Preparation and Performance of Room Temperature Phosphorescent Cellulose-based Transparent Wood

ZHANG Jun; WANG Yanwei; ZHANG Xinru; XU Mingcong; LIU Shouxin; LI Wei

doi:10.12326/j.2096-9694.2026019

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Preparation and Performance of Room Temperature Phosphorescent Cellulose-based Transparent Wood
1.State Key Laboratory of Woody Oil Resources Utilization，Northeast Forestry University，Harbin 150040， Heilongjiang，China
2.Jiusheng Flooring Co.，Ltd.，Nanxun 313009，Zhejiang，China
Vol. 40, Issue 3, Pages: 38-48(2026)
DOI： 10.12326/j.2096-9694.2026019
稿件说明：

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张钧,王艳伟,张馨茹等.室温磷光纤维素基透明木材的制备与性能[J].木材科学与技术,2026,40(03):38-48. DOI： 10.12326/j.2096-9694.2026019.

ZHANG Jun,WANG Yanwei,ZHANG Xinru,et al.Preparation and Performance of Room Temperature Phosphorescent Cellulose-based Transparent Wood[J].Chinese Journal of Wood Science and Technology,2026,40(03):38-48. DOI： 10.12326/j.2096-9694.2026019.

摘要

当前室温磷光透明木材主要依赖不可降解石油基聚合物作为填充材料，存在骨架与功能组分相容性欠佳等短板，难以满足防伪识别及智能光响应等领域对兼具优异光学、机械和可降解特性生物质材料的需求。研究以轻木（

Ochroma lagopus

）为研究对象，采用H

溶液-蒸汽法脱木质素，以羧甲基纤维素（carboxymethyl cellulose，CMC）为填充物，制备室温磷光纤维素基透明木材（room temperature phosphorescent cellulose-based transparent wood，RTP-CTW）。结果表明，H

溶液-蒸汽法可高效脱除木质素与半纤维素，较好

保留以纤维素为主体的木材细胞壁骨架。CMC经真空浸渍填充至木材孔隙中，并与骨架中的纤维素组分形成氢键，从而降低界面光散射并增强结构结合。RTP-CTW在254 nm紫外光激发下，于484 nm处发射青蓝色磷光，磷光寿命450.27 ms、最长余晖达7 s，磷光量子产率8.12%。CMC中的羧基和羰基发光单元是材料光致发光的主要来源，CMC与木材骨架之间的氢键网络可通过限域作用抑制非辐射跃迁并屏蔽氧气，使材料表现出蓝色至绿色可调室温磷光。RTP-CTW的最大透光率为81%、最高雾度为92%、导热系数为0.33 W/（m·K），拉伸强度高于脱木质素木材和CMC，并在土壤环境中20天内逐渐分解并融入土壤，展现出良好的降解潜力。同时，RTP-CTW具备湿度响应和加热可恢复的可逆特性，在防伪识别及智能光响应等领域具有潜力。

Abstract

Current room-temperature phosphorescent transparent wood mainly relies on non-degradable petroleum-based polymers as fillers. However

such systems suffer from poor compatibility between the wood skeleton and functional components

making it difficult to meet the demand for biomass-based materials with excellent optical

mechanical

and degradable properties in fields such as anti-counterfeiting identification and intelligent photoresponsive applications. In this study

balsa wood (

Ochroma lagopus

) was used as the raw material. An H

bleaching-steam method was adopted for delignification

and carboxymethyl cellulose (CMC) was used as the filler to prepare room-temperature phosphorescent cellulose-based transparent wood (RTP-CTW). The results showed that the H

bleaching-steam method efficiently removed lignin and hemicellulose while well preserving the wood cell-wall skeleton mainly composed of cellulose. Through vacuum impregnation

CMC was filled into the wood pores and formed hydrogen bonds with the cellulose components in the skeleton

thereby reducing interfacial light scattering and enhancing structural bonding. Under 254 nm ultraviolet excitation

RTP-CTW emitted cyan-blue phosphorescence at 484 nm

with a phosphorescence lifetime of 450.27 ms

a maximum afterglow duration of 7 s

and a phosphorescence quantum yield of 8.12%. The carboxyl and carbonyl luminescent units in CMC were the main origin of the photoluminescence. The hydrogen-bonding network between CMC and the wood skeleton suppressed non-radiative transi

tions through a confinement effect and shielded oxygen

enabling tunable room-temperature phosphorescence from blue to green. RTP-CTW exhibited a maximum transmittance of 81%

a maximum haze of 92%

and a thermal conductivity of 0.33 W/(m·K). It shows tensile strength higher than delignified wood and CMC. Moreover

RTP-CTW can degrade in soil within 20 days

indicating good degradation potential. RTP-CTW showed reversible humidity-responsive and heat-recoverable properties

suggesting potential applications in anti-counterfeiting identification and intelligent photoresponsive materials.

关键词

Keywords

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