ICCAS OpenIR
Polymethylsilsesquioxane and Hydroxyl-Terminated Polydimethylsiloxane Composite: Vapor Incubation before Thermal Curing
Li, Yanfang; Yang, Shuguang; Liu, Haiyun; Li, Xiaofeng; Dai, Zhen; Zhao, Ning; Xu, Jian
2009-02-05
Source PublicationJOURNAL OF APPLIED POLYMER SCIENCE
ISSN0021-8995
Volume111Issue:3Pages:1454-1461
AbstractA composite film of polymethylsilsesquioxane (PMSQ) and hydroxyl-terminated polydimethylsiloxane (PDMS) was prepared by incubating PMSQ prepolymer and PDMS solution in a vapor environment before thermal curing. Vapor incubation has a significant influence on the morphology and properties of the cured composite, and the vapor incubation was conducted under three different conditions, i.e., acidic, neutral, and basic. In the acidic vapor of a pH rather lower than the isoelectric point (IEP) of the silanol, the reaction between PMSQ and PDMS through silanol condensation was promoted by the protonation of silanol. PDMS rubber particles with a domain size of about 100 nm were formed in PMSQ matrix, and the flexible modulus of the film was unproved. While, the morphology of the resultant film was smooth and uniform after incubation in a neutral water vapor. The basic vapor facilitated the gelation of composite due to high pH inducing more rapid silanol condensation in PMSQ than phase separation. Moreover, excellent optical transparency, insulation, and thermal stability of the composite were also retained after the PDMS incorporation. (c) 2008 Wiley Periodicals, Inc. J Appl Polym Sci 111: 1454-1461, 2009
KeywordHydroxyl-terminated Polydimethylsiloxane Polymethylsilsesquioxane Silanol Condensation
DOI10.1002/app.28943
Indexed BySCI
Language英语
WOS IDWOS:000261660200037
PublisherJOHN WILEY & SONS INC
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/67988
Collection中国科学院化学研究所
Corresponding AuthorXu, Jian
AffiliationChinese Acad Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Li, Yanfang,Yang, Shuguang,Liu, Haiyun,et al. Polymethylsilsesquioxane and Hydroxyl-Terminated Polydimethylsiloxane Composite: Vapor Incubation before Thermal Curing[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2009,111(3):1454-1461.
APA Li, Yanfang.,Yang, Shuguang.,Liu, Haiyun.,Li, Xiaofeng.,Dai, Zhen.,...&Xu, Jian.(2009).Polymethylsilsesquioxane and Hydroxyl-Terminated Polydimethylsiloxane Composite: Vapor Incubation before Thermal Curing.JOURNAL OF APPLIED POLYMER SCIENCE,111(3),1454-1461.
MLA Li, Yanfang,et al."Polymethylsilsesquioxane and Hydroxyl-Terminated Polydimethylsiloxane Composite: Vapor Incubation before Thermal Curing".JOURNAL OF APPLIED POLYMER SCIENCE 111.3(2009):1454-1461.
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