Electrochemical and mechanical properties of polyolefin hard segment with polyethylene oxide conductive phase block copolymers

2016 ◽  
Vol 289 ◽  
pp. 188-193 ◽  
Author(s):  
MengXuan Tang ◽  
Hui Wang ◽  
Yong-Gun Lee ◽  
Yasuo Takeda ◽  
Osamu Yamamoto ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Block Copolymers ◽  
Polyethylene Oxide ◽  
Hard Segment ◽  
Conductive Phase

Structural and mechanical properties of new block copolymers designed for biomedical use

Polymer ◽  
1977 ◽  
Vol 18 (4) ◽  
pp. 387-390 ◽  
Author(s):  
P. Ferruti ◽  
E. Martuscelli ◽  
L. Nicolais ◽  
M. Palma ◽  
F. Riva
Keyword(s):  
Mechanical Properties ◽  
Block Copolymers

Effect of Block Molecular Weight on the Mechanical Properties of PA1010-b-PEG Segmented Block Copolymers

2012 ◽  
Vol 512-515 ◽  
pp. 2127-2130
Author(s):  
Li Huo ◽  
Cai Xia Dong
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Block Copolymers ◽  
Microphase Separation ◽  
Soft Segment ◽  
Mechanical Measurements ◽  
Wide Range ◽  
Hard Block ◽  
Higher Temperature ◽  
Hard Segments

The mechanical properties were investigated of a series of PA-PEG thermalplastic elastomer based on PA1010 and polytetramethylene glycol (PEG) with varying hard and soft segment content. Dynamic mechanical measurements of these polymers have carried out over a wide range of temperatures. The block copolymers exhibit three peaks, designated as α, β and γ in the tanδ-temperature curve. The α transition shifts to higher temperature with increasing hard block molecular weight. However, at a constant hard molecular weight, the α transition shifts to higher temperature and the damping increases on increasing the soft segment molecular weight. DMA results show that the block copolymers exhibit a microphase separation structure and both soft and hard segments were found to be crystallizable. The degree of phase separation increases with increasing hard block molecular weight.

scholarly journals Influence of Uncoupled Diblock Molecules on Mechanical Properties of Styerene/Butadiene/ Styrene Triblock Copolymers

2012 ◽  
Vol 12 ◽  
pp. 149-156 ◽  
Author(s):  
Rameshwar Adhikari
Keyword(s):  
Mechanical Properties ◽  
Block Copolymers ◽  
Tensile Deformation ◽  
Triblock Copolymers ◽  
Large Strain ◽  
Deformation Behaviour ◽  
Mechanical Analysis ◽  
Transmission Electron ◽  
Star Block Copolymers ◽  
Butadiene Styrene

The influence of the presence of uncoupled polystyrene-block-polybutadiene (SB) diblock chains to polystyrene-block-polybutadiene-block-polystyrene (SBS) triblock copolymers on the mechanical properties of the latter has been studied by means of tensile testing and dynamic mechanical analysis preparing several lamellae forming SBS/ SB blends through solution casting. The microphase-separated morphology of the samples was investigated by transmission electron microscopy. Both large strain deformation tensile deformation behaviour and viscoelastic properties of the SBS block copolymers were found to be affected appreciably by the presence of uncoupled SB diblock. The storage modulus of linear SBS was found to drop more sharply in the plateau region than for the radial SBS at the same SB content. At low SB content (up to 20 wt.-% for linear SBS and still higher for radial one), the overall tensile properties was not negatively influenced. On the whole, star block copolymers were found to be less sensitive towards the presence of diblock.DOI: http://dx.doi.org/10.3126/njst.v12i0.6493 Nepal Journal of Science and Technology 12 (2011) 149-156

Polyethylene oxide additives as a factor in the structural and mechanical properties of cellulose acetate spinning solutions and fibres

1972 ◽  
Vol 2 (5) ◽  
pp. 464-467
Author(s):  
M. V. Polovnikova ◽  
V. A. Kozyrev ◽  
V. K. Pshedetskaya ◽  
R. I. Khomenko ◽  
I. Z. Zakirov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Cellulose Acetate ◽  
Polyethylene Oxide

The phase composition of polyblock block-copolymers of polyarylene sulphonoxide and polyethylene oxide

1983 ◽  
Vol 25 (9) ◽  
pp. 2326-2336 ◽  
Author(s):  
Yu.K. Godovskii ◽  
I.A. Volegova ◽  
A.I. Aksenov ◽  
I.P. Storozhuk ◽  
V.V. Korshak
Keyword(s):  
Phase Composition ◽  
Block Copolymers ◽  
Polyethylene Oxide
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