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A smart material from oligomers and ...

Kim, Seog-Jun.

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A smart material from oligomers and polymers.

Record Type:	Electronic resources : Monograph/item
Title/Author:	A smart material from oligomers and polymers./
Author:	Kim, Seog-Jun.
Description:	241 p.
Notes:	Source: Dissertation Abstracts International, Volume: 54-02, Section: B, page: 1071.
Contained By:	Dissertation Abstracts International54-02B.
Subject:	Plastics Technology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9319698

A smart material from oligomers and polymers.
Kim, Seog-Jun.

A smart material from oligomers and polymers. - 241 p.

Source: Dissertation Abstracts International, Volume: 54-02, Section: B, page: 1071.

Thesis (Ph.D.)--The University of Akron, 1993.

A smart material, which changed its optical absorption spectrum irreversibly when stretched, was designed, synthesized, and characterized. This smart material was a segmented polyurethane elastomer containing a copolyamide in the soft segments. Copolyamides, which were synthesized from two diamines Subjects--Topical Terms:

1023683
Plastics Technology.

A smart material from oligomers and polymers.
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008 130614s1993 eng d
035 $a (UnM)AAI9319698
035 $a AAI9319698
040 $a UnM $c UnM
100 1 $a Kim, Seog-Jun. $3 1932925
245 1 2 $a A smart material from oligomers and polymers.
300 $a 241 p.
500 $a Source: Dissertation Abstracts International, Volume: 54-02, Section: B, page: 1071.
502 $a Thesis (Ph.D.)--The University of Akron, 1993.
520 $a A smart material, which changed its optical absorption spectrum irreversibly when stretched, was designed, synthesized, and characterized. This smart material was a segmented polyurethane elastomer containing a copolyamide in the soft segments. Copolyamides, which were synthesized from two diamines $( p,p\sp\prime $- diaminoazobenzene and 1,6-hexanediamine) and two dichlorides (succinyl chloride and glutaryl dichloride), contained three modules: attachments, azobenzene chromophores, and conformational latches. Almost all of the azobenzene groups in a copolyamide were latched in the cis-form by irradiating the glycerine solution of this copolyamide with UV light $( \lambda\sb{\rm max} $ = 365 nm) at 160 $\ sp\circ $( \lambda\sb{\rm max} $ = 365 nm) at 100 $\ sp\circ $\ lambda $ = 380 nm. Three successive 300% stretching and relaxation cycles changed almost all the photoproduced cis-form to the trans-form. Non-linear mechanochromism was demonstrated with the polyurethane copolymer film.
520 $a Because of the commercial interest in carbon fiber reinforced composites and in carbon black reinforced rubbers, the surfaces of carbon fiber and carbon blacks were examined with a scanning tunneling microscope (STM). With the possible exception of graphitized carbon black, these surfaces were too irregular to observe a single adsorbed molecule. Octadecyl amine molecules physically adsorbed to the surface of highly oriented pyrolytic graphite (HOPG) were observed by the STM. The surface of HOPG chemically treated with RuO $\ sb2 $/ NaIO $\ sb4 $ and thionyl chloride was used to observe the attachment of polymers to a surface similar in composition of carbon fiber and carbon blacks. Copolyamide materials adsorbed to a step edge of chemically modified HOPG were observed by the STM and the atomic force microscope (AFM).
590 $a School code: 0003.
650 4 $a Plastics Technology. $3 1023683
650 4 $a Engineering, Materials Science. $3 1017759
650 4 $a Textile Technology. $3 1020710
650 4 $a Chemistry, Polymer. $3 1018428
690 $a 0795
690 $a 0794
690 $a 0994
690 $a 0495
710 2 0 $a The University of Akron. $3 1018399
773 0 $t Dissertation Abstracts International $g 54-02B.
790 $a 0003
791 $a Ph.D.
792 $a 1993
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9319698