纤维素纳米晶体光子膜的构筑及其刺激响应性能研究

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关键词：纤维素纳米晶体；光子结构色；低共熔溶剂；湿度可逆性能中图分类号：TS7 文献标识码：A DOI： 10.11980/j.issn.0254-508X.2025.11.001

Cellulose Nanocrystal Photonic Films： Fabrication and Stimuli-responsive Properties

MENG Yahui 1，2，3 JIA Zhixin1.2* GUO Daliang² ZHAO Huifang²SHA Lizheng²SHEN Jing1* （1.CollgeofMaterialsSienceandEnginering，NortheastForestryUnversity，Haerbin，HeilongjiangProvince006; 2.ScholofEiromentlndNatureResouces，Zhejng UniersityfiencendTechologHngzhohejgProvnc; 3.Zhejiang Jingxing Paper Industry Co.，Ltd.，Jiaxing，Zhejiang Province，） （ ∗ E-mail： jzxss21@zust.edu.cn；jingshen.china@hotmail.com）

Abstract：Inthisstudy，aphotonic film withboth mechanicalpropertiesandtunablestructuralcolorwas prepared byincorporating deepeutecticsolvents （DES）intocelulose nanocrystals（CNC）through layeredcasting，and itwas namedCNC/DESphotonicfilm.The results showedthat theamountofDESaddedwasacrucialparameterforregulatingthestructuralcolor，mechanicalproperties，thermalstabilityandesponsiecaracteristicsofphotonicfis.eitroductionofDEectivelyaddressedthedefectofisufet flexibility in photonic films，increasing the elongation at break to （0.74±0.18）% . The film exhibited a wide color gamut （gradually transitioning from blue to orange-red） and enhanced thermal stability. The CNC/DES0.5 photonic film（the addition amount of DES was （20 0.5% ）demonstrated excellnt humidity-responsive characteristics，as the realitive humidity increased from 50% to 99 % ，the film changedfromelowgreentod，whilealsoexhibitinggoodreversiblehumidityperformance（over2Ocycles）.Aditionaly，efilm displayedsensitiveidentificationoftraceamountsofwaterinethanolwatermixtures，graduallchangingfromredtoyelowgreenas the water content decreased. Leveraging the responsive characteristics of CNC to H2O molecules，photonic filmsexhibited reversible behavior in humidity sensing and moisture detection. Key words： cellulose nanocrystals；photonic structure color；deep eutectic solvents；reversiblehumidityperformance

光子晶体在功能材料领域展现出巨大应用潜力，其中基于光子晶体构筑结构色材料已成为研究热点。（剩余12646字）