Water-dispersible and stable polydopamine coated cellulose nanocrystal-MXene composites for high transparent, adhesive and conductive hydrogels

被引：79

作者：

Wan, Bolin ^{[1
,2
,3
]}

Liu, Nana ^{[1
,2
,3
]}

Zhang, Zhen ^{[1
,2
,3
]}

Fang, Xiong ^{[1
,2
,3
]}

Ding, Yugao ^{[1
,2
,3
]}

Xiang, Haosheng ^{[1
,2
,3
]}

He, Yunqing ^{[4
]}

Liu, Mingxian ^{[4
]}

Lin, Xiaoming ^{[1
,2
,3
]}

Tang, Juntao ^{[5
]}

Li, Yingzhan ^{[6
]}

Tang, Biao ^{[2
,3
]}

Zhou, Guofu ^{[1
,2
,3
]}

机构：

[1] South China Normal Univ, Natl Ctr Int Res Green Optoelect, SCNU TUE Joint Lab Device Integrated Respons Mat D, Guangzhou 510006, Peoples R China

[2] South China Normal Univ, South China Acad Adv Optoelect, Guangdong Prov Key Lab Opt Informat Mat & Technol, Guangzhou 510006, Peoples R China

[3] South China Normal Univ, Inst Elect Paper Displays, South China Acad Adv Optoelect, Guangzhou 510006, Peoples R China

[4] Jinan Univ, Coll Chem & Mat Sci, Dept Mat Sci & Engn, Guangzhou 511443, Peoples R China

[5] Cent South Univ, Coll Chem & Chem Engn, Hunan Key Lab Micro & Nano Mat Interface Sci, Changsha 410083, Peoples R China

[6] Zhejiang Sci Tech Univ, Key Lab Adv Text Mat & Mfg Technol, Minist Educ, Hangzhou 310018, Peoples R China

来源：

CARBOHYDRATE POLYMERS | 2023年 / 314卷

基金：

中国国家自然科学基金;

关键词：

MXene; Cellulose nanocrystals; Polydopamine; Transparent conductive hydrogel; Adhesion; PERFORMANCE; FABRICATION; MEMBRANE;

D O I：

10.1016/j.carbpol.2023.120929

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

High conductive and transparent hydrogels with adhesion function are ideal candidates for soft electronic de-vices. However, it remains a challenge to design appropriate conductive nanofillers to endow hydrogels with all these characteristics. The 2D MXene sheets are promising conductive nanofillers for hydrogels due to excellent electricity and water-dispersibility. However, MXene is quite susceptible to oxidation. In this study, polydop-amine (PDA) was employed to protect the MXene from oxidation and meanwhile endow hydrogels with adhe-sion. However, PDA coated MXene (PDA@MXene) were easily flocculated from dispersion. 1D cellulose nanocrystals (CNCs) were employed as steric stabilizers to prevent the agglomeration of MXene during the self -polymerization of dopamine. The obtained PDA coated CNC-MXene (PCM) sheets display outstanding water -dispersible and anti-oxidation stability and are promising conductive nanofillers for hydrogels. During the fabrication of polyacrylamide hydrogels, the PCM sheets were partially degraded into PCM nanoflakes with smaller size, leading to transparent PCM-PAM hydrogels. The PCM-PAM hydrogels can self-adhere to skin, and possess high transmittance of 75 % at 660 nm, superior electric conductivity of 4.7 S/m with MXene content as low as 0.1 % and excellent sensitivity. This study will facilitate the development of MXene based stable, water -dispersible conductive nanofillers and multi-functional hydrogels.

引用

页数：11

共 68 条

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