2011
DOI: 10.1134/s1560090411050083
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Morpholine-substituted soluble polyimides

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Cited by 4 publications
(4 citation statements)
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“…With the use of traditional synthetic approaches, a number of PIs carrying such groups (fragments) as halogen, hydroxyl, carboxyl, morpholine, chalcone, and hexaoxy groups were synthesized and character ized [40][41][42][43][44][45][46][47][48][49][50][51][52]. The incorporation of fluorine atoms into PI macromolecules ensures improved solubility of the polymers in diverse organic solvents, while their good thermal and mechanical characteristics are pre served, and provides decreases in gas permeability and colorability of the films [40][41][42].…”
Section: Polyimides and Polyamidesmentioning
confidence: 99%
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“…With the use of traditional synthetic approaches, a number of PIs carrying such groups (fragments) as halogen, hydroxyl, carboxyl, morpholine, chalcone, and hexaoxy groups were synthesized and character ized [40][41][42][43][44][45][46][47][48][49][50][51][52]. The incorporation of fluorine atoms into PI macromolecules ensures improved solubility of the polymers in diverse organic solvents, while their good thermal and mechanical characteristics are pre served, and provides decreases in gas permeability and colorability of the films [40][41][42].…”
Section: Polyimides and Polyamidesmentioning
confidence: 99%
“…The effects of incorporation of various fragments or functional groups on the structures of film materials [60][61][62][63] and the photosensitivity [45,46,64], thermal [60,61], mechanical [61,63,65], and transport prop erties [63,[66][67][68] of PIs were examined. It was shown that the thermal, mechanical, and structural proper ties of polyimides change appreciably after the intro duction of SO 2 groups into macromolecules.…”
Section: Polyimides and Polyamidesmentioning
confidence: 99%
“…Many efforts have been made to overcome the above problems through the modification of PI structures. Generally speaking, the introduction of aliphatic moieties, fluorine atoms and bulky pendant groups into PIs can not only evidently enhance their solubility but also improve the transparency and eliminate the color of PI films . However, the aliphatic moieties usually cause deterioration of the inherent thermal stability of aromatic PIs and fluorine atoms often increase their cost .…”
Section: Introductionmentioning
confidence: 99%
“…6 Over the past few decades, several approaches focused on structural modifications (mainly by designing and synthesizing new monomers) have been universally adopted to overcome the above mentioned problems. [7][8][9][10][11][12][13][14][15][16][17] They are as follows: (a) introduction of flexible linkages or aliphatic units to reduce chain stiffness; (b) introduction of side groups to hinder molecular packing and crystallization; (c) design and synthesis of isomeric or asymmetric monomers to suppress coplanar structures or molecular regularity; and (d) copolymerization of more than two different monomers. Among these approaches, the factors leading to better processability of a polyimide often conflict with other important requirements, such as mechanical properties, thermal resistance or chemical resistance.…”
mentioning
confidence: 99%