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Strong and Stretchable Gels for Elec...

Kokilepersaud, Uma Joy.

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Strong and Stretchable Gels for Electroadhesion.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Strong and Stretchable Gels for Electroadhesion./
作者:	Kokilepersaud, Uma Joy.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2022,
面頁冊數:	48 p.
附註:	Source: Masters Abstracts International, Volume: 84-04.
Contained By:	Masters Abstracts International84-04.
標題:	Chemical engineering. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29325059
ISBN:	9798351469546

Strong and Stretchable Gels for Electroadhesion.
Kokilepersaud, Uma Joy.

Strong and Stretchable Gels for Electroadhesion. - Ann Arbor : ProQuest Dissertations & Theses, 2022 - 48 p.

Source: Masters Abstracts International, Volume: 84-04.

Thesis (M.S.)--University of Maryland, College Park, 2022.

Electroadhesion (EA) was first shown between cationic and anionic gels: when the two are contacted under an electric field (10 V DC, for ~ 20 s), they adhere strongly and remain adhered after the field is removed. Recently, our lab demonstrated that EA can also be induced between a cationic gel and animal tissues. This suggests the intriguing possibility of using EA in surgery: i.e., for gels to be electroadhered over tears in tissues. However, current gels fail to properly seal tissue-tears because either they are not strong enough (they break when stretched over the torn tissue) or do not adhere well enough to the tissue. This project aims to create a cationic gel that is strong (i.e., has high elongation-at-break ε and tensile strength TS) and exhibits strong adhesion to tissue by EA (i.e., has high pull-off strength). Our base gel, made by polymerizing an acrylamide monomer (termed 'QDM'), is fortified by a second polymer. The optimal second polymer is shown to be gelatin, which forms physical gels upon cooling from a hot solution. QDM/gelatin gels are interpenetrating networks (IPNs) and exhibit ~ 20-30X higher ε and TS compared to QDM alone. We proceed to test if our strong gels can seal tears in chicken intestines. A tear in the tube is patched by the QDM/gelatin gel using EA, and water is then sent through the patched tube. Even for large tears (~ 3-4 mm width), the patched tube allows water to flow at a pressure exceeding 80 mm Hg (normal fluid pressure in the body). This suggests that EA could indeed be implemented in surgery using our strong QDM/gelatin gels.

ISBN: 9798351469546Subjects--Topical Terms:

560457
Chemical engineering.
Subjects--Index Terms:

Cationic gel

Strong and Stretchable Gels for Electroadhesion.
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100 1 $a Kokilepersaud, Uma Joy. $3 3771324
245 1 0 $a Strong and Stretchable Gels for Electroadhesion.
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300 $a 48 p.
500 $a Source: Masters Abstracts International, Volume: 84-04.
500 $a Advisor: Raghavan, Srinivasa R.
502 $a Thesis (M.S.)--University of Maryland, College Park, 2022.
520 $a Electroadhesion (EA) was first shown between cationic and anionic gels: when the two are contacted under an electric field (10 V DC, for ~ 20 s), they adhere strongly and remain adhered after the field is removed. Recently, our lab demonstrated that EA can also be induced between a cationic gel and animal tissues. This suggests the intriguing possibility of using EA in surgery: i.e., for gels to be electroadhered over tears in tissues. However, current gels fail to properly seal tissue-tears because either they are not strong enough (they break when stretched over the torn tissue) or do not adhere well enough to the tissue. This project aims to create a cationic gel that is strong (i.e., has high elongation-at-break ε and tensile strength TS) and exhibits strong adhesion to tissue by EA (i.e., has high pull-off strength). Our base gel, made by polymerizing an acrylamide monomer (termed 'QDM'), is fortified by a second polymer. The optimal second polymer is shown to be gelatin, which forms physical gels upon cooling from a hot solution. QDM/gelatin gels are interpenetrating networks (IPNs) and exhibit ~ 20-30X higher ε and TS compared to QDM alone. We proceed to test if our strong gels can seal tears in chicken intestines. A tear in the tube is patched by the QDM/gelatin gel using EA, and water is then sent through the patched tube. Even for large tears (~ 3-4 mm width), the patched tube allows water to flow at a pressure exceeding 80 mm Hg (normal fluid pressure in the body). This suggests that EA could indeed be implemented in surgery using our strong QDM/gelatin gels.
590 $a School code: 0117.
650 4 $a Chemical engineering. $3 560457
650 4 $a Electrical engineering. $3 649834
650 4 $a Mechanical engineering. $3 649730
650 4 $a Biomedical engineering. $3 535387
650 4 $a Histology. $3 641250
653 $a Cationic gel
653 $a Electroadhesion
653 $a Animal tissue
690 $a 0542
690 $a 0544
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690 $a 0414
710 2 $a University of Maryland, College Park. $b Chemical Engineering. $3 1036299
773 0 $t Masters Abstracts International $g 84-04.
790 $a 0117
791 $a M.S.
792 $a 2022
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29325059