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通过聚乙烯吡咯烷酮和链烷醇胺在水中改性的高度均匀且稳定的单壁碳纳米管分散液。

Highly homogeneous and stable single-walled carbon nanotubes dispersion modified by polyvinylpyrrolidone and alkanolamine in water.

作者信息

Li Minghua, Yu Shujun, Fang Xiting, Du Zhiqiang, Ge Xiaojin

机构信息

School of Energy Materials and Chemical Engineering, Hefei University Hefei Anhui 230601 China

Anhui Provincial Engineering Research Center for Green Coatings High-performance Additives Hefei Anhui 230601 China.

出版信息

RSC Adv. 2024 Apr 22;14(18):12947-12953. doi: 10.1039/d4ra01614a. eCollection 2024 Apr 16.

DOI:10.1039/d4ra01614a
PMID:38650682
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11033829/
Abstract

A novel noncovalent surface modification of commercial single-walled carbon nanotubes (SWCNTs) was successfully carried out by using ball grinding technology between SWCNTs and mixed dispersants (polyvinylpyrrolidone (PVP) and alkanolamine), affording a highly homogeneous and stable PA-SWCNTs dispersion in water. The homogeneous dispersibility and long storage stability were systematically investigated by transmittance spectroscopy, absorption spectroscopy, zeta potential analyzer, sedimentation photo and transmittance electron microscopy. Under the optimized conditions, the PA-SWCNTs dispersion modified with 0.7 wt% PVP and 0.25 wt% alkanolamine under the condition of total 6 h ball grinding time using paint shaker can be easily well-dispersed in water and has good storage stability, and no sedimentation is observed more than one month. From an industrial perspective, this method is green and easy to operate in industry.

摘要

通过在商业单壁碳纳米管（SWCNTs）与混合分散剂（聚乙烯吡咯烷酮（PVP）和链烷醇胺）之间使用球磨技术，成功实现了对商业单壁碳纳米管的一种新型非共价表面改性，从而在水中获得了高度均匀且稳定的PA-SWCNTs分散体。通过透射光谱、吸收光谱、zeta电位分析仪、沉降照片和透射电子显微镜系统地研究了其均匀分散性和长期储存稳定性。在优化条件下，使用油漆振荡器在总共6小时的球磨时间条件下，用0.7 wt% PVP和0.25 wt%链烷醇胺改性的PA-SWCNTs分散体能够轻松地在水中良好分散，并且具有良好的储存稳定性，在一个多月的时间内未观察到沉降现象。从工业角度来看，该方法绿色且易于在工业中操作。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4815/11033829/d594d7a9268d/d4ra01614a-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4815/11033829/17d6a99aae39/d4ra01614a-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4815/11033829/261836ab2e15/d4ra01614a-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4815/11033829/214371e641b0/d4ra01614a-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4815/11033829/2442c127fa81/d4ra01614a-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4815/11033829/70a332672d17/d4ra01614a-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4815/11033829/a48881246ce5/d4ra01614a-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4815/11033829/d594d7a9268d/d4ra01614a-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4815/11033829/17d6a99aae39/d4ra01614a-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4815/11033829/261836ab2e15/d4ra01614a-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4815/11033829/214371e641b0/d4ra01614a-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4815/11033829/2442c127fa81/d4ra01614a-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4815/11033829/70a332672d17/d4ra01614a-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4815/11033829/a48881246ce5/d4ra01614a-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4815/11033829/d594d7a9268d/d4ra01614a-f7.jpg

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本文引用的文献

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Development of Quality Control Methods for Dispersibility and Stability of Single-Wall Carbon Nanotubes in an Aqueous Medium.单壁碳纳米管在水介质中的分散性和稳定性质量控制方法的开发
Nanomaterials (Basel). 2021 Oct 5;11(10):2618. doi: 10.3390/nano11102618.
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Tannic acid modified graphene/CNT three-dimensional conductive network for preparing high-performance transparent flexible heaters.
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