Chemical surface modification of lignin particle and its application as filler in the polypropylene composites

Yeo, Jun-Seok; Seong, Dong-Wook; Hwang, Seok‐Ho

doi:10.1016/j.jiec.2015.06.010

Cited by 58 publications

(27 citation statements)

References 20 publications

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“…Therefore, lignin could be used as a filler to reduce the cost of products and improve biodegradability. For many years, lignin has been investigated as antioxidant [20][21][22] and as compatibilizer [20,23] because of a large number of polar functional groups. Moreover, lignin presents a good capacity to adsorb hazardous metal ions [24,25] and is a source to prepare precursors for carbon-based materials, such as activated carbon or carbon fibers [26] and may be used as a starting material for hydrogel applications [27,28].…”

Section: Introductionmentioning

confidence: 99%

Nucleation ability of advanced functional silica/lignin hybrid fillers in polypropylene composites

Borysiak

Kłapiszewski

Bula

et al. 2016

J Therm Anal Calorim

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Novel advanced functional silica/lignin hybrid fillers were synthesized for the purpose of their application in composites with polypropylene. The use of lignin for the production of hybrid fillers is justified due to the advantages such as reduction in cost of products, improvement in biodegradability as well as antioxidant and antimicrobial properties. The study encompasses an analysis of the dispersive and morphological properties of the hybrid fillers, and investigations of phase transitions and the supermolecular structure of the composites by means of differential scanning calorimetry, polarized light microscopy, and X-ray diffractometry. The nucleation activity of the hybrid fillers was found to be strongly correlated with the chemical composition of the fillers, and their dispersive properties and porous structure characteristics. Furthermore, the particle size and area surface of the hybrid fillers play an important role in the development of polymorphic varieties of the polypropylene matrix. The study also discusses the mechanism of the formation of the b-PP variety and the transcrystalline structure in the context of the nucleation ability of the hybrid fillers. The investigations are very significant because they address the impact of the actual physicochemical parameters of the hybrid fillers on the nucleation ability and structure of composite materials.

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Section: Introductionmentioning

confidence: 99%

Nucleation ability of advanced functional silica/lignin hybrid fillers in polypropylene composites

Borysiak

Kłapiszewski

Bula

et al. 2016

J Therm Anal Calorim

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“…In addition, the length of the alkyl chains is not relevant on resorcinols neither on catechols. With regard to the HAT process, a double bond in a substituent favors it, while the -COOH group shows a contrary [8][9][10][11]. In particular, the catechol moiety (1,2-dihydroxybenzene) is considered as an important component of natural antioxidants and for that reason, this is present in many studies [1,12,13].…”

Section: Introductionmentioning

confidence: 99%

The substituent effect on the antioxidant capacity of catechols and resorcinols

2016

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effect. The combination of a double bond with a -COOH group, in the substituent, increases the BDE and reduces the electron donor capacity, and this result suggests that this combination induces a reduction in the antioxidant capacity in one polyphenol compound. In several reports, an intramolecular hydrogen bond has been proposed within to the most stable structure of catechol. However, by using arguments from the atoms in molecules approach and the electron localization function, we show that such an interaction is not relevant to stabilize this conformation and consequently and this is the reason that explains the unimportance of this interaction in the properties studied here and in previous studies.

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“…However, lignin contains a large number of polar groups. It has, therefore, poor compatibility with non‐polar polymers as polyethylene and polypropylene (PP), causing very poor dispersion of lignin in these polymers . As a result, the great potential of lignin as efficient free‐radical scavenger and reinforcing/toughening agents in non‐polar polymer systems so far has not been adequately demonstrated.…”

Section: Introductionmentioning

confidence: 99%

“…For instance, when modified lignin was employed to replace pristine lignin, the dispersion of lignin in non‐polar polymers is typically not improved significantly and hence the enhancement in material performances can hardly be achieved . To address this issue, recently greater efforts have been devoted to improve the dispersion of lignin in polymer matrices via physical means . And in our former work, freeze‐drying manipulation was successfully developed to improve compatibility of polar lignin and non‐polar PP, which significantly enhance the mechanical and thermal properties of PP, and improve the anti‐oxidant properties of lignin in PP composites, however, which is limited only to the water‐soluble lignin .…”

Section: Introductionmentioning

confidence: 99%

Maleic anhydride‐modified polyolefins as compatibilizer for lignin‐reinforced polypropylene composites

Chen

Zhang

2018

Polymer Composites

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Lignin is an attractive renewable reinforcing agent for polyolefins, which is also an excellent free‐radical scavenger and promising low‐cost antioxidant for polymers, however, exhibiting poor compatibility with non‐polar polymers. In this work, modified polyolefins containing maleic anhydride group like polybond (PB) were used as compatibilizer and incorporated into polypropylene (PP) with lignin to improve the blending ability of the polar filler in the non‐polar matrix. The composite containing individual lignin possesses a much smaller elongation at break than neat PP, whereas owing to the significantly improved dispersion by compatibilizer, the incorporation of compatibilizer into PP/lignin blends gives rise to remarkably increased elongation at break. Besides, lignin greatly slows down the UV‐induced degradation of PP and dramatically enhances anti‐oxidant effect of PP composites in the existence of compatibilizer, in which the elongation at break of PP/PB/2%lignin retains 77% of its original value when it reduces by 92% for neat PP after 240 h of UV irradiation. POLYM. COMPOS., 40:2594–2601, 2019. © 2018 Society of Plastics Engineers

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Chemical surface modification of lignin particle and its application as filler in the polypropylene composites

Cited by 58 publications

References 20 publications

Nucleation ability of advanced functional silica/lignin hybrid fillers in polypropylene composites

Nucleation ability of advanced functional silica/lignin hybrid fillers in polypropylene composites

The substituent effect on the antioxidant capacity of catechols and resorcinols

Maleic anhydride‐modified polyolefins as compatibilizer for lignin‐reinforced polypropylene composites

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