All-biobased transparent-wood: A new approach and its environmental-friendly packaging application

Hai, Le Van; Muthoka, Ruth M.; Panicker, Pooja S.; Agumba, Dickens O.; Pham, Hoa D.; Kim, Jaehwan

doi:10.1016/j.carbpol.2021.118012

Cited by 37 publications

(18 citation statements)

References 47 publications

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“…[20] Besides, the DW (71.4%) has a higher crystallinity index than the NW (63.7%) probably due to the removal of the amorphous and nonoriented lignin contents. [21] The composites were fabricated by infiltrating the DW templates with highly optically transparent PVP as the filling polymer. The PVP has a refractive index of ≈1.53, similar to the wood cell wall components.…”

Section: Preparation and Structural Characteristicsmentioning

confidence: 99%

Laminated Transparent Woods with Adjustable Optical and Enhanced Mechanical Properties

Liang

Xia

et al. 2022

Adv Materials Technologies

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Transparent wood is promising for energy‐saving buildings, but its poor mechanical properties in transverse direction dramatically limit its applications. To resolve the problem, a novel processing technology is developed to fabricate laminated transparent woods. Various kinds of transparent woods are prepared by stacking partially impregnated woods in different styles and then compressing them. The wood template contents in these transparent woods are significantly increased by the partial impregnation compared with traditional full impregnation. The influence of lamination structures on the properties of the transparent woods is also evaluated. As the number of laminate layers increases from one to three, the optical transmittance reduces from ≈70% to 44%, respectively, while the haze increases from 32% to 66%. The isotropy of scatter light distribution could be achieved by controlling lamination structures for more uniformity in indoor illumination. The mechanical properties of the transparent woods are dramatically enhanced, and the highest tensile and flexural strength can reach 134.0 and 192.3 MPa, respectively. Additionally, the direction‐dependence of mechanical strength is reduced by cross‐laminating. The adjustable optical features, excellent mechanical strengths, and low thermal conductivity endow the prepared transparent woods a promising candidate for energy‐efficient buildings applications.

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Section: Preparation and Structural Characteristicsmentioning

confidence: 99%

Laminated Transparent Woods with Adjustable Optical and Enhanced Mechanical Properties

Liang

Xia

et al. 2022

Adv Materials Technologies

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“…Resin selection is the most critical step in the impregnation resin part. Polymers that match the refractive index of wood templates are epoxy resin, polylactic acid, poly(methyl methacrylate), poly(vinyl alcohol) and other polymers and the recently reported more environmentally friendly citron acrylate extracted from orange peel. − TW is a biomass-based material with high transparency, high haze, good mechanical properties, and low brittleness. − Currently, TW has been used in structural composites, thermal energy storage materials, photoluminescent materials, packaging materials, and alternative materials to architectural glass. In addition, TW can effectively absorb sunlight, which is important for comfortable and energy-saving interior lighting.…”

Section: Introductionmentioning

confidence: 99%

“…23−26 TW is a biomassbased material with high transparency, high haze, good mechanical properties, and low brittleness. 27−29 Currently, TW has been used in structural composites, 30 thermal energy storage materials, 31 photoluminescent materials, 32 packaging materials, 33 and alternative materials to architectural glass. In addition, TW can effectively absorb sunlight, which is important for comfortable and energy-saving interior lighting.…”

Section: ■ Introductionmentioning

confidence: 99%

A Multilayer Transparent Bamboo with Good Optical Properties and UV Shielding Prepared by Different Lamination Methods

Wang

et al. 2022

ACS Sustainable Chem. Eng.

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Transparent bamboo (TB) is a new type of biomass and light-transmitting material. However, due to the high density of bamboo, it is arduous for polymers to impregnate the bamboo, and the thickness of bamboo becomes a key factor limiting the development of transparent bamboo. Here, inspired by plywood, we report a multilayer transparent bamboo (MLTB). The aim of this experiment is to study the performance of MLTB under different lamination methods, including the influence of the number of layers and lamination direction. It was found that there were different effects caused by lamination combination on the optical and mechanical properties of MLTB. Meanwhile, the obvious anisotropy of TB is effectively improved due to the laminated structure. It was found that the mechanical and optical properties of MLTB can be effectively adjusted by different assembly methods. The obtained MLTB combines high strength, good hydrophobicity, unique texture appearance, high light transmittance, and excellent resistance to ultraviolet rays simultaneously. It has broad prospects for practical application in the fields of home decoration, construction, structural materials, etc.

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“…Wood is one of the most abundant renewable materials and is widely used in construction, decoration and furniture applications [1][2][3]. However, as a hygroscopic material, wood is sensitive to water, fungi, insects, etc., which restrains its wider applications [4,5].…”

Section: Introductionmentioning

confidence: 99%

In Situ Construction of Thermotropic Shape Memory Polymer in Wood for Enhancing Its Dimensional Stability

et al. 2022

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The extension of wood to a wider field has been restrained significantly due to its dimensional instability that arises from variation in moisture content, which in turn brings about the risk of cracking, warping or distortion. This work proposed a novel strategy to stabilize wood by means of the in situ construction of a thermotropic shape memory polymer (SMP) inside wood. The cross-linked copolymer network (PMP) with good shape memory behavior was first investigated based on the reaction of methyl methacrylate (MMA) and polyethylene glycol diacrylate (PEGDA) in a water/ethanol solution; then, the PMP was constructed inside wood via vacuum-pressure impregnation and in situ polymerization. The weight gain, volume increment and morphology observations clearly revealed that the PMP was mainly present in wood cell lumens, cell walls and pits. The presence of PMP significantly enhanced the dimensional stability of and reduced the cracks in wood. The desirable shape recovery abilities of PMP under heating-cooling cycles were considered to be the main reasons for wood dimensional stabilization, because it could counteract the internal stress or retard the shrinkage of cell walls once water was evaporated from the wood. This study provided a novel and reliable approach for wood modification.

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All-biobased transparent-wood: A new approach and its environmental-friendly packaging application

Cited by 37 publications

References 47 publications

Laminated Transparent Woods with Adjustable Optical and Enhanced Mechanical Properties

Laminated Transparent Woods with Adjustable Optical and Enhanced Mechanical Properties

A Multilayer Transparent Bamboo with Good Optical Properties and UV Shielding Prepared by Different Lamination Methods

In Situ Construction of Thermotropic Shape Memory Polymer in Wood for Enhancing Its Dimensional Stability

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