Facile Incorporation of Optical Sensitizers into Nitrocellulose Aerogels for Improved Laser Ignition and Combustion

Author:

Yan Juchao1,Zhang Xin2,Baghi Roya2,Weeks Brandon L.3,Hope-Weeks Louisa3

Affiliation:

1. Eastern New Mexico University

2. Texas Tech University

3. University of Nevada-Reno

Abstract

Abstract We demonstrate a straightforward and effective method to achieve uniform infiltration of optical sensitizers into nitrocellulose aerogels using a sol-gel method followed by supercritical carbon dioxide drying. The optical sensitizers employed in this study include gold nanoparticles (AuNPs) capped with self-assembled monolayers of hydroxyl and/or carboxylic functional groups (i.e., OH-AuNPs and COOH-AuNPs) as well as carboxylated multi-walled carbon nanotubes (c-MWCNTs). The resulting robust, monolithic aerogels were characterized in detail by using scanning electron microscopy (SEM), specific surface area measurements, differential scanning colorimetry (DSC), and laser initiation and combustion. Although the composite aerogels exhibited similar surface areas, morphologies, and microstructures as pure nitrocellulose aerogels, they exhibited increased sensitivity to laser stimuli and demonstrated improved combustion properties compared to pure nitrocellulose aerogels. We attribute these enhanced performances to the possible increase in photothermal conversion and thermal conductivity facilitated by the incorporation of optical sensitizers within the aerogels. This study offers valuable insights into the design and development of advanced nitrocellulose-based energetic materials, potentially leading to advancements in laser initiation and combustion technologies.

Publisher

Research Square Platform LLC

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3