Download Liquid Crystalline Polymers. Proceedings of the by C. Carfagna (Eds.) PDF

By C. Carfagna (Eds.)

The overseas Workshop on Liquid Crystalline Polymers (LCPs) held in June 1993 in Italy attracted the various best researchers during this region of polymer technological know-how. The assembly supplied a discussion board for the alternate of study and ideas on present advancements and destiny examine and functions of liquid crystalline polymers.

This quantity includes a range of the simplest papers awarded on the assembly protecting synthesis and characterization, liquid crystalline thermosets, rheology, blends and composites containing LCPs and delivery houses

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Read or Download Liquid Crystalline Polymers. Proceedings of the International Workshop on Liquid Crystalline Polymers, WLCP 93, Capri, Italy, June 1–4 1993 PDF

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Additional resources for Liquid Crystalline Polymers. Proceedings of the International Workshop on Liquid Crystalline Polymers, WLCP 93, Capri, Italy, June 1–4 1993

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REFERENCES Sunil, K. Varshner, J. Macromol. , C26, 551 (1986). 9. Chem. Abstract, 75:64589V; Chem. Abstract, 70: P87309z. S. H. Wang, G. M. Jin and M X . 4, N o . 2 , p p 125-8,1993. Z. Sun, SJ. Z. Z. Xia, "The third National S y m p o s i u m o n Polymeric Liquid Crystals", Preprints, Jinan, China, (1991), 49. G. M. Donald, Mol. Cryst. Liq. 153,491 (1987). S. H. Wang, G. M. Jin, ACTA Polymerica Sinica, in press. 3 Molecular Structure Refinement of a Main-Chain Thermotropic Polyester Containing a 2-PhenylBenzoxazole Unit by Means of the Fiber Whole-Pattern Method 1 ROBERTO CENTORE and PIO IANNELLI 2 1 Dipartimento di Chimica, Universita di Napoli, 80134 Napoli, Italy Dipartimento di Fisica, Université di Salerno, 1-84081 Baronissi (Salerno), Italy 2 ABSTRACT T h e m o l e c u l a r a n d c r y s t a l s t r u c t u r e at r o o m t e m p e r a t u r e of a p o l y m e r b e l o n g i n g t o a n e w class of thermotropic main-chain semi-flexible polyesters containing a 2-phenylb e n z o x a z o l e u n i t h a s b e e n i n v e s t i g a t e d .

F i n a n c i a l s u p p o r t b y M i n i s t e r o d e l l ' U n i ver sit â e d é l i a R i c e r c a S c i e n t i f i c a e T e c n o l o g i c a a n d b y C o m i t a t o N a z i o n a l e d é l i e R i c e r c h e is a l s o a c k n o w l e d g e d . T a b l e 2. S t r u c t u r a l a n d n o n - s t r u c t u r a l p a r a m e t e r s a s o b t a i n e d after 0 refining t h e s t r u c t u r e . 066 Hydrogen a t o m s were included in the calculation by evaluating atoms coordinates 2 3 a c c o r d i n g t o s p a n d s p g e o m e t r y .

Cooling rate 20 C/min « i 2 10 Fig. 2 · 1 I \ ^ ~ i 1 ι 20 30 40 2 10 20 30 2 θ (* ) 2 θ (· ) x-ray diffraction patterns of the PBES A original samples of PBES a-e 1 40 Β samples kept at 290 C / 2 . 6 x 10~ MPa for 6h e a X-ray diffraction patterns of p o l y m e r s synthesized w e r e s h o w n in Figure 2. There w e r e pervasive peaks near 20° (2^) i n Figure 2(A) for various composition original p o l y m e r s . The peak is a character for nematic liquid crystalline polymers [5]. The peak intensity marking degree of order in the s o m e p o l y m e r s b e c a m e strong w i t h increasing c o m p o n e n t of PHBA.

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