No abstract

The niclhods of inass-specLrotric.trie lhernlal analysis, I K spectroscopy, pyrolysis gas cliromalography and X-ray photoelectron spectroscopy were used for tlie invesligation of the effect of bcnzimidazole (BI) on the thermal behaviour of poly(4,4'-oxydiplienylene)-pyrorncllitamie acid (PAA). It is shown lliat the formation of a complex of PAA with BI is accompanied by the ordering of arnidc groups of the polymer, which leads to a decrease in the number of defective units in the resulting polyimide. Der EinfluP organischer Verbindungen auf Cyclisierungs-, Abbau-und Carbonisierungsprozesse in Poly(pyromel1itimiden)MIL den Methoden Massenspektronietrie-Thcrmoanalyse, IR-Spekiroskopie, Pyrolyse-Gaschromatographie und Roiitgenphotoelektronen-Spcktroskopie wurdc tler EinfluB von I3c~nzirnidazol (BI) auf das Verhalten von Poly(4,4'-oxydipheny1en)-pyromcllitarnidsaure ( P h A ) bei der thertnisctien Cyclisierung untersucht. Es wird gezeigt, daR die Hildung eines Komplexes von PAA mit BI cine Ordnung dcr Carboxyamid-Gruppen des Polymers bewirkt, was eine Abnahrne der Fehlstrukturen iu dern resultierenden Polyiniid zur Volge hat. Bsusnue opeanuuecrcux coeduiienuLi 7~a npoyeccbc yurcsuaayuu, aecmpyrcyuu u rcapborcusayuu e noaunupoaessumu-MUdUMeTOAaMH MaCC-CIIeKTpOMeTpH4eCKOrO TePMH9eCKOI'O aAaJIH3a, klK-CIIeKTpOCKOIIHH, IIHpOJIHTHYeCKOa ra30BOH XpOMaTOrpa@HH EI +OTO3JIeKTpOHHOfi CIIeHTpOCKOIIHH HCCJIeROBaHO BJIHFIHHe 6eH3HMHRa30JIa H a TepMHYeCKHe IIpeBpaqeHHFI IIOnll-(4,4'-OKCI?~EI@eHH~eH)-IIH~OMe~JIHTaMH~OHHCJIOTbI. 1TOKa3aH0, 9 T O 06Pa30BaHHe KOMIIJIeKCa IIOJIHaMHHOKHCJIOTbI C 6eA3HMHRa30JIOM COIIpOBOHcHaeTCFI yIIOPFIAO9HBaHHeM Kap60KCHaMHAHbIX I'pyIIII IIOJIHMepa, KOTOpOe BeAeT K YMeHbUIeHHIo 4HCJIa J(e@eKTHbIX 3BeHbeB B 06pa3yIoLIIeMCFI IIOJIHEIMHHe.

-Inorganic f i l m s obtained on t h e polymer support during plasma--chemical s y n t h e s i s have i n v e s t i g a t e d by XPS, IR-reflectance spectroscopy and SEM. The l a y e r s of S i N ALN, SiO were obtained of plasma chimical p r e 3 4' 2 c i p i t a t i o n on t h e s u r f a c e of polyimide f i l m s . The r e s u l t s of XPS i n v e s t i g at i o n s showed t h a t t h e polymer support t a k e s an a c t i v e p a r t i n t h e formation of t h e inorganic film. The d a t a of e l e c t r o n microscopy i n t h e i n i t i a l s t a g e s of f i l m growth i n d i c a t e t h a t i n t h e f i r s t s t a g e n u c l e i a r e formed. They a r e uniformly d i s t r i b u t e d on t h e s u r f a c e of t h e polymer support and e x h i b i t a pronounced d e n d r i t e s t r u c t u r e . The experimental r e s u l t s suggest t h a t under experimental c o n d i t i o n s m8,kea it p o s s i b l e t o o b t a i n v a r i o u s polymer-inorgan i c s t r u c t u r e devoid of t h e i n t e r f a c e .INTRODUCTION A t present t h e plasma-chemical treatment of v a r i o u s m a t e r i a l s i n c l u d i n g polymers i s one of t h e most r a p i d l y developing t r e n d s i n m a t e r i a l science. The plasma-chemical p r e c i p i t a t i o n of various inorganic Layers ( S i N

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

No abstract