The role of ionic-liquid extracted lignin micro/nanoparticles for functionalisation of an epoxy-based composite matrix

Nisha, Shammi Sultana; Nikzad, Mostafa; Kobaisi, Mohammad Al; Truong, Vi Khanh; Sbarski, Igor

doi:10.1016/j.compscitech.2019.02.009

Cited by 27 publications

(9 citation statements)

References 39 publications

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“…We can also notice that both K and L produce decreasing T s values compared to the neat resin ( T s = 192 °C). The thermal stabilities of the systems obtained in this work are comparable to those of commercial epoxy materials (DGEBA = 145 °C) or reported in the literature (135–198 °C). − …”

Section: Resultsmentioning

confidence: 99%

Design of Sustainable Materials by Cross-linking a Biobased Epoxide with Keratin and Lignin

Dinu¹,

Cantarutti²,

Mija³

2020

ACS Sustainable Chem. Eng.

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Awareness of the environmental impact of using polymeric materials obtained from petroleum is causing increased interest in sustainable materials manufacturing. Here, we present the elaboration of fully biobased materials using an aromatic epoxy resin matrix coming from wood biomass and two natural by-products, namely, keratin from chicken feathers and lignin. In situ FTIR kinetic studies show that the two natural fillers increase the conversion of the epoxide during cross-linking. This result, together with DSC studies, proves the chemical interactions between the keratin or lignin and the epoxide network. Up to 30% of these natural components could be reacted and incorporated into the epoxide with good compatibility. The thermomechanical properties of the elaborated materials are comparable to those of commercial ones.

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Section: Resultsmentioning

confidence: 99%

Design of Sustainable Materials by Cross-linking a Biobased Epoxide with Keratin and Lignin

Dinu¹,

Cantarutti²,

Mija³

2020

ACS Sustainable Chem. Eng.

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“…In this regard, Nisha et al [ 108 ] used triethylammonium hydrogen sulphate , a cheaper non‐imidazolium IL, to dissolve lignin. The IL‐lignin blend (1–2 wt%) was transferred to a cyclohexyl carboxylate epoxy resin, which was cured with an anhydride‐based hardener.…”

Section: Type Of Reinforcementsmentioning

confidence: 99%

Ionic liquid‐functionalized reinforcements in epoxy‐based composites: A systematic review

et al. 2022

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Several high‐performance reinforcements may be used in epoxy‐based composites. These commonly undergo chemical and/or physical treatments to enhance their interfacial interactions with polymer matrices. One recent technology comprises the use of ionic liquids (IL) as compatibilizers. This strategy may result in the development of composite materials with greater performance or multifunctional characteristics. Herein, an overview in the area of IL‐modified reinforcements and their effect on epoxy‐based composites is presented. The PRISMA protocol was followed for the review, and the focus of these studies was on the modification of carbon nanotubes, followed by graphene/graphite nanoplatelets and bio‐fillers. The most used IL were those based on imidazolium cation, especially 1‐butyl‐3‐methylimidazolium chloride. In most cases, when IL are used, the reinforcement displays stronger interactions with the epoxy matrix, depending the treatment route employed. Improved interfacial interactions are cited as the main reason for the improvement in the composite mechanical and thermal performances. It was also found that strategies for using low IL content, or routes that enable recovery of the salts after fiber/particle treatment, are still required, as well as the study of the influence of different amounts/types of IL on the structure of fillers and their relationships with the composite properties.

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“…This biomaterial is a three-dimensional macromolecular polymer constructed from three different phenylpropane monomer units; p-coumaryl alcohol, coniferyl alcohol, and syringyl alcohol [26]. It has gained increasing P. Prathumrat et al -Express Polymer Letters Vol.17, No.1 (2023) [104][105][106][107][108][109][110][111][112][113][114][115][116][117] attention in many research areas due to its remarkable properties, including low cost, renewability, biodegradability, high thermal stability, anti-oxidation, and high UV absorption properties [27][28][29]. These properties also promote lignin as a significant natural resource fulfilling the global demand for other environmentally benign polymeric materials.…”

Section: Introductionmentioning

confidence: 99%

Lignin-liquid crystalline elastomeric composites for shape memory applications and their thermomechanical properties

Prathumrat¹,

Nikzad²,

Hajizadeh³

et al. 2023

Express Polym. Lett.

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Liquid crystalline elastomers (LCEs) are stimuli-responsive materials with potential use in shape memory applications. Though particularly suited for shape memory, the LCEs however have some drawbacks such as low shape fixity (R f ) and slow recovery time. To overcome these limitations, new lignin-filled elastomeric liquid crystalline (ELC) composite materials were fabricated. The lignin used is a by-product of Kraft pulping process, which was obtained from renewable resources abundant in nature. Here, we show that the aromatic structure of lignin increases the netpoints density at the microscopic level in the ELC composite systems. Shape memory effects are enhanced by incorporating up to only 7 wt% of lignin, resulting in an R f of 97% for the composites. Concurrently, these composites were able to maintain their shape recovery (R r ) of nearly 100%. The recovery time of the composites reduces with increasing lignin content due to the higher elastic energy released from the netpoints based on the lignin structure. The ELC composites with 7 wt% lignin could fully recover within 70 s, while the neat LCE counterpart took 100 s. Morphological features of dispersed lignin shows that even without surface modification and only a moderate quality of dispersion in LCE matrix, both shape memory and dynamic mechanical properties of the resultant composites can be significantly improved.

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The role of ionic-liquid extracted lignin micro/nanoparticles for functionalisation of an epoxy-based composite matrix

Cited by 27 publications

References 39 publications

Design of Sustainable Materials by Cross-linking a Biobased Epoxide with Keratin and Lignin

Design of Sustainable Materials by Cross-linking a Biobased Epoxide with Keratin and Lignin

Ionic liquid‐functionalized reinforcements in epoxy‐based composites: A systematic review

Lignin-liquid crystalline elastomeric composites for shape memory applications and their thermomechanical properties

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