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Why is the glass transition temperature of polystyrene greater than of polypropylene?
Zuzanadudorova
Higher the glass transition temperature of the polystyrene can be attributed to the fact that sterically rigid bulky aromatic moieties like benzene in the styrene compared to that of aliphatic polypropylene
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoBecause wizards had made it so.
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What is the function of transition piece in pipe fittings?
Transition piece is mostly used where there is variation of Wall thickness greater tha 3/16" or the yield strength difference is greater than 20 ksi.
Condensation increases with greater?
Condensation Increases with relative HUMIDITY.
What is the difference between a 54AS139 and a 74As139 integrated circuit?
The 54 series are military specification versions with a greater operating temperature range.
What is the maximum pressure schedule 40 galvanized pipe can take?
Need to know the pipe diameter. 3 inch is the diameter of the galvanized pipe what is the working pressure of the pipe
What is thermal stability?
The decay rates of organic materials increase with temperature. Materials with a greater thermal stability will remain unchanged for a longer time.
Why does fish oil dissolve polystyrene?
Polystyrene is soluble in most oils to a greater or lesser degree, depending upon the particular oil, the temperature and the amount of time it is in contact with the polystyrene.
Which cup keeps hot water the hottest polystyrene or metal?
Polystyrene (especially the expanded "Styrofoam (R)" type) is a good insulator. Metals are good conductors of heat.The insulating cup will maintain a greater heat differential than the conductor so if there is a liquid in the cup that is at a greater temperature than the surroundings, the metal cup will loose more heat than the polystyrene cup.
The number of inner transition elements is greater than the number of transition elements?
No
What is the function of transition piece in pipe fittings?
Transition piece is mostly used where there is variation of Wall thickness greater tha 3/16" or the yield strength difference is greater than 20 ksi.
Why is polystyrene brittle?
Unfilled polystyrene is also known as crystal polystyrene (PS) or general purpose polystyrene (GPPS). However, since crystal polystyrene is brittle, other polymers are added to polystyrene to improve its strength, and copolymers are formed as a result. One such copolymer is high impact polystyrene (HIPS), which is produced by adding polybutadiene rubber to polystyrene during the polymerization process. HIPS is tougher and has a greater impact strength than unfilled polystyrene. There are different types of polystyrene. Extruded polystyrene (XPS) is one form of the polymer that has high tensile strength, with good elasticity. It is commonly known as Styrofoam™. The other common form of polystyrene is expanded polystyrene (EPS). Both EPS and XPS are made from similar materials but there are difference between the two. XPS has a higher density as compared to EPS, due to the absence of air passages between its cells. The higher density makes XPS more rigid and strong. Also, XPS is waterproof and is an effective thermal insulator. Read more in the related link.
Is polypropylene biodegradable?
Polypropylene can be biodegradable if it is made with EBD (enhanced bio decompositions) which can be easily broken down, fairly quickly, back to base compounds. A variety of packaging can now use biodegradable polypropylene.
Why does it take a short time to boil a small beaker of water?
Because there's very little water in it that requires heating. Each molecule requires heat to raise its temperature, and to make the phase transition to water vapor (steam). The greater the mass of the water, the greater the total energy required to heat it.
Should you open your windows on hot days?
If the house temperature inside is greater than the temperature outside the house, then yes. If the temperature outside the home is greater than the temperature inside of the home, then no.
What density does an object have to have to sink in water?
A density greater than that of water (which varies with temperature).
How does temperature affect vapor pressure?
Vapor pressure increases with temperature. As the temperature increases ,molecules of liquid find it easier to escape.
When do objects radiate heat?
When their temperature is greater than the temperature of the adjacent zones.
How does high temperature affect volume?
High temperature makes the volume greater.
