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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Structure-property behavior of polyimide homopolymers, copolymers, and blends /

Arnold, Cynthia A., January 1990 (has links)
Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 1990. / Vita. Abstract. Includes bibliographical references (leaves 219-234). Also available via the Internet.
2

Synthesis of two-dimensional scaffolds and metallofoldamers

Dong, Zhenzhen. January 2008 (has links)
Thesis (Ph.D.)--University of Delaware, 2007. / Principal faculty advisor: Joseph M. Fox, Dept. of Chemistry & Biochemistry. Includes bibliographical references.
3

Synthesis and characterization of high performance polyimide homopolymers and copolymers /

Rogers, Martin E., January 1993 (has links)
Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 1993. / Vita. Abstract. Includes bibliographical references (leaves 217-226). Also available via the Internet.
4

Contribution à l'étude de nouveaux précurseurs de polyimides /

Marasco, Jean-Paul. January 1900 (has links)
Th. doct.--Matériaux macromoléculaires et composites--Lyon 1, 1995. N°: 254-95. / 1996 d'après la déclaration de dépôt légal. Bibliogr. p. 144-151. Résumé en français et en anglais.
5

Synthèse et caractérisation de polyimides aromatiques à propriétés diélectriques spécifiques /

Gain, Olivier. January 1900 (has links)
Th. doct.--Matériaux macromoléculaires et composites--Lyon 1, 1995. N°: 153-95. / 1996 d'après la déclaration de dépôt légal. Bibliogr. p. 219-228. Résumé en français et en anglais.
6

The synthesis and characterization of semicrystalline polyimides /

Brink, M. Heather, January 1994 (has links)
Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 1994. / Vita. Abstract. Includes bibliographical references (leaves 198-206). Also available via the Internet.
7

A model of the change in viscosity of polyimide PMR-15 during cure

Dangarwala, Gaurav A. January 1993 (has links)
Thesis (M.S.)--Ohio University, November, 1993. / Title from PDF t.p.
8

Synthesis and characterization of polyimides with novel structures /

Qi, Yu, Carleton University. Dissertation. Chemistry. January 1997 (has links)
Thesis (Ph. D.)--Carleton University, 1997. / Also available in electronic format on the Internet.
9

Synthesis and characterization of functional and high performance polyimides /

Hasanain, Fatima. January 1900 (has links)
Thesis (M.Sc.) - Carleton University, 2008. / Includes bibliographical references (p. 65). Also available in electronic format on the Internet.
10

Synthesis and Characterization of Polyimides Derived from Heterocyclic Diamines

Chen, Yi-Ming 17 July 2002 (has links)
Homopolyimides derived from a novel heterocyclic diamine, 2,6-diaminobenzo- [1,2-d:4,5-d]bisthiazole (DABBT), and either pyromellitic dianhydride (PMDA, A-series) or 4,4¡¦-sulfonyldiphthalic dianhydride (SDPA, B-series), as well as copolyimides containing different molar ratios of DABBT and 4,4¡¦-diaminodiphenyl ether (ODA), have been synthesized via soluble polyamic acids (PAA) followed by the thermal imidization. Polymer properties such as viscosity, thermal stability, crystallinity, and solubility were characterized and correlated to their monomer structure. It is found that inherent viscosity of PAA increases with increasing molar ratio of ODA/DABBT; inherent viscosity of A-series ranges from 0.11 - 1.04 dL/g and the B-series from 0.11 - 0.31 dL/g. All the copolyimides can form flexible films; A transition from tough to brittle film is found as more DABBT is added. Results from thermal gravimetric analysis indicate that the degradation temperature at 10% weight loss locates from 561¡V 635 ¢J and char yield at 800 ¢J from 56 ¡V 61% for A series; corresponding data of B-series are 489 ¡V 560 ¢J and 47 ¡V 52%, due primarily to the softer and more flexible solfone unit in SDPA. Also, the degradation temperature remains little changed with varying diamine ratios. X-ray diffractometry suggest all the copolyimides are amorphous and the PMDA/DABBT and SDPA/DABBT homopolyimides are semi-crystalline. The solubility tests indicate that solubility of B-series is better than that of A-series due to the flexible sulfone linkage; the solubility of block copolymers is better than that of random copolymers; in addition, the copolyimides with higher DABBT content have a better solubility.

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