Supramolecular Polymer Nanocomposites Derived from Plant Oils and Cellulose Nanocrystals

Song, Lingzhi; Wang, Zhongkai; Lamm, Meghan E.; Yuan, Liang; Tang, Chuanbing

doi:10.1021/acs.macromol.7b01691

Cited by 56 publications

(29 citation statements)

References 52 publications

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“…As shown in Fig. 1a , an α, ω-diene amide monomer with hydroxyl side group ( N,N ' -(2-hydroxypropane-1,3-diyl)bis(undec-10-enamide), UDA) was first prepared via amidation of methyl 10-undecenoate with 1,3-diamino-2-propanol 34 – 36 . The reaction conversion into UDA monomer during this step is quantitative (~100%).…”

Section: Resultsmentioning

confidence: 99%

Ultra-strong long-chain polyamide elastomers with programmable supramolecular interactions and oriented crystalline microstructures

et al. 2019

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Polyamides are one of the most important polymers. Long-chain aliphatic polyamides could bridge the gap between traditional polyamides and polyethylenes. Here we report an approach to preparing sustainable ultra-strong elastomers from biomass-derived long-chain polyamides by thiol-ene addition copolymerization with diamide diene monomers. The pendant polar hydroxyl and non-polar butyrate groups between amides allow controlled programming of supramolecular hydrogen bonding and facile tuning of crystallization of polymer chains. The presence of thioether groups on the main chain can further induce metal–ligand coordination (cuprous-thioether). Unidirectional step-cycle tensile deformation has been applied to these polyamides and significantly enhances tensile strength to over 210 MPa while maintaining elasticity. Uniaxial deformation leads to a rearrangement and alignment of crystalline microstructures, which is responsible for the mechanical enhancement. These chromophore-free polyamides are observed with strong luminescence ascribed to the effect of aggregation-induced emission (AIE), originating from the formation of amide clusters with restricted molecular motions.

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Section: Resultsmentioning

confidence: 99%

Ultra-strong long-chain polyamide elastomers with programmable supramolecular interactions and oriented crystalline microstructures

et al. 2019

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“…Song et al demonstrated the fabrication of a supramolecular polymer/CNC nanocomposite based on hydroxyl- and carboxyl-functionalized soybean oil-derived polymers [ 151 ]. The nanocomposite was prepared by solution casting from DMF.…”

Section: Polymer Nanocomposites Reinforced By Cncmentioning

confidence: 99%

Recent Advances in Nanocellulose Composites with Polymers: A Guide for Choosing Partners and How to Incorporate Them

2018

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Abstract:In recent years, the research on nanocellulose composites with polymers has made significant contributions to the development of functional and sustainable materials. This review outlines the chemistry of the interaction between the nanocellulose and the polymer matrix, along with the extent of the reinforcement in their nanocomposites. In order to fabricate well-defined nanocomposites, the type of nanomaterial and the selection of the polymer matrix are always crucial from the viewpoint of polymer-filler compatibility for the desired reinforcement and specific application. In this review, recent articles on polymer/nanocellulose composites were taken into account to provide a clear understanding on how to use the surface functionalities of nanocellulose and to choose the polymer matrix in order to produce the nanocomposite. Here, we considered cellulose nanocrystal (CNC) and cellulose nanofiber (CNF) as the nanocellulosic materials. A brief discussion on their synthesis and properties was also incorporated. This review, overall, is a guide to help in designing polymer/nanocellulose composites through the utilization of nanocellulose properties and the selection of functional polymers, paving the way to specific polymer-filler interaction.

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“…For example, the modulus of the nanocomposites containing 15% ChNF at 170 °C was 125 times higher when compared to the neat CP. All the nanocomposites also exhibited a rubbery plateau, which became more evident with higher ChNF addition, indicating the formation of a rigid network and the significant reinforcing effect of ChNF in the matrix. , Moreover, in contrast to a significant drop in storage modulus of the neat CP at 170 °C, the modulus of the ChNF reinforced CP nanocomposites still maintained a high value up to around 225 °C at the 15% ChNF loading.…”

Section: Resultsmentioning

confidence: 97%

Acidic Ethanol/Water Casting Approach to Improve Chitin Nanofibril Dispersion and Properties of Propionylated Chitin Biocomposites

Zhong

Wolcott

Liu

et al. 2021

ACS Sustainable Chem. Eng.

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A fabrication process using acidic ethanol/water as a medium was developed to achieve homogenous dispersion of chitin nanofibrils (ChNFs) in a chitin propionate (CP) solution to form ChNF-reinforced CP nanocomposites. CP was prepared by propionylation of chitin to improve its dissolution in green organic solvents. ChNFs were extracted from chitin via partial alkali deacetylation in water. An acidified ethanol/water mixture as a medium was found to dissolve CP and disperse ChNF suspensions simultaneously, forming clear and stable formulations. The degree of ChNF dispersion and compatibility between ChNF and CP in the acidified ethanol/water mixture yielded transparent ChNF-reinforced CP nanocomposites with a moderate UV-blocking capability of up to 76%. The tensile strength and modulus of 15% ChNF-filled nanocomposites were enhanced by 66 and 97%, respectively, when compared to the neat films. In addition, the maximum degradation temperature was increased by 40 °C. The increase in storage modulus was more pronounced above the glass transition temperature. These results demonstrated that ChNFs had substantial reinforcing effects on the cast CP nanocomposites.

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Supramolecular Polymer Nanocomposites Derived from Plant Oils and Cellulose Nanocrystals

Cited by 56 publications

References 52 publications

Ultra-strong long-chain polyamide elastomers with programmable supramolecular interactions and oriented crystalline microstructures

Ultra-strong long-chain polyamide elastomers with programmable supramolecular interactions and oriented crystalline microstructures

Recent Advances in Nanocellulose Composites with Polymers: A Guide for Choosing Partners and How to Incorporate Them

Acidic Ethanol/Water Casting Approach to Improve Chitin Nanofibril Dispersion and Properties of Propionylated Chitin Biocomposites

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