Properties and thermal degradation study of blend films with poly(4‐vinylpyridine) and lignin

Cunxiu, Guan; Chen, Donghua; Tang, Wanjun; Liu, Changhua

doi:10.1002/app.21465

Cited by 20 publications

(18 citation statements)

References 16 publications

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“…Miscibility was claimed for other polymers as well. Liu et al [120,121] found that poly(4-vinylpyridine) is miscible with lignin and a similar conclusion was drawn about poly(vinylpyrrolidone)/lignin blends by Silva et al [122], as well as about polypolyanlinine/lignin blends by Rodrigues et al [114]. This latter group studied its blends with FTIR spectroscopy and cyclic voltammetry and drew this conclusion from the results.…”

Section: Other Polymers H-bondsmentioning

confidence: 66%

“…On the other hand, plastics containing aromatic rings can form also stronger,  stacking interactions, thus better compatibility, partial miscibility and better properties can be expected upon the blending of the two components. Numerous papers have been published on such blends and the controversy characterizing the study of polyolefin/lignin blends can be observed also for Miscibility was claimed also for a number of other polymers containing aromatic rings, like poly(4-vinyl pyridine) [112,113] and polyaniline [114], but most of the polymers including PET form not only  electron interactions, but also H-bonds with lignin. Considering all the information offered in the papers published on aromatic polymer/lignin blends, we can conclude that interactions are generally stronger in these blends than in polyolefin/lignin combinations [115].…”

Section: Polymers With Aromatic Ringsmentioning

confidence: 99%

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Polymer/lignin blends: Interactions, properties, applications

Kun

Pukánszky

2017

European Polymer Journal

323

252

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Lignin is a cheap material available in large quantities, thus the interest in its valorization is increasing both in industry and academia. A possible approach towards value added applications is using it as a component in plastics. However, blending lignin with polymers is not straightforward because of the polarity of lignin molecules resulting in strong self-interactions. The structure and properties of lignin depend on the extraction technology used for its production. The structure of lignin is complex and its characterization difficult. Lignin has been added to various polymers in the last few decades and the resulting material was sometimes called blend, while in other cases composite. Based on arguments we show that lignin forms blends, and these are classified and discussed according to the interactions developing in them, since competitive interactions determine the structure and properties of the blends. Usually even strong interactions are not sufficient to result in complete miscibility. As a consequence lignin is often modified chemically or by plasticization to improve its dispersion in plastics, or a compatibilizer is added to increase interfacial adhesion. Lignin can be used also as a reactive component in various resins and polymers.

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Section: Other Polymers H-bondsmentioning

confidence: 66%

Section: Polymers With Aromatic Ringsmentioning

confidence: 99%

Polymer/lignin blends: Interactions, properties, applications

Kun

Pukánszky

2017

European Polymer Journal

323

252

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“…Composites and blends of lignin with cellulose [39], cellulose acetate [40], xanthan gum [41], PEG [42], PVA [43], PLA [44], PVP [45,46] are known from the literature. Even though there may be only weak interaction between lignin and principal constituent, addition of lignin may offer advantages such as more control over water uptake [41] and improved mechanical properties [31,45].…”

Section: Q2mentioning

confidence: 99%

Novel non-cytotoxic alginate–lignin hybrid aerogels as scaffolds for tissue engineering

Quraishi

Martins

Barros

et al. 2015

The Journal of Supercritical Fluids

189

140

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a b s t r a c tThis paper presents a novel approach toward the production of hybrid alginate-lignin aerogels. The key idea of the approach is to employ pressurized carbon dioxide for gelation. Exposure of alginate and lignin aqueous alkali solution containing calcium carbonate to CO 2 at 4.5 MPa resulted in a hydrogel formation. Various lignin and CaCO 3 concentrations were studied. Stable hydrogels could be formed up to 2:1 (w/w) alginate-to-lignin ratio (1.5 wt% overall biopolymer concentration). Upon substitution of water with ethanol, gels were dried in supercritical CO 2 to produce aerogels. Aerogels with bulk density in the range 0.03-0.07 g/cm 3 , surface area up to 564 m 2 /g and pore volume up to 7.2 cm 3 /g were obtained. To introduce macroporosity, the CO 2 induced gelation was supplemented with rapid depressurization (foaming process). Macroporosity up to 31.3 ± 1.9% with interconnectivity up to 33.2 ± 8.3% could be achieved at depressurization rate of 3 MPa/min as assessed by micro-CT. Young's modulus of alginate-lignin aerogels was measured in both dry and wet states. Cell studies revealed that alginate-lignin aerogels are non-cytotoxic and feature good cell adhesion making them attractive candidates for a wide range of applications including tissue engineering and regenerative medicine.

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“…Miscibility was claimed for other polymers as well. Liu et al [38,39] found that poly(vinyl pyrrolidone) is miscible with lignin. A similar conclusion was drawn about polyaniline/lignin blends by Rodrigues at al.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen bonding interactions in poly(ethylene-co-vinyl alcohol)/lignin blends

Podolyák

Kun

Renner

et al. 2018

International Journal of Biological Macromolecules

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Blends were prepared from lignin and ethylene-vinyl alcohol (EVOH) copolymers to study the effect of hydrogen bonding interactions on compatibility and structure. The vinyl alcohol (VOH) content of the copolymers changed between 52 and 76 mol%, while the lignin content of the blends varied between 0 and 60 vol%. Low density polyethylene with 0 mol% VOH content was used as reference. The components were homogenized in an internal mixer and they were characterized by various methods including Fourier transform infrared spectroscopy (FTIR), dynamic mechanical analysis, differential scanning calorimetry and scanning electron microscopy. The results of the experiments proved that strong hydrogen bonds form between the two components shown by FTIR spectroscopy, a shift in the relaxation temperatures of the matrix polymer and by the decrease of crystallite size and crystallinity with increasing lignin content. In spite of the strong interactions, heterogeneous structure forms in the studied blends since self-interactions within the neat components are also very strong. The size of dispersed lignin particles is determined by competitive interactions in the blends; stronger EVOH/lignin interactions result in smaller particle size. Although hydrogen bonds are strong, miscible polymer/lignin blends can be prepared only by applying other approaches like plasticization or chemical modification.

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Properties and thermal degradation study of blend films with poly(4‐vinylpyridine) and lignin

Cited by 20 publications

References 16 publications

Polymer/lignin blends: Interactions, properties, applications

Polymer/lignin blends: Interactions, properties, applications

Novel non-cytotoxic alginate–lignin hybrid aerogels as scaffolds for tissue engineering

Hydrogen bonding interactions in poly(ethylene-co-vinyl alcohol)/lignin blends

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