A small amount of nanoparticulated plant biomass, lignin, enhances the heat tolerance of poly(ethylene carbonate)

Shikinaka, Kazuhiro; Sotome, Haruka; Kubota, Yuki; Tominaga, Yoichi; Nakamura, Masaya; Navarro, R.; Otsuka, Yuichiro

doi:10.1039/c7ta09216d

Cited by 23 publications

(32 citation statements)

References 29 publications

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“…SESC lignin was extracted from Japanese cedar and rice straw as a nanoparticle, with a diameter of approximately 40 nm, according to the method reported in our previous studies . Ultrapure water was obtained by using a Milli‐Q® Advantage A10® system (MilliporeTM, Eschborn, Germany) and employed throughout the study.…”

Section: Figurementioning

confidence: 99%

Plant‐Based Antioxidant Nanoparticles without Biological Toxicity

et al. 2018

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Here, we present a function to derive non‐deteriorated nanoparticulated lignin as an antioxidant without biological toxicity that is supplied through the simultaneous enzymatic saccharification and comminution of plants. The lignin exhibits an oxygen radical absorption capacity, even in its macromolecular nature. The non‐deteriorated lignin nanoparticles never inhibit the biological activity of living things, despite their antioxidant nature. The oxygen radical absorption capacity of lignin is dependent on its botanical origin and monomeric structure. A stable organic radical in lignin is responsible for the antioxidant nature of non‐deteriorated lignin. The organic radical of non‐deteriorated lignin, which yields a distinct signal on electron spin resonance spectra, serves as a spin trap reagent that detects the emergence of short lifespan radicals as the change of radical concentration of the lignin. The presented discovery of non‐deteriorated lignin will induce not only the industrial utilization of plant biomass polymers in pharmaceuticals and reagents, but also advance our scientific understanding of the antioxidant function of native lignin.

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Section: Figurementioning

confidence: 99%

Plant‐Based Antioxidant Nanoparticles without Biological Toxicity

et al. 2018

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“…8 . Furthermore, FT-IR spectroscopy revealed no hydrogen bonding between the PEC and lignin 52 . These results indicate that PEC and non- deteriorated lignin behave as individual polymers without strong molecular interactions in the composite films.…”

Section: Unique Function Of Lignin Extracted By Sesc As Anmentioning

confidence: 99%

“…This nondeteriorated lignin did not require addition of supporting inorganic, halogen, or phosphorus compounds. The nondeteriorated lignin also acts as an antiplasticizer in PEC film 52 as with the stereorandom polypropylene shown in Fig. 6 37 , i.e., adding non-deteriorated lignin endows the PEC film with not only heat tolerance but also mechanical strength.…”

Section: Unique Function Of Lignin Extracted By Sesc As Anmentioning

confidence: 99%

“…9, the non-deteriorated lignin exists as amorphous particles with diameters of several hundred nm. Thus, it is speculated that non-deteriorated lignin enhances the heat resistance of PEC by scavenging thermal free radicals via the guaiacol groups present on the large specific surface area of its nanoparticulate platelets 52 .…”

Section: Unique Function Of Lignin Extracted By Sesc As Anmentioning

confidence: 99%

“…excellent heatproof ller In this section, we introduce the superior ability of nondeteriorated lignin extracted by SESC, relative to that of conventional petroleum-based materials, to function as a heatproof filler for synthetic polymers 52 . As an example, we demonstrate how non-deteriorated lignin enhances the heat tolerance of poly ethylene carbonate PEC .…”

Section: Unique Function Of Lignin Extracted By Sesc As Anmentioning

confidence: 99%

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Utilization of Lignocellulosic Biomass via Novel Sustainable Process

et al. 2018

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Substituent Effect on Physical Properties of Whitening Lignin

Shikinaka,

Suzuki,

Otsuka

2024

ChemistrySelect

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In this paper, the substituent effect on physical properties of whitening lignin prepared by solvent‐controlled encapsulation (SCE) was estimated. Firstly, it was revealed that lignin whitening via SCE requires the modification of alkyl isocyanate containing the alkyl chain with more than four carbon atoms. This indicates the importance of the bulkiness of the substituent of isocyanate moiety for the realization of SCE, i. e., lignin whitening. Secondly, the thermal stability of whitened lignin is dramatically improved by the replacement of the mono‐isocyanate moiety with diisocyanate moiety. Thirdly, the whitened lignin modified by m‐xylylene‐diisocyanate exhibited high thermal stability and electrical insulating properties, suggesting its possible application to insulating fillers for poly(ϵ‐caprolactone).

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A small amount of nanoparticulated plant biomass, lignin, enhances the heat tolerance of poly(ethylene carbonate)

Abstract: A small amount of non-deteriorated lignin dramatically enhances the heatproof properties of a synthetic polymer.

Cited by 23 publications

References 29 publications

Plant‐Based Antioxidant Nanoparticles without Biological Toxicity

Plant‐Based Antioxidant Nanoparticles without Biological Toxicity

Utilization of Lignocellulosic Biomass via Novel Sustainable Process

Substituent Effect on Physical Properties of Whitening Lignin

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