Castor oil-based biopolyurethane reinforced with wood microfibers derived from mechanical pulp

Visanko, Miikka; Sirviö, Juho Antti; Piltonen, Petteri; Liimatainen, Henrikki; Illikainen, Mirja

doi:10.1007/s10570-017-1286-x

Cited by 10 publications

(7 citation statements)

References 39 publications

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“…In addition to CNFs, the incorporation of LCNFs to different composite materials has become more common, employing a number of matrix materials, such as polylactic acid (Sun et al 2014;Wang et al 2014), starch (Ago et al 2016), polypropylene (Ferrer et al 2016), polycaprolactone (Herzele et al 2016), polystyrene (Ballner et al 2016), and polyurethane (Visanko et al 2017b). Ballner et al (2016) utilized in-situ polymerization of styrene in water stabilized by LCNFs, followed by hot-pressing, and obtained composites with increased bending stress and Charpy impact bending strength in comparison to pure PS (Fig.…”

Section: Nanocompositesmentioning

confidence: 99%

On the potential of lignin-containing cellulose nanofibrils (LCNFs): a review on properties and applications

2019

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This review outlines the present state and recent progress in the area of lignin-containing cellulose nanofibrils (LCNFs), an emerging family of green cellulose nanomaterials. Different types of LCNF raw materials are described, with main focus on wood-based raw materials, and the properties of the resulting LCNFs are compared. Common problems faced in industrial utilization of CNFs are discussed in the light of potential improvements from LCNFs, covering areas such as chemical and energy consumption, dewatering and redispersibility. Out of the potential applications, barrier films, emulsions and nanocomposites are considered.

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Section: Nanocompositesmentioning

confidence: 99%

On the potential of lignin-containing cellulose nanofibrils (LCNFs): a review on properties and applications

2019

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“…However, brittleness was severely compromised for the same reason, yielding much lower elongation at break [9,12]. Compared to PU4(1/4), the increased lignin loading in sample PU8(1/2) led to similar values of the strain at break, whereas higher Young modulus and stress at break were recorded.…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 98%

“…Lignin has been used as a component in polyurethanes based on non-renewable polyols but full replacement of the latter, i.e., as the main component, has been challenging [3]. Moreover, environmentally friendly, fully biosourced and biodegradable or partially biodegradable bioproducts have considered composites of lignin with castor oil [6,7,9], poly ( -caprolactone) [10] or polylactic acid [11], all of which replace petroleum-based counterparts while maintaining the expected J o u r n a l P r e -p r o o f performance. Specially, compared to other vegetable oils, castor oil displays a high viscosity and thermal stability.…”

Section: Introductionmentioning

confidence: 99%

Lignin effect in castor oil-based elastomers: Reaching new limits in rheological and cushioning behaviors

Borrero-López¹,

Valencia²,

Franco³

et al. 2021

Composites Science and Technology

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“…Many studies used polyethylene glycol and glycerol to help disperse lignin, [ 75 ] but these solvents are derived from petroleum sources, which deviates from the green chemistry principle. Other studies used either vegetable oil [ 76 ] or modified vegetable oil [ 77 ] to improve lignin dispersion. Meanwhile, addition of solvents will increase cost and complexity of the manufacturing process.…”

Section: Lignin‐based Polyurethane Elastomermentioning

confidence: 99%

Lignin‐Based Polyurethane: Recent Advances and Future Perspectives

Chen

Zhu

et al. 2020

Macromol. Rapid Commun.

114

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Polyurethane (PU), as a polymer material with versatile product forms and excellent performance, is used in coatings, elastomers, adhesives, and foams widely. However, the raw materials (polyols and isocyanates) of PU are usually made using petroleum‐derived chemicals. With the concern for depletion of petroleum resources and the associated negative impact on the environment, developing technologies that can use renewable raw materials as feedstock has become a research hotspot. Lignin, as an abundant, natural, and renewable organic carbon resource, has been explored as raw material for making polyurethanes because it possesses rich hydroxyl groups on its surface. Meanwhile, compared to vegetable oils, lignin does not compete with food supply and performance of the resulting products is superior. Lignin or modified lignin has been shown to impart the polyurethane material with additional functionalities, such as UV‐blocking ability, hydrophobicity, and flame retardancy. However, the utilization of lignin has encountered some challenges, such as product isolation, heterogeneity, aggregation, steric hindrance, and low activity. This paper summarizes recent research progress on utilizing lignin and modified lignin for bio‐based polyurethane synthesis with a focus on elastomers and foams. Opportunities and challenges for application of the lignin‐based polyurethanes in various fields are also discussed.

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Castor oil-based biopolyurethane reinforced with wood microfibers derived from mechanical pulp

Cited by 10 publications

References 39 publications

On the potential of lignin-containing cellulose nanofibrils (LCNFs): a review on properties and applications

On the potential of lignin-containing cellulose nanofibrils (LCNFs): a review on properties and applications

Lignin effect in castor oil-based elastomers: Reaching new limits in rheological and cushioning behaviors

Lignin‐Based Polyurethane: Recent Advances and Future Perspectives

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