NDLI: Synthesis of Polyyttriocarbosilane and its Conversion to Yttrium-Containing Ceramic

Content Provider	Springer Nature Link
Author	Yang, Daxiang Yu, Yuxi San, Haisheng Song, Yongcai
Copyright Year	2011
Abstract	The polyyttriocarbosilane (PYCS) with various quantities of yttrium was obtained by reacting yttrium acetylacetonate (Y(AcAc)$_{3}$) with polycarbosilane (PCS). The molecular weight, softening point, and Si–H bond content of the resulting PYCS are controlled by the Y(AcAc)$_{3}$:PCS weight ratio, reaction temperature and reaction time. The main chain of the PYCS is made up of alternating carbon and silicon atoms with small amount of Si–O–Y presented in the main chain and Si–H groups at the side chain. The pyrolysis process of PYCS was investigated by TG and XRD. The results reveal that the polymer-to-ceramic transition of the PYCS occurs in three steps. The final ceramics obtained at 1,800 °C contain a large number of β-SiC crystallites and a small amount of α-SiC crystallites.
Starting Page	731
Ending Page	736
Page Count	6
File Format	PDF
ISSN	15741443
Journal	Journal of Inorganic and Organometallic Polymers and Materials
Volume Number	22
Issue Number	4
e-ISSN	15741451
Language	English
Publisher	Springer US
Publisher Date	2011-12-27
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ceramic precursor Polycarbosilane Yttrium acetylacetonate Pyrolysis Inorganic Chemistry Polymer Sciences Organic Chemistry
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Polymers and Plastics

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Synthesis of Polyyttriocarbosilane and its Conversion to Yttrium-Containing Ceramic