Effect of the number of arms on the mechanical properties of a star-shaped cyclic olefin copolymer

2019 ◽  
Vol 10 (41) ◽  
pp. 5578-5583 ◽  
Author(s):  
Takumitsu Kida ◽  
Ryo Tanaka ◽  
Koh-hei Nitta ◽  
Takeshi Shiono
Keyword(s):  
Mechanical Properties ◽  
Thermal Properties ◽  
Physical Properties ◽  
Secondary Amine ◽  
Aggregation Number ◽  
Drastic Change ◽  
Cyclic Olefin Copolymer ◽  
Cyclic Olefin

The increase of aggregation number in a star-shaped cyclic olefin copolymer was succeeded by using a triazine-based secondary amine, which caused a drastic change in physical properties without changing the thermal properties.

scholarly journals Polymer materials with controlled degradation time

2018 ◽  
Vol 44 ◽  
pp. 00122 ◽  
Author(s):  
Ewelina Niedzielska ◽  
Anna Masek
Keyword(s):  
Mechanical Properties ◽  
Uv Radiation ◽  
Color Change ◽  
Polymer Materials ◽  
Effect Of Temperature ◽  
Oxygen Effect ◽  
Cyclic Olefin Copolymer ◽  
Cyclic Olefin ◽  
Before And After

The aim of this work was carry out accelarated process of ageing for cyclic olefin copolymer ethylene – norbornene (Topas). The Topas cyclic olefin copolymer (COC) family characterize high transparency, excellent mechanical properties and low water permeability. The influence of external factors such as UV radiation, elevated temperature, oxygen effect and humidity causing degradation of polymer macroparticles was also investigated. The properties of the polymer before and after weathering and UV radiation were also compared. Degradability was examinated by measuring color change, FTIR spectrum analysis and determination of the ageing factor k. The tensile strength, elongation at break and hardness of composites by Shore A method were measured. The synergistic effect of temperature, humidity and UV radiation reduces the mechanical properties of the samples tested, while the interaction of only UV radiation on the samples causes a significant change color.

Thermo mechanical properties of organically modified halloysite nanotubes/cyclic olefin copolymer composite

2014 ◽  
Vol 36 (5) ◽  
pp. 955-960 ◽  
Author(s):  
Parthajit Pal ◽  
Mrinal Kanti Kundu ◽  
Asish Malas ◽  
Chapal Kumar Das
Keyword(s):  
Mechanical Properties ◽  
Halloysite Nanotubes ◽  
Cyclic Olefin Copolymer ◽  
Cyclic Olefin ◽  
Organically Modified

scholarly journals Characterization of activated cyclic olefin copolymer: effects of ethylene/norbornene content on the physiochemical properties

The Analyst ◽  
2016 ◽  
Vol 141 (24) ◽  
pp. 6521-6532 ◽  
Author(s):  
Colleen E. O'Neil ◽  
Scott Taylor ◽  
Kumuditha Ratnayake ◽  
Swathi Pullagurla ◽  
Varshni Singh ◽  
...  
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Physical Properties ◽  
Cyclic Olefin Copolymer ◽  
Physiochemical Properties ◽  
Cyclic Olefin

The ethylene/norbornene content within cyclic olefin copolymer (COC) is well known to affect the chemical and physical properties of the copolymer, such as the glass transition temperature (Tg) and transparency.

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