ICCAS OpenIR
Studies on the thermal stability and structural characterization of star polysiloxane
Fan, ZD; Xie, ZM
2000-10-01
Source PublicationACTA POLYMERICA SINICA
ISSN1000-3304
Issue5Pages:590-593
AbstractThe low temperature properties of polydimethysiloxane ( PDMSN ) containing hexaphenylcyclotrisilazane (P-3(N)) and the commerical PDMS were comparable according to their DSC data. The glass transition temperature of PDMSN was - 120 degrees C. After heating for 24 hours at 350 degrees C in a sealed N-2 system,the weight loss of PDMSN was 4 similar to 10 times lower as that of the commericial PDMS, and decreased with increasing its nitrogen content,thus,its least weight loss was 1.1%. The Si-29-NMR spectra, IR spectra and the relationship between the molecular weight (by GPC) and limiting viscosity number of PDMSN which was synthesized through the polymerization of cyclosiloxane with trilithium salt (P-3(NLi)) Of hexaphenylcyclotrisilazane as an initiator, demonstrated that PDMSN was a star polymer. Also, N,N,N-trimethylhexaphenylcyclotrisilazane, which was prepared quantitatively through the reaction of P-3(NLi) and MeI in the polar solvent, was characterized by the elemental analysis, H-1-NMR and Si-29-NMR spectra, IR spectra. The star polymer nature of PDMSN was also proved indirectly by the characterization of N,N,N-trimethylhexaphenylcyclotrisilazane.
KeywordPolydimethylsiloxane Containing Hexaphenylcyclotrisilazane Star Polymer Thermal Stability
Indexed BySCI
Language英语
WOS IDWOS:000089889100015
PublisherSCIENCE PRESS
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/76392
Collection中国科学院化学研究所
Corresponding AuthorFan, ZD
AffiliationChinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Fan, ZD,Xie, ZM. Studies on the thermal stability and structural characterization of star polysiloxane[J]. ACTA POLYMERICA SINICA,2000(5):590-593.
APA Fan, ZD,&Xie, ZM.(2000).Studies on the thermal stability and structural characterization of star polysiloxane.ACTA POLYMERICA SINICA(5),590-593.
MLA Fan, ZD,et al."Studies on the thermal stability and structural characterization of star polysiloxane".ACTA POLYMERICA SINICA .5(2000):590-593.
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