Anisotropy of the mechanical properties of cross-linked poly(n-butyl methacrylate)

1974 ◽  
Vol 8 (1) ◽  
pp. 131-132
Author(s):  
V. G. Sinyavskii ◽  
A. N. Kulaev
Keyword(s):  
Mechanical Properties ◽  
Butyl Methacrylate

scholarly journals Friction and Mechanical Properties of AFM-Scan-Induced Ripples in Polymer Films

2021 ◽  
Vol 7 ◽  
Author(s):  
Sebastian Friedrich ◽  
Brunero Cappella
Keyword(s):  
Mechanical Properties ◽  
Polymer Films ◽  
Mechanical Response ◽  
Butyl Methacrylate ◽  
Clear Correlation ◽  
Contact Mode ◽  
Cantilever Deflection ◽  
Atomic Force ◽  
Volume Measurements ◽  
Force Volume

When compliant samples such as polymer films are scanned with an atomic force microscope (AFM) in contact mode, a periodic ripple pattern can be induced on the sample. In the present paper, friction and mechanical properties of such ripple structures on films of polystyrene (PS) and poly-n-(butyl methacrylate) (PnBMA) are investigated. Force volume measurements allow a quantitative analysis of the elastic moduli with nanometer resolution, showing a contrast in mechanical response between bundles and troughs. Additionally, analysis of the lateral cantilever deflection when scanning on pre-machined ripples shows a clear correlation between friction and the sample topography. Those results support the theory of crack propagation and the formation of voids as a mechanism responsible for the formation of ripples. This paper also shows the limits of the presented measuring methods for soft, compliant, and small structures. Special care must be taken to ensure that the analysis is not affected by artefacts.

Prevention of Tissue Adhesion by a Spontaneously Formed Phospholipid Polymer Hydrogel

2007 ◽  
Vol 342-343 ◽  
pp. 777-780 ◽  
Author(s):  
Mizuna Kimura ◽  
Tomohiro Konno ◽  
Madoka Takai ◽  
Noriyuki Ishiyama ◽  
Toru Moro ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aqueous Solutions ◽  
Viscoelastic Properties ◽  
Gelation Time ◽  
Butyl Methacrylate ◽  
Tissue Adhesion ◽  
Polymer Hydrogels ◽  
Physiological Conditions ◽  
Phospholipid Polymer

We investigated phospholipid polymer hydrogels containing Fe3+ ions (PMA/PMB/Fe hydrogel) for their use as antiadhesive materials in the healing tissues. These hydrogels were prepared from the aqueous solutions of poly(2-methacryloyloxyethyl phosphorylcholine (MPC)-comethacrylic acid) (PMA) and poly(MPC-co-n-butyl methacrylate) (PMB). The PMA/PMB hydrogel is formed by the intermolecular interactions between PMA and PMB, and it reversibly dissociates under physiological conditions. The addition of Fe3+ ions could control the gelation time and the dissociation time. Mechanical properties such as the gelation time and viscoelastic properties can be controlled by the FeCl3 concentration. With regard to biocompatibility, no evidence of inflammation was observed in vivo. Therefore, the PMA/PMB/Fe hydrogel has a potential to be used as an antiadhesive material.

Studies on mechanical properties, dielectric behavior and DC conductivity of neodymium oxide/poly (butyl methacrylate) nanocomposites

2020 ◽  
pp. 096739112096065
Author(s):  
K Suhailath ◽  
Meenu Thomas ◽  
MT Ramesan
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Neodymium Oxide ◽  
Dielectric Behavior ◽  
Dc Conductivity ◽  
Butyl Methacrylate ◽  
X Ray Diffraction ◽  
Sem Images ◽  
X Ray ◽  
Uniform Dispersion

The current article aims to develop poly (butyl methacrylate) (PBMA) nanocomposites with enhanced electrical and mechanical properties by incorporating neodymium oxide (Nd2O3) nanoparticles between the PBMA chains. The morphological, thermal and structural profiles of the PBMA nanocomposites reinforced with different loading of Nd2O3 nanoparticles were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). The SEM images revealed that the morphology of the PBMA was significantly influenced by the insertion of Nd2O3. The uniform dispersion of Nd2O3 in the polymer composite was visible at 5 wt% loading of nano-filler. The main crystalline peaks of Nd2O3 nanoparticles in the amorphous PBMA structure were revealed by the X-ray diffraction analysis. The thermal stability of PBMA was greatly enhanced by the dispersion of Nd2O3 in the PBMA matrix. The tensile strength and elongation at break of the composites were measured and both results showed the enhanced mechanical properties of PBMA due to the reinforcement of Nd2O3 nanoparticles. The various parameters affecting the increased tensile strength of composite by the incorporation of nanoparticles were studied by different theoretical modeling. The electrical properties such as dielectric constant and the dielectric loss tangent (tan δ) of PBMA nanocomposites were enhanced with the addition of nanoparticles. Also, the DC conductivity of polymer composites was estimated and the applicability of different theoretical models for predicting the conductivity properties of PBMA/Nd2O3 nanocomposites were examined.

Structure of grafted polymer layer and its effect on mechanical properties of composites poly(butyl methacrylate)-Aerosil

1987 ◽  
Vol 29 (6) ◽  
pp. 1377-1381 ◽  
Author(s):  
M.Yu. Zaremskii ◽  
A.O. Stepanyan ◽  
A.V. Olenin ◽  
L.M. Yarysheva ◽  
V.P. Zubov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polymer Layer ◽  
Butyl Methacrylate ◽  
Grafted Polymer ◽  
Properties Of Composites
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