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Applications of unconventional proce...

Wang, Ruolei.

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Applications of unconventional processes in polymer synthesis: Supercritical fluids and sonochemistry.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Applications of unconventional processes in polymer synthesis: Supercritical fluids and sonochemistry./
作者:	Wang, Ruolei.
面頁冊數:	161 p.
附註:	Source: Dissertation Abstracts International, Volume: 66-08, Section: B, page: 4365.
Contained By:	Dissertation Abstracts International66-08B.
標題:	Engineering, Chemical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3184566
ISBN:	9780542259562

Applications of unconventional processes in polymer synthesis: Supercritical fluids and sonochemistry.
Wang, Ruolei.

Applications of unconventional processes in polymer synthesis: Supercritical fluids and sonochemistry. - 161 p.

Source: Dissertation Abstracts International, Volume: 66-08, Section: B, page: 4365.

Thesis (Ph.D.)--The University of Akron, 2005.

The polymer industry has become one of the fastest growing areas in the materials industry for several decades, and would be continue to do so in the foreseeable future. However, due to growing environmental and health concern, the polymer manufacturers have faced increasing pressure to apply environmentally benign technologies in order to accommodate tightened environmental regulations. In the process of searching for clean and low emission polymerization techniques, supercritical fluid technology and sonochemistry have attracted more and more interest because of their unique advantages over conventional techniques.

ISBN: 9780542259562Subjects--Topical Terms:

1018531
Engineering, Chemical.

Applications of unconventional processes in polymer synthesis: Supercritical fluids and sonochemistry.
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245 1 0 $a Applications of unconventional processes in polymer synthesis: Supercritical fluids and sonochemistry.
300 $a 161 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-08, Section: B, page: 4365.
500 $a Adviser: H. M. Cheung.
502 $a Thesis (Ph.D.)--The University of Akron, 2005.
520 $a The polymer industry has become one of the fastest growing areas in the materials industry for several decades, and would be continue to do so in the foreseeable future. However, due to growing environmental and health concern, the polymer manufacturers have faced increasing pressure to apply environmentally benign technologies in order to accommodate tightened environmental regulations. In the process of searching for clean and low emission polymerization techniques, supercritical fluid technology and sonochemistry have attracted more and more interest because of their unique advantages over conventional techniques.
520 $a The present study is to expand our knowledge of polymer synthesis processes involving supercritical fluid, sonochemistry and microemulsion technologies. This study included three affiliated projects as supercritical dispersion polymerization, ultrasonically initiated polymerization in near-critical environment and ultrasound assisted microemulsion polymerization in aqueous solution. The success of projects will significantly broaden the application potential for these advanced chemical processes in both conventional and unconventional systems.
520 $a In the study of dispersion polymerization in scCO2, a new PDMS macromonomer has been successfully applied as surfactant to stabilize the polymerization process. The polymerization results indicated that the conversion is increasing with the increasing of stabilizer concentration, and the particle morphology become more uniform at the same time. In the study of ultrasound irradiation in high-pressure medium, it has been confirmed that sonication alone could initiate the polymerization process. The monomer: CO 2 ratio and ultrasound irradiation time appeared to have impact on the molecular weight and its distribution of the polymeric products. Discrete morphology from SEM image suggested that the polymer particles could be stabilized without surfactant during the polymerization process.
520 $a In the study of ultrasound assisted microemulsion polymerization, ultrasound irradiation has been proved crucial to achieve a stable microemulsion polymerization. The kinetics study suggested that sonication could facilitate the polymerization dramatically. The ultrasound irradiation has also been proved to be an effective approach to control the particle size and its distribution of resultant polymer solution.
590 $a School code: 0003.
650 4 $a Engineering, Chemical. $3 1018531
650 4 $a Chemistry, Polymer. $3 1018428
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710 2 0 $a The University of Akron. $3 1018399
773 0 $t Dissertation Abstracts International $g 66-08B.
790 1 0 $a Cheung, H. M., $e advisor
790 $a 0003
791 $a Ph.D.
792 $a 2005
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