications such as soft robotics, actuators, sensors, smart tires, automotive design, aerospace etc. are demonstrated with representative examples. Finally, the paper critically discusses the existing challenges in the field of mechano‐adaptive elastomers in order to provide valuable insights in this area.This article is protected by copyright. All rights reserved.

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Combination of cellulose and plant oil toward sustainable bottlebrush copolymer elastomers with tunable mechanical performance

Cited by 15 publications

References 50 publications

Sustainable Multiblock Copolymer Elastomers Derived from Lignin with Tunable Performance toward Strong Adhesives and UV-Shielding Materials

Sustainable Multiblock Copolymer Elastomers Derived from Lignin with Tunable Performance toward Strong Adhesives and UV-Shielding Materials

Nanostructures, Linear Rheological Responses, and Tunable Mechanical Properties of Microphase-Separated Cellulose-graft-Diblock Bottlebrush Copolymer Elastomers

Stimuli–Responsive Mechanoadaptive Elastomeric Composite Materials: Challenges, Opportunities, and New Approaches

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