Preparation of synthetic wood composites using ionic liquids

Simmons, Trevor J.; Lee, Sang Hyun; Miao, Jianjun; Miyauchi, Minoru; Park, Tae Joo; Bale, Shyam Sundhar; Pangule, Ravi; Bult, Justin; Martin, Jeffrey G.; Dordick, Jonathan S.; Linhardt, Robert J.

doi:10.1007/s00226-010-0395-6

Cited by 49 publications

(48 citation statements)

References 33 publications

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“…Cellulose-hemicelluloses-lignin composite fibers and films have been prepared from wood and bagasse through the dissolution and regeneration processes (Chen et al 2014;Simmons et al 2010;Sun et al 2011a). The preparation of these composite materials without any pulping or pretreatment step provides a simple and efficient route to fully use lignocellulosic biomass.…”

Section: Introductionmentioning

confidence: 99%

Effect of alkaline pretreatment on the preparation of regenerated lignocellulose fibers from bamboo stem

Chen

Huang

et al. 2016

Cellulose

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In this study, the effect of alkaline pretreatment on preparation of regenerated lignocellulose fibers from bamboo stem was studied in detail. Prior to being dissolved in [Emim]OAc, bamboo stems were ground and treated with different concentrations of sodium hydroxide solutions. The obtained spinning dopes were then extruded into water coagulation bath and regenerated to composite fibers. The properties of the raw materials, spinning dopes, and regenerated fibers were investigated. Results showed that alkaline pretreatment could break the rigid structure of lignocelluloses by removing part of hemicelluloses and lignin as well as changing the polymorphous lattice and C r I of cellulose. The increased specific surface area of raw materials enhanced the accessibility of solvent, promoted the swelling process and shortened the dissolution time. The viscosity of the spinning dopes and the strength of the regenerated fiber reached the maximum value when the bamboo powder was treated with 20 wt% sodium hydroxide at 60°C for 4 h. In addition, the fibers prepared from the alkalitreated raw materials showed round cross-section and wrinkled surface. Therefore, the properties of the regenerated lignocellulose fibers could be improved by employing an appropriate alkali pretreatment of raw materials.

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Section: Introductionmentioning

confidence: 99%

Effect of alkaline pretreatment on the preparation of regenerated lignocellulose fibers from bamboo stem

Chen

Huang

et al. 2016

Cellulose

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“…In view of its UV blocking function given by the phenylpropane structure, lignin could be a prospective substitute for the synthesis of polyurea coatings with improved anti‐UV performance at lower cost. However, it was still of great challenge for the application of lignin in polyurea coatings considering the complicated molecular structure, the high steric hindrance, the low reactivity of lignin, and the poor compatibility between lignin and polyurea matrix.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Polyetheramine‐Grafted Lignin and Its Application in UV‐Resistant Polyurea Coatings

Fang

Liu

Qiu

2019

Macro Materials & Eng

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Lignin‐containing polyurea coating with good ultraviolet (UV) resistance is prepared by partially substituting polyetheramine with enzymatic hydrolysis lignin. Lignin is first grafted by polyetheramine chains via Mannich reaction, which improves its interfacial compatibility with polyurea matrix. The influences of the modified lignin on the chemical and corrosion resistance, UV‐aging property, and thermal stability of the polyurea coatings are studied. It is demonstrated that lignin‐containing polyurea coatings exhibit excellent UV‐aging properties. Aminating lignin with polyetheramine improves its dispersion in the polymer matrix. This work offers a novel method for the high‐value utilization of biomass lignin in anti‐UV polyurea coatings.

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“…Biopolymers are naturally obtainable macromolecules, such as polysaccharides, polyphenols, polyamides, and proteins. However, the preparation of biopolymer‐based composites remains challenging, as many biopolymers have low solubility in conventional solvents …”

Section: Introductionmentioning

confidence: 99%

Preparation of artificial wood films with controlled biodegradability

Kim

et al. 2015

J of Applied Polymer Sci

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Artificial wood films containing cellulose, xylan, and lignin were easily prepared by the dissolution of wood components in 1-ethyl-3-methylimidazolium acetate followed by reconstitution with distilled water. The composition and characteristics of wood films were highly controllable and predictable through the variation of the concentration of each component in the wood solution. The water vapor solubility of the wood films was increased when the xylan content was increased and the content of lignin was decreased. The biodegradability of the artificial wood films was investigated with cellulase from Trichoderma viride. The relative degradability of the wood film prepared with 5% cellulose and 5% lignin was 42%, whereas that of the wood film made with 5% cellulose and 5% xylan was 189%. The biodegradability of cellulose in the wood films correlated well with the content of xylan and lignin, and it was enhanced when the xylan content was increased and the content of lignin was decreased.

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Preparation of synthetic wood composites using ionic liquids

Cited by 49 publications

References 33 publications

Effect of alkaline pretreatment on the preparation of regenerated lignocellulose fibers from bamboo stem

Effect of alkaline pretreatment on the preparation of regenerated lignocellulose fibers from bamboo stem

Preparation of Polyetheramine‐Grafted Lignin and Its Application in UV‐Resistant Polyurea Coatings

Preparation of artificial wood films with controlled biodegradability

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