Alkylated alkali lignin for compatibilizing agents of carbon fiber-reinforced plastics with polypropylene

Sakai, Hiroki; Kuroda, Kosuke; Muroyama, Shiori; Tsukegi, Takayuki; Kakuchi, Ryohei; Takada, Kenji; Hata, Ayano; Kojima, Ryosuke; Ogoshi, Tomoki; Omichi, Masaaki; Ninomiya, Kazuaki; Takahashi, Kenji

doi:10.1038/s41428-017-0009-3

Cited by 17 publications

(10 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the fracture surfaces, fiber-matrix separation can be observed, which becomes more significant after surface modification (Figure 9). The compatibility between polypropylene and lignin can, however, be improved if lignin is functionalized with aliphatic groups, as it has been shown in other studies from our laboratory (Sakai et al, 2018a,b). The elastic modulus monotonously increases (Figure 6D) with fiber loading, this is in line with previous reports pointing out that this mechanical property is mainly dependent on the fiber volume fraction and less dependent on other factors (Molnár et al, 1999; Fu et al, 2000).…”

Section: Resultsmentioning

confidence: 52%

Short Carbon Fiber Reinforced Polymers: Utilizing Lignin to Engineer Potentially Sustainable Resource-Based Biocomposites

et al. 2019

Self Cite

View full text Add to dashboard Cite

Carbon fiber reinforced composites have exceptional potential to play a key role in the materials world of our future. However, their success undoubtedly depends on the extent they can contribute to advance a global sustainability objective. Utilizing polymers in these composites that can be potentially derived from biomasses would be certainly vital for next-generation manufacturing practices. Nevertheless, deep understanding and tailoring fiber-matrix interactions are crucial issues in order to design carbon fiber reinforced sustainable resource-based biocomposites. In this study, cellulose derivatives (cellulose propionate and cellulose acetate butyrate) are utilized as model polymer matrices that can be potentially fabricated from biomasses, and the mechanical properties of the prepared short carbon fiber reinforced composites are engineered by means of a functional biobased lignin coating on the fiber surface. Furthermore, polyamide 6 based composites are also prepared, the monomer of this polymer could be obtained using C6 sugars derived from lignocellulosic biomasses in the future (through 5-hydroxymethylfurfural). Lignin was successfully immobilized on the carbon fiber surface via an industrially scalable benign epoxidation reaction. The surface modification had a beneficial impact on the mechanical properties of cellulose propionate and polyamide 6 composites. Furthermore, our results also revealed that cellulose-based matrices are highly sensitive to the presence of rigid fiber segments that restrict polymer chain movements and facilitate stress development. It follows that the physicochemical properties of the cellulosic matrices (molecular weight, crystallinity), associated with polymer chain mobility, might need to be carefully considered when designing these composites. At the same time, polyamide 6 showed excellent ability to accommodate short carbon fibers without leading to a largely brittle material, in this case, a maximum tensile strength of ~136 MPa was obtained at 20 wt% fiber loading. These results were further contrasted with that of a petroleum-based polypropylene matrix exhibiting inferior mechanical properties. Our study clearly indicates that carbon fiber reinforced polymers derived and designed using biomass-derived resources can be promising green materials for a sustainable future.

show abstract

Section: Resultsmentioning

confidence: 52%

Short Carbon Fiber Reinforced Polymers: Utilizing Lignin to Engineer Potentially Sustainable Resource-Based Biocomposites

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…Furthermore, the thermal stability of PSAD can be improved by controlling the hemicellulose content (e.g., via the pretreatment of bagasse), and thus, PSAD is a promising material. In addition, the method for PSAD synthesis directly from bagasse has another advantage of simultaneously obtaining lignin derivatives as another product, which could be used as additives such as adhesives or compatibilizers. , …”

Section: Resultsmentioning

confidence: 99%

Direct Conversion of Sugarcane Bagasse into an Injection-Moldable Cellulose-Based Thermoplastic via Homogeneous Esterification with Mixed Acyl Groups

Suzuki

Hikita

Hernandez

et al. 2021

ACS Sustainable Chem. Eng.

Self Cite

View full text Add to dashboard Cite

Recently, lignocellulosic biomass-based plastics have attracted attention as alternatives to oil-derived plastics. However, the conventional production of biomass-based plastics is a multistep process, requiring harsh pretreatment, chemical modification, and purification, resulting in high costs and environmental burden. Herein, we report the direct conversion of lignocellulosic agricultural waste, sugarcane bagasse, into an injection-moldable cellulosic thermoplastic having good mechanical properties. Specifically, the hydroxy groups in bagasse were substituted by long-/short-chain mixed acyl groups (20:80 molar ratio of decanoyl/acetyl groups) in a one-pot, two-step homogeneous transesterification reaction using the corresponding vinyl esters and an ionic liquid (1-ethyl-3-methylimidazolium acetate) as both solvent and catalyst. The lignin component in the bagasse derivative was separated by precipitation in methanol, and a mixed-ester derivative of cellulose and hemicellulose (polysaccharide acetate decanoate, PSAD) having long- and short- acyl chains was obtained. PSAD could be injection-molded at 205 °C because of the plasticizing effects of the decanoyl groups and the hemicellulose component, despite the ultrahigh weight-average molecular weight of >1.5 × 106 g mol–1. The hemicellulose derivative in PSAD yielded moderate flexibility and sufficiently high mechanical strength for its use as a thermoplastic with tensile and flexural strengths of 50 and 80 MPa, respectively.

show abstract

“… 89 In another effort, introduction of lignins to compatibilized carbon additives within a polypropylene matrix improved the interfacial shear by up to two-fold. 90 As most polyphenols, lignins can interact strongly with proteins through non-specific interactions. Lignins were shown to denaturate quaternary motifs in proteins, specifically, the lignins intercalated within beta-sheets and alpha-helices in zein proteins ( Fig.…”

Section: Lignin Fundamentalsmentioning

confidence: 99%

Multifunctional lignin-based nanocomposites and nanohybrids

et al. 2021

View full text Add to dashboard Cite

show abstract

Alkylated alkali lignin for compatibilizing agents of carbon fiber-reinforced plastics with polypropylene

Cited by 17 publications

References 16 publications

Short Carbon Fiber Reinforced Polymers: Utilizing Lignin to Engineer Potentially Sustainable Resource-Based Biocomposites

Short Carbon Fiber Reinforced Polymers: Utilizing Lignin to Engineer Potentially Sustainable Resource-Based Biocomposites

Direct Conversion of Sugarcane Bagasse into an Injection-Moldable Cellulose-Based Thermoplastic via Homogeneous Esterification with Mixed Acyl Groups

Multifunctional lignin-based nanocomposites and nanohybrids

Contact Info

Product

Resources

About