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Investigating the Effect of Plasma a...

Cortes, Aaren Scott.

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Investigating the Effect of Plasma and Solvent Treatments on Ammonium Perchlorate Wettability and Interfacial Chemistry.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Investigating the Effect of Plasma and Solvent Treatments on Ammonium Perchlorate Wettability and Interfacial Chemistry./
Author:	Cortes, Aaren Scott.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2023,
Description:	103 p.
Notes:	Source: Masters Abstracts International, Volume: 85-05.
Contained By:	Masters Abstracts International85-05.
Subject:	Aerospace engineering. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30316692
ISBN:	9798380849418

Investigating the Effect of Plasma and Solvent Treatments on Ammonium Perchlorate Wettability and Interfacial Chemistry.
Cortes, Aaren Scott.

Investigating the Effect of Plasma and Solvent Treatments on Ammonium Perchlorate Wettability and Interfacial Chemistry. - Ann Arbor : ProQuest Dissertations & Theses, 2023 - 103 p.

Source: Masters Abstracts International, Volume: 85-05.

Thesis (M.S.)--California State University, Long Beach, 2023.

This item must not be sold to any third party vendors.

Ammonium perchlorate (AP) and hydroxyl-terminated polybutadiene (HTPB) have been used as solid rocket propellant ingredients for over 70 years. A wide range of research has not been conducted on the interfacial chemistry of the two materials. Understanding the surface chemistry of HTPB on AP allows for increased control of the mechanical properties of the composite propellant. Understanding how to alter the surface of AP was the baseline of this study. Sessile droplet experiments were used to understand the wettability of ammonium perchlorate. Droplets were placed on AP pressed pellets, AP single crystals, plasma-treated AP single crystals, and AP single crystals that were treated in distilled water, methanol, toluene, hexanes, ethyl methyl ketone, ethyl acetate, n-dodecane, ethylene glycol, and various Tepanol® and water solutions. Treated samples were necessary to determine the adjustability of ammonium perchlorate's surface chemistry. Solvents used for treatment were selected based on vapor pressure, solubility, polarity, and interaction with AP. A high-speed camera was used to collect images of the droplets, images were then analyzed using ImageJ software. Contact angles were found and analyzed for each sample. Comparison of AP single crystals and AP pressed pellets allowed for a baseline understanding of the surfaces. The difference in wetting indicated the influence of Cassie state versus Wenzel state. Additionally, surface characterization experiments were conducted to understand the changes the surfaces underwent when treated in solvents or plasma treated. The experiments were conducted using a nanoindenter, scanning electron microscope, Fourier transform infrared spectroscopy, and x-ray photoelectron spectroscopy. Results indicate that solvents and plasma treatment could influence the surface chemistry of AP. Data from the experiment provided insight into the physical and chemical changes that occurred.

ISBN: 9798380849418Subjects--Topical Terms:

1002622
Aerospace engineering.
Subjects--Index Terms:

Ammonium perchlorate

Investigating the Effect of Plasma and Solvent Treatments on Ammonium Perchlorate Wettability and Interfacial Chemistry.
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100 1 $a Cortes, Aaren Scott. $3 3766932
245 1 0 $a Investigating the Effect of Plasma and Solvent Treatments on Ammonium Perchlorate Wettability and Interfacial Chemistry.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2023
300 $a 103 p.
500 $a Source: Masters Abstracts International, Volume: 85-05.
500 $a Advisor: Kalman, Joseph.
502 $a Thesis (M.S.)--California State University, Long Beach, 2023.
506 $a This item must not be sold to any third party vendors.
520 $a Ammonium perchlorate (AP) and hydroxyl-terminated polybutadiene (HTPB) have been used as solid rocket propellant ingredients for over 70 years. A wide range of research has not been conducted on the interfacial chemistry of the two materials. Understanding the surface chemistry of HTPB on AP allows for increased control of the mechanical properties of the composite propellant. Understanding how to alter the surface of AP was the baseline of this study. Sessile droplet experiments were used to understand the wettability of ammonium perchlorate. Droplets were placed on AP pressed pellets, AP single crystals, plasma-treated AP single crystals, and AP single crystals that were treated in distilled water, methanol, toluene, hexanes, ethyl methyl ketone, ethyl acetate, n-dodecane, ethylene glycol, and various Tepanol® and water solutions. Treated samples were necessary to determine the adjustability of ammonium perchlorate's surface chemistry. Solvents used for treatment were selected based on vapor pressure, solubility, polarity, and interaction with AP. A high-speed camera was used to collect images of the droplets, images were then analyzed using ImageJ software. Contact angles were found and analyzed for each sample. Comparison of AP single crystals and AP pressed pellets allowed for a baseline understanding of the surfaces. The difference in wetting indicated the influence of Cassie state versus Wenzel state. Additionally, surface characterization experiments were conducted to understand the changes the surfaces underwent when treated in solvents or plasma treated. The experiments were conducted using a nanoindenter, scanning electron microscope, Fourier transform infrared spectroscopy, and x-ray photoelectron spectroscopy. Results indicate that solvents and plasma treatment could influence the surface chemistry of AP. Data from the experiment provided insight into the physical and chemical changes that occurred.
590 $a School code: 6080.
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650 4 $a Physical chemistry. $3 1981412
650 4 $a Analytical chemistry. $3 3168300
650 4 $a Organic chemistry. $3 523952
653 $a Ammonium perchlorate
653 $a Interfacial chemistry
653 $a Plasma
653 $a Treatment
653 $a Wettability
653 $a Hydroxyl-terminated polybutadiene
690 $a 0538
690 $a 0486
690 $a 0490
690 $a 0494
710 2 $a California State University, Long Beach. $b Mechanical and Aerospace Engineering. $3 3184783
773 0 $t Masters Abstracts International $g 85-05.
790 $a 6080
791 $a M.S.
792 $a 2023
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30316692