Interfacial interactions and mechanical properties of filled polymers

1990 ◽  
Vol 40 (910) ◽  
pp. 1783-1794 ◽  
Author(s):  
M. Y. Boluk ◽  
H. P. Schreiber
Keyword(s):  
Mechanical Properties ◽  
Interfacial Interactions ◽  
Filled Polymers

Role of Interfacial Interactions on Mechanical Properties of Biomimetic Composites for Bone Tissue Engineering

2005 ◽  
Vol 898 ◽  
Author(s):  
Devendra Verma ◽  
Rahul Bhowmik ◽  
Bedabibhas Mohanty ◽  
Dinesh R Katti ◽  
Kalpana S Katti
Keyword(s):  
Mechanical Properties ◽  
Tissue Engineering ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Mechanical Response ◽  
Density Ratio ◽  
Interfacial Interactions ◽  
Porous Composites ◽  
Properties Of Composites

AbstractInterfaces play an important role in controlling the mechanical properties of composites. Optimum mechanical strength of scaffolds is of prime importance for bone tissue engineering. In the present work, molecular dynamics simulations and experimental studies have been conducted to study effect of interfacial interactions on mechanical properties of composites for bone replacement. In order to mimic biological processes, hydroxyapatite (HAP) is mineralized in presence of polyacrylic acid (PAAc) (in situ HAP). Further, solid and porous composites of in situ HAP with polycaprolactone (PCL) are made. Mechanical tests of composites of in situ HAP with PAAc have shown improved strain recovery, higher modulus/density ratio and also improved mechanical response in simulated body fluid (SBF). Simulation studies indicate potential for calcium bridging between –COO− of PAAc and surface calcium of HAP. This fact is also supported by infrared spectroscopic studies. PAAc modified surfaces of in situ HAP offer means to control the microstructure and mechanical response of porous composites. Nanoindentation experiments indicate that apatite grown on in situ HAP/PCL composites from SBF has improved elastic modulus and hardness. This work gives insight into the interfacial mechanisms responsible for mechanical response as well as bioactivity in biomaterials.

Calculation of local mechanical properties of filled polymers

2007 ◽  
Vol 75 (3) ◽  
Author(s):  
George J. Papakonstantopoulos ◽  
Manolis Doxastakis ◽  
Paul F. Nealey ◽  
Jean-Louis Barrat ◽  
Juan J. de Pablo
Keyword(s):  
Mechanical Properties ◽  
Filled Polymers

Influence of particle size and interfacial interactions on the physical and mechanical properties of particle-filled myofibrillar protein gels

RSC Advances ◽  
2015 ◽  
Vol 5 (75) ◽  
pp. 60723-60735 ◽  
Author(s):  
Andrew J. Gravelle ◽  
Shai Barbut ◽  
Alejandro G. Marangoni
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Elastic Moduli ◽  
Physical And Mechanical Properties ◽  
Surface Effects ◽  
Myofibrillar Protein ◽  
Interfacial Interactions ◽  
Filler Size ◽  
Protein Gels

The mechanical properties of glass and wax particle-filled myofibrillar protein gels were characterized based on filler size and surface effects. Increases in elastic moduli were explained using established models describing particle-filled networks.

Tungsten Powder Filled Polymers for Flexible Radiation Shields in Nuclear Industries

2017 ◽  
Author(s):  
Binyou Yan ◽  
Jiupeng Song ◽  
Wei Wang ◽  
Yang Yu
Keyword(s):  
Mechanical Properties ◽  
Tungsten Powder ◽  
Filled Polymers ◽  
Lower Toxicity ◽  
Radiation Shields ◽  
Γ Ray

A novel type of flexible composite with tungsten powder filled in polymers (TPFP) homogeneously was developed as an alternative to lead (Pb) based radiation shields used in nuclear industries. TPFP had a density in the range of 4 to 11.3 g/cm3, which can be tailor-made according to the applications. In addition to the advantage of lower toxicity over Pb-based shielding, TPFP can be formed into various shapes, such as pipe shields, pipe wraps, safe floor shields, blankets, etc. The mechanical properties and attenuation of γ-ray was investigated for the developed TPFP.

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