Improvement of mechanical properties and blood compatibility of PLLA nanocomposites by incorporation of polyhedral oligomeric silsesquioxane

2012 ◽  
Vol 20 (9) ◽  
pp. 996-1001 ◽  
Author(s):  
Quang Vu Bach ◽  
Jiyeon Choi ◽  
Yoon Ki Joung ◽  
Bang Ju Park ◽  
Dong Keun Han
Keyword(s):  
Mechanical Properties ◽  
Blood Compatibility ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Oligomeric Silsesquioxane

Poly(ε-caprolactone)-based shape memory polymers crosslinked by polyhedral oligomeric silsesquioxane

RSC Advances ◽  
2016 ◽  
Vol 6 (93) ◽  
pp. 90212-90219 ◽  
Author(s):  
Pengfei Yang ◽  
Guangming Zhu ◽  
Xuelin Shen ◽  
Xiaogang Yan ◽  
Jing Nie
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Shape Memory ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Shape Memory Polymers ◽  
Complete Recovery ◽  
Memory Network ◽  
Oligomeric Silsesquioxane

A POSS–PCL shape memory network is synthesized. The cage-like POSS not only serves as a chemical netpoint, also causes improvement in mechanical properties. Optimized networks exhibit both excellent tensile strength and nearly complete recovery.

Poly(styrene-b-butadiene-b-styrene)-Dye-Coupled Polyhedral Oligomeric Silsesquioxanes

2010 ◽  
Vol 123-125 ◽  
pp. 169-172
Author(s):  
Steven Spoljaric ◽  
Robert A. Shanks
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Block Copolymer ◽  
Exponential Function ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Element Model ◽  
Polyhedral Oligomeric Silsesquioxanes ◽  
Creep And Recovery ◽  
Oligomeric Silsesquioxane ◽  
Colour Coordinates

Dye-coupled polyhedral oligomeric silsesquioxane (POSS) were prepared and the coloured POSS particles were ultrasonically solution dispersed in poly(styrene-b-butadiene-b-styrene) (SBS). POSS molecules contained either isobutyl or phenyl groups to provide selective compatibility with either the soft (butadiene) or hard (styrene) phase within the block copolymer. The composition and thermal stability were characterised using thermogravimetry. Colour coordinates were measured. Tensile mechanical properties, creep and recovery were determined. Creep was modeled using the 4-element model of Maxwell and Kelvin-Voigt, while recovery correlated with the stretched-exponential function of Kohlrausch, Williams and Watts.

Thermal and mechanical properties of polymethyl mathacrylate reinforced by polyhedral oligomeric silsesquioxane

e-Polymers ◽  
2011 ◽  
Vol 11 (1) ◽  
Author(s):  
Benghong Yang ◽  
Meng Li ◽  
Bangping Song ◽  
Yun Wu
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Thermal And Mechanical Properties ◽  
Sem Images ◽  
Pmma Matrix ◽  
Oligomeric Silsesquioxane ◽  
Tga And Dsc ◽  
Thermal Stability Of

AbstractA series of Inorganic/organic nanocomposites were prepared by blending cage-like carboxyl-bearing polyhedral oligomeric silsesquioxane (carboxyl-POSS) with polymethyl mathacrylate (PMMA) in THF solvent. FTIR and 29Si-NMR were employed to characterize the structures of the nanocomposites. SEM images showed that the as-prepared films were smooth and no aggregation of carboxyl-POSS was observed. TGA and DSC results showed that the incorporation of small amount of nanosize carboxyl-POSS enhanced the thermal stability of PMMA. When 1.0 wt% of carboxyl-POSS was incorporated into PMMA matrix, the Tg and Td increased by 16.9 °C and 21.0 °C, respectively. However, higher POSS contents (>1.0 wt%) would deteriorate the thermal and mechanical properties of the nanocomposites.

The research progress of polyhedral oligomeric silsesquioxane (POSS) applied to electrical energy storage elements

2017 ◽  
Vol 10 (02) ◽  
pp. 1730001 ◽  
Author(s):  
Hong-Li Chen ◽  
Xiao-Ning Jiao ◽  
Jin-Tao Zhou
Keyword(s):  
Mechanical Properties ◽  
Electrode Materials ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Lithium Ion ◽  
Proton Exchange ◽  
Hybrid Nanoparticles ◽  
Solid Polymer ◽  
Research Progress ◽  
Inorganic Hybrid ◽  
Oligomeric Silsesquioxane

Polyhedral oligomeric silsesquioxane (POSS) is a kind of organic–inorganic hybrid nanoparticle. This paper introduces the research progress of different kind of POSS organic–inorganic hybrid nanoparticles applied to lithium-ion batteries, fuel batteries, and supercapacitors by researchers on mechanical properties, thermal properties and electrochemistry properties. The results showed that the ionic conductivity of POSS/Li-ion solid polymer electrolyte reached 3.26[Formula: see text][Formula: see text][Formula: see text]10[Formula: see text][Formula: see text]S/cm and mechanical properties were commendable. The proton conductivity of POSS hybrid proton exchange membranes came to the level of 6.46[Formula: see text][Formula: see text][Formula: see text]10[Formula: see text][Formula: see text]S/cm and the mechanical strength was 18[Formula: see text]MPa with less content of POSS. With the inorganic core of POSS, smaller and more uniform multi-pore electrode materials offer a new idea on the fabrication of supercapacitor electrode materials.

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