Impact of ionic liquid type on the structure, morphology and properties of silk-cellulose biocomposite materials

Stanton, John; Xue, Ye; Pandher, Prabhdeep; Malek, Laura; Brown, Tyler; Hu, Xiao; Cruz, David Salas‐de la

doi:10.1016/j.ijbiomac.2017.11.137

Cited by 63 publications

(58 citation statements)

References 53 publications

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“…Interestingly, the d ‐spacing increases from 5.28 to 13.4 nm as the coagulation agent changes from ethanol to hydrogen peroxide. This peak is related to the average microfibril cross‐sectional dimension and is dependent on the composition of the materials and type of ionic liquid, as previously published . The diameter of the microfibrils is known to range from about 2 to 20 nm .…”

Section: Resultsmentioning

confidence: 56%

“…Having the ability to control the properties of these biomaterial‐based batteries, including morphological, thermal and mechanical properties, is essential in creating devices which are minimally harmful in the human body and are advantageous in the medical field. In previous studies, it has been shown that the morphology of biocomposites can be changed as a function of ionic liquid and composition . This is important because it can induce changes in physicochemical properties of the natural‐based material, which can lead to specificity in application.…”

Section: Introductionmentioning

confidence: 99%

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Morphology and ionic conductivity relationship in silk/cellulose biocomposites

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Morales

et al. 2019

Polymer International

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The relationship between morphology and the ionic conductivity of polysaccharide–protein bio‐electrolyte membranes is explored in this study. Structural proteins and polysaccharides form hydrophobic and electrostatic interactions, and the resulting matrices can exhibit novel and useful properties. However, transforming these natural biomacromolecules from their native state to a more usable form is challenging. The structural, morphological, thermal, mechanical and electrical properties of biomaterials composed of microcrystalline cellulose and Bombyx mori silk when regenerated together using ionic liquids and various coagulation agents were investigated using a diverse set of techniques including Fourier transform infrared spectroscopy, SEM, TGA, DSC, X‐ray scattering, AFM‐based nanoindentation and dielectric relaxation spectroscopy. The surface topography of the films reveals morphological changes with varying coagulation agents and ionic liquids. It was found that the thermal and mechanical properties were dependent on intermolecular interactions dictated by the type of ionic liquid used during the coagulation process. X‐ray scattering provided information on how the cellulose crystallinity varied with coagulation agent. Specifically, samples coagulated with hydrogen peroxide showed an increase in cellulose crystallinity impacting properties such as elasticity, hardness and ionic conductivity of the biocomposites. In addition, the results revealed a strong correlation between β‐sheet content and ionic conductivity and cellulose crystallinity. The results provided evidence that the ionic conductivity is dependent on protein β‐sheet content and cellulose crystallinity. © 2019 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Morphology and ionic conductivity relationship in silk/cellulose biocomposites

Blessing

Trout

Morales

et al. 2019

Polymer International

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“…Differential scanning calorimetry analysis showed an increased porosity (108.9 mg/g) at 130 • C/2h compared to 100 • C/5h (107.8 mg/g) and produced 97.7 and 78.7% glucose, respectively, on subsequent hydrolysis. Stanton et al (2018) also studied the effect of different imidazolium-based ILs on the structure and properties of microcrystalline cellulose and silk blended biocomposite films. The results revealed that the intermolecular interactions in the films are directly correlated to the anion structure of the ILs.…”

Section: Ionic Liquidsmentioning

confidence: 99%

Recent Trends in the Pretreatment of Lignocellulosic Biomass for Value-Added Products

et al. 2018

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Lignocellulosic biomass (LCB) is the most abundantly available bioresource amounting to about a global yield of up to 1. 3 billion tons per year. The hydrolysis of LCB results in the release of various reducing sugars which are highly valued in the production of biofuels such as bioethanol and biogas, various organic acids, phenols, and aldehydes. The majority of LCB is composed of biological polymers such as cellulose, hemicellulose, and lignin, which are strongly associated with each other by covalent and hydrogen bonds thus forming a highly recalcitrant structure. The presence of lignin renders the bio-polymeric structure highly resistant to solubilization thereby inhibiting the hydrolysis of cellulose and hemicellulose which presents a significant challenge for the isolation of the respective bio-polymeric components. This has led to extensive research in the development of various pretreatment techniques utilizing various physical, chemical, physicochemical, and biological approaches which are specifically tailored toward the source biomaterial and its application. The objective of this review is to discuss the various pretreatment strategies currently in use and provide an overview of their utilization for the isolation of high-value bio-polymeric components. The article further discusses the advantages and disadvantages of the various pretreatment methodologies as well as addresses the role of various key factors that are likely to have a significant impact on the pretreatment and digestibility of LCB.

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“…Solvents have a significant impact on the dissolution of materials, specifically for the creation of protein-polysaccharide composites, therefore requiring unique solvents. The dissolution process is essential as it provides a framework to combine and blend the materials making up the composite [22]. Solvents, such as ionic liquids, have shown excellent capabilities in creating such composites.…”

Section: Ionic Liquids As Solventsmentioning

confidence: 99%

“…Ionic liquids as solvents have properties, such as stability, reusability, and conductivity [23]. Ionic liquids are generally preheated in an oven to remove any excess water before being used as a solvent [22].…”

Section: Ionic Liquids As Solventsmentioning

confidence: 99%

Protein–Polysaccharide Composite Materials: Fabrication and Applications

et al. 2020

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Protein–polysaccharide composites have been known to show a wide range of applications in biomedical and green chemical fields. These composites have been fabricated into a variety of forms, such as films, fibers, particles, and gels, dependent upon their specific applications. Post treatments of these composites, such as enhancing chemical and physical changes, have been shown to favorably alter their structure and properties, allowing for specificity of medical treatments. Protein–polysaccharide composite materials introduce many opportunities to improve biological functions and contemporary technological functions. Current applications involving the replication of artificial tissues in tissue regeneration, wound therapy, effective drug delivery systems, and food colloids have benefited from protein–polysaccharide composite materials. Although there is limited research on the development of protein–polysaccharide composites, studies have proven their effectiveness and advantages amongst multiple fields. This review aims to provide insight on the elements of protein–polysaccharide complexes, how they are formed, and how they can be applied in modern material science and engineering.

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Impact of ionic liquid type on the structure, morphology and properties of silk-cellulose biocomposite materials

Cited by 63 publications

References 53 publications

Morphology and ionic conductivity relationship in silk/cellulose biocomposites

Morphology and ionic conductivity relationship in silk/cellulose biocomposites

Recent Trends in the Pretreatment of Lignocellulosic Biomass for Value-Added Products

Protein–Polysaccharide Composite Materials: Fabrication and Applications

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