The influences of N become less distinct for TL, and for MEK they vanish at the (endothermal) theta temperature. For worse than theta conditions, the chi values of the long chains become less than that of short ones. This change in the sign of N-influences is in agreement with the ...
Richter, Comment on "What is the entanglement length in a polymer melt?" by M. Pu¨tz, K. Kremer, and G.S. Grest, Europhys. Lett. 52, 719 (2000).M. Pütz, K. Kremer, and G. S. Grest (2000) What is the entanglement length in a polymer melt? Europhys. Lett . 49 , p. ...
Learn what the normal transmission temperature is, factors affecting temperature, and how to check transmission temperature. Keep your car running smoothly!
we are using flame retardant polypropylene containers for our batteries. In that we are using KOH as electrolyte. our electrodes are nickel and cadmium. in that it is running with a temperature of 70 degrees Celsius. so recently we noticed that a layer of yellow color is forming on the wall...
How do thermosets behave around the glass transition temperature? How do intermolecular interactions affect the glass transition temperature? Why is heat absorbed in glass transition? How do side chain groups affect the glass transition temperature? How does crosslink density affect the polymer glass tr...
A thermoplastic, or thermosoftening plastic, is a plastic polymer material that becomes pliable or moldable at a certain elevated temperature and solidifies upon cooling.Most thermoplastics have a high molecular weight. The polymer chains associate by intermolecular forces, which weaken rapidly with inc...
When it reaches a temperature of about 110 C the polymer begins to crystallize. At 245 C these newly formed crystals melt. If the amorphous form of PET were heated from room temperature to the required drying temperature, it would agglomerate into one large mass and would then crystallize in...
a polymer like polyethylene does not melt sharply at one particular temperature into clean liquid. Instead, it becomes increasingly softer and, ultimately, turns into a very viscous, tacky molten mass. Further heating of this hot, viscous, molten polymer does convert it into various gases, but ...
it has high strength and flexibility, and when compared to the more widely used pla, it has good temperature resistance. petg is ideally suited to applications that need to be sturdy and smooth and aren’t prone to excessive shrinkage. it has great adhesive properties, but because it’s “...
In this regard, self-reinforced polymer composites could be a possibility because the matrix and the reinforcement have an analogous chemical makeup but different structures [123]. However, the melting temperature would also be similar for both constituent phases, and finding a proper processability ...