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SOLUTION BEHAVIOR OF STIFF CHAIN POL...

RUSSO, PAUL STEPHEN.

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SOLUTION BEHAVIOR OF STIFF CHAIN POLYMERS.

Record Type:	Electronic resources : Monograph/item
Title/Author:	SOLUTION BEHAVIOR OF STIFF CHAIN POLYMERS./
Author:	RUSSO, PAUL STEPHEN.
Description:	462 p.
Notes:	Source: Dissertation Abstracts International, Volume: 42-12, Section: B, page: 4820.
Contained By:	Dissertation Abstracts International42-12B.
Subject:	Chemistry, Polymer. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8211538

SOLUTION BEHAVIOR OF STIFF CHAIN POLYMERS.
RUSSO, PAUL STEPHEN.

SOLUTION BEHAVIOR OF STIFF CHAIN POLYMERS. - 462 p.

Source: Dissertation Abstracts International, Volume: 42-12, Section: B, page: 4820.

Thesis (Ph.D.)--University of Minnesota, 1981.

While most polymers behave as loose "random coils" in solution, a number of macromolecules have been synthesized that behave as rigid rods. When dissolved, these inflexible, asymmetric particles can display a liquid crystalline morphology not available to random coil polymers. The liquid crystalline state of Poly-(gamma)-benzyl-L-glutamate (PBLG) is studied by a variety of techniques, including small angle X-ray scattering (SAXS), small angle light scattering (SALS), differential scanning calorimetry, and optical microscopy. Special attention is paid to the relationship between morphology and phase behavior.Subjects--Topical Terms:

1018428
Chemistry, Polymer.

SOLUTION BEHAVIOR OF STIFF CHAIN POLYMERS.
LDR:02239nmm 2200265 4500 001 1839236
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008 130614s1981 d
035 $a (UnM)AAI8211538
035 $a AAI8211538
040 $a UnM $c UnM
100 1 $a RUSSO, PAUL STEPHEN. $3 1927634
245 1 0 $a SOLUTION BEHAVIOR OF STIFF CHAIN POLYMERS.
300 $a 462 p.
500 $a Source: Dissertation Abstracts International, Volume: 42-12, Section: B, page: 4820.
502 $a Thesis (Ph.D.)--University of Minnesota, 1981.
520 $a While most polymers behave as loose "random coils" in solution, a number of macromolecules have been synthesized that behave as rigid rods. When dissolved, these inflexible, asymmetric particles can display a liquid crystalline morphology not available to random coil polymers. The liquid crystalline state of Poly-(gamma)-benzyl-L-glutamate (PBLG) is studied by a variety of techniques, including small angle X-ray scattering (SAXS), small angle light scattering (SALS), differential scanning calorimetry, and optical microscopy. Special attention is paid to the relationship between morphology and phase behavior.
520 $a A second morphology available to solutions of rigid rod polymers is that of a gel. Gelation occurs upon phase separation, for example when cooling the solution. The gel structure appears to be related to the kinetic mechanism of phase separation. Gel structure and the gelation process are studied by SALS and SAXS. An instrument for measurement of scattered light at very low angles is described.
520 $a The rigidity of PBLG traces to its (alpha)-helical conformation. The result of defects in the (alpha)-helix is simulated by computer calculation.
520 $a In an unrelated study, the phyical solution characteristics of the Dutch Elm toxin Cerato ulmin are considered. It is found that this substance is highly surface active and effectively insoluble in water. A killing mechanism is suggested, which relies on the physical solution characteristics of the toxin alone.
590 $a School code: 0130.
650 4 $a Chemistry, Polymer. $3 1018428
690 $a 0495
710 2 0 $a University of Minnesota. $3 676231
773 0 $t Dissertation Abstracts International $g 42-12B.
790 $a 0130
791 $a Ph.D.
792 $a 1981
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8211538