当前位置: X-MOL 学术Langmuir › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Improving Thin-Film Properties of Poly(vinyl alcohol) by the Addition of Low-Weight Percentages of Cellulose Nanocrystals
Langmuir ( IF 3.9 ) Pub Date : 2020-03-24 , DOI: 10.1021/acs.langmuir.0c00068
Mathieu N. Tousignant 1 , Nicole A. Rice 1 , Alexander Peltekoff 1 , Chithiravel Sundaresan 1, 2 , Chuanwei Miao 3 , Wadood Y. Hamad 3 , Benoît H. Lessard 1
Affiliation  

The increased demand for electronic devices, combined with a desire to minimize the environmental impact, necessitates the development of new eco-friendly materials. One promising approach is the incorporation of renewable and green materials that possess the desired mechanical and electrical properties while allowing for more ecologically friendly disposal of these devices. The addition of low-weight percentages (0.25–0.75 wt %) of cellulose nanocrystals (CNCs) was investigated as an environmentally friendly additive in aqueous dispersions of poly(vinyl alcohol) (PVA). It was found that these low CNC loadings were sufficient to induce a favorable increase in viscosity, which in turn dramatically enhanced the film quality of the PVA blends through an improvement in the critical radius of the spun film, overall film thickness, and homogeneity of the thin film. This corresponded to an increase in the number of functioning organic electronic devices that could be fabricated by spin coating, including metal–insulator–metal (MIM) capacitors and organic thin-film transistors (OTFTs). Most importantly, the incorporation of CNCs into PVA did not significantly alter the native dielectric properties of the polymer thin films when incorporated into both MIM capacitors and OTFTs.

中文翻译:

通过添加低重量百分比的纤维素纳米晶体改善聚乙烯醇的薄膜性能

对电子设备的需求增加以及对环境影响最小化的需求使得必须开发新的环保材料。一种有前途的方法是将具有所需机械和电气特性的可再生和绿色材料结合在一起,同时允许对这些设备进行更生态友好的处理。研究了添加低重量百分比(0.25-0.75 wt%)的纤维素纳米晶体(CNC)作为对聚乙烯醇(PVA)的水分散体的环保添加剂。人们发现,这些低的CNC负载量足以引起粘度的有利增加,进而通过改善纺膜的临界半径,总膜厚,和薄膜的均匀性。这对应于可以通过旋涂制造的功能性有机电子设备数量的增加,包括金属-绝缘体-金属(MIM)电容器和有机薄膜晶体管(OTFT)。最重要的是,将CNC并入PVA并不会同时改变聚合物薄膜与MIM电容器和OTFT的固有介电性能。
更新日期:2020-03-24
down
wechat
bug