Synthesis and Characterization of Monofunctionalized Polyhedral Oligomeric Silsesquioxanes by Cohydrolytic and Cocondensation of Propyltrimethoxysilane and Vinyltrimethoxysilane

Biodegradable aliphatic-aromatic copolyesters/POSS nanocomposites were synthesized via in situ melt copolycondensation of terephthalic acid (TPA), poly(L-lactic acid) oligomer (OLLA), 1,4-butanediol (BDO) and polyhedral oligomeric silsesquioxanes (POSS) reagents (POSS-NH2 and POSS-PEG). The morphologies and dispersions of two POSS reagents in the nanocomposites and their effects on the mechanical and thermal properties were investigated. TEM and XRD characterizations confirmed that POSS-NH2 formed crystalline microaggregates and took poor dispersions in the nanocomposite, while POSS-PEG had better dispersion in the matrix. Due to the good dispersion and interfacial adhesion of POSS-PEG with the copolyester PBTL matrix, the tensile strength and the Young’s modulus greatly increased for PBTL/POSS-PEG nanocomposite. Moreover, compared with POSS-NH2 the existence of POSS-PEG imparted PBTL good flexibility and increased the mobility of the chains, so the glass-transition temperature and the heat of melting as well as the elongation at break were obviously influenced for PBTL/POSS-PEG nanocomposite.

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Synthesis and characterization of reactive polyhedral oligomeric silsesquioxanes (R-POSS) containing multi-N-methylol groups

Journal of Organometallic Chemistry ◽

10.1016/j.jorganchem.2009.12.001 ◽

2010 ◽

Vol 695 (5) ◽

pp. 687-691 ◽

Cited By ~ 9

Author(s):

Kongliang Xie ◽

Yanli Zhang ◽

Si Chen

Keyword(s):

Synthesis And Characterization ◽

Polyhedral Oligomeric Silsesquioxanes

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Synthesis and characterization of ion-exchangeable layered Octabenzenesulphonate Polyhedral Oligomeric Silsesquioxanes modified by surfactant

Materials Letters ◽

10.1016/j.matlet.2005.12.030 ◽

2006 ◽

Vol 60 (15) ◽

pp. 1823-1827 ◽

Cited By ~ 9

Author(s):

Lei Liu ◽

Lei Song ◽

Sheng Zhang ◽

Hong Guo ◽

Yuan Hu ◽

...

Keyword(s):

Synthesis And Characterization ◽

Polyhedral Oligomeric Silsesquioxanes

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Synthesis and characterization of highly pure azido-functionalized polyhedral oligomeric silsesquioxanes (POSS)

Chemical Communications ◽

10.1039/b909802j ◽

2009 ◽

pp. 5130 ◽

Cited By ~ 80

Author(s):

Vuthichai Ervithayasuporn ◽

Xin Wang ◽

Yusuke Kawakami

Keyword(s):

Synthesis And Characterization ◽

Polyhedral Oligomeric Silsesquioxanes

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Synthesis and characterization of photoluminescent vinylbiphenyl decorated polyhedral oligomeric silsesquioxanes

Organic & Biomolecular Chemistry ◽

10.1039/b814496f ◽

2009 ◽

Vol 7 (4) ◽

pp. 717-724 ◽

Cited By ~ 26

Author(s):

Nicolas R. Vautravers ◽

Pascal André ◽

A. M. Z. Slawin ◽

David J. Cole-Hamilton

Keyword(s):

Synthesis And Characterization ◽

Polyhedral Oligomeric Silsesquioxanes

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Synthesis and Characterization of Nanocomposites Based on Copolymers of POSS-ONDI Macromonomer and TFONDI: Effect of POSS on Thermal, Microstructure and Morphological Properties.

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.123-125.775 ◽

2010 ◽

Vol 123-125 ◽

pp. 775-778 ◽

Cited By ~ 6

Author(s):

D. Gnanasekaran ◽

B.S.R. Reddy

Keyword(s):

1H Nmr ◽

Ring Opening ◽

Morphological Properties ◽

Synthesis And Characterization ◽

29Si Nmr ◽

Spectroscopic Techniques ◽

Polyhedral Oligomeric Silsesquioxanes ◽

Grubbs Catalyst ◽

Ft Ir

Polyhedral oligomeric silsesquioxanes (POSS) possessing 7-oxanorbornene-5, 6-dicarboximide (POSS-ONDI) functionalized macromers are synthesised and well characterized using FT-IR, 1H, 13C and 29Si-NMR spectroscopic techniques. The homopolymer of [N-3(trifluoromethyl)phenyl-7-oxanorbornene-5,6-dicarboximide] (TFONDI) and a series of linear copolymers between [N-(POSS)-7-oxanorbornene-5, 6-dicarboximide] POSS-ONDI and TFONDI are prepared through ring opening metathesis polymerisation (ROMP) using Grubbs catalyst. All the polymers are characterized using FT-IR, 1H-NMR, TGA, DSC, AFM, TEM, XRD and GPC techniques.

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