東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Environmentally Responsive Hydrogels...

Chatterjee, Prithwish.

Linked to FindBook

Google Book

Amazon

博客來

Environmentally Responsive Hydrogels: Development and Integration with Hard Materials.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Environmentally Responsive Hydrogels: Development and Integration with Hard Materials./
Author:	Chatterjee, Prithwish.
Description:	170 p.
Notes:	Source: Dissertation Abstracts International, Volume: 77-04(E), Section: B.
Contained By:	Dissertation Abstracts International77-04B(E).
Subject:	Chemical engineering. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3735190
ISBN:	9781339240039

Environmentally Responsive Hydrogels: Development and Integration with Hard Materials.
Chatterjee, Prithwish.

Environmentally Responsive Hydrogels: Development and Integration with Hard Materials. - 170 p.

Source: Dissertation Abstracts International, Volume: 77-04(E), Section: B.

Thesis (Ph.D.)--Arizona State University, 2015.

Environmentally responsive hydrogels are one interesting class of soft materials. Due to their remarkable responsiveness to stimuli such as temperature, pH, or light, they have attracted widespread attention in many fields. However, certain functionality of these materials alone is often limited in comparison to other materials such as silicon; thus, there is a need to integrate soft and hard materials for the advancement of environmentally responsive materials.

ISBN: 9781339240039Subjects--Topical Terms:

560457
Chemical engineering.

Environmentally Responsive Hydrogels: Development and Integration with Hard Materials.
LDR:03532nmm a2200325 4500 001 2067524
005 20160411144745.5
008 170521s2015 ||||||||||||||||| ||eng d
020 $a 9781339240039
035 $a (MiAaPQ)AAI3735190
035 $a AAI3735190
040 $a MiAaPQ $c MiAaPQ
100 1 $a Chatterjee, Prithwish. $3 3182375
245 1 0 $a Environmentally Responsive Hydrogels: Development and Integration with Hard Materials.
300 $a 170 p.
500 $a Source: Dissertation Abstracts International, Volume: 77-04(E), Section: B.
500 $a Advisers: Lenore L. Dai; Hanqing Jiang.
502 $a Thesis (Ph.D.)--Arizona State University, 2015.
520 $a Environmentally responsive hydrogels are one interesting class of soft materials. Due to their remarkable responsiveness to stimuli such as temperature, pH, or light, they have attracted widespread attention in many fields. However, certain functionality of these materials alone is often limited in comparison to other materials such as silicon; thus, there is a need to integrate soft and hard materials for the advancement of environmentally responsive materials.
520 $a Conventional hydrogels lack good mechanical properties and have inherently slow response time, important characteristics which must be improved before the hydrogels can be integrated with silicon. In the present dissertation work, both these important attributes of a temperature responsive hydrogel, poly(N-isopropylacrylamide) (PNIPAAm), were improved by adopting a low temperature polymerization process and adding a silicate compound, tetramethyl orthosilicate. Furthermore, the transition temperature was modulated by adjusting the media quality in which the hydrogels were equilibrated, e.g. by adding a co-solvent (methanol) or an anionic surfactant (sodium dodecyl sulfate). Interestingly, the results revealed that, based on the hydrogels' porosity, there were appreciable differences when the PNIPAAm hydrogels interacted with the media molecules.
520 $a Next, an adhesion mechanism was developed in order to transfer silicon thin film onto the hydrogel surface. This integration provided a means of mechanical buckling of the thin silicon film due to changes in environmental stimuli (e.g., temperature, pH). We also investigated how novel transfer printing techniques could be used to generate patterned deformation of silicon thin film when integrated on a planar hydrogel substrate. Furthermore, we explore multilayer hybrid hydrogel structures formed by the integration of different types of hydrogels that have tunable curvatures under the influence of different stimuli. Silicon thin film integration on such tunable curvature substrates reveal characteristic reversible buckling of the thin film in the presence of multiple stimuli.
520 $a Finally, different approaches of incorporating visible light response in PNIPAAm are discussed. Specifically, a chemical chromophore- spirobenzopyran was synthesized and integrated through chemical cross-linking into the PNIPAAm hydrogels. Further, methods of improving the light response and mechanical properties were also demonstrated. Interestingly, such a system was shown to have potential application as light modulated topography altering system.
590 $a School code: 0010.
650 4 $a Chemical engineering. $3 560457
650 4 $a Materials science. $3 543314
650 4 $a Polymer chemistry. $3 3173488
690 $a 0542
690 $a 0794
690 $a 0495
710 2 $a Arizona State University. $b Chemical Engineering. $3 1682515
773 0 $t Dissertation Abstracts International $g 77-04B(E).
790 $a 0010
791 $a Ph.D.
792 $a 2015
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3735190