Asked By: Jeremiah Anderson Date: created: Jun 17 2022
Why does HDPE have a higher density than LDPE GCSE
Answered By: Christian Phillips Date: created: Jun 18 2022
LDPE (low density polyethene) is made of branched chains, which are also held by intermolecular forces. Due to its branched nature, there are more gaps between the individual chains and overall there are less intermolecular forces. This means that LDPE is both less dense and less strong than HDPE.
Asked By: Wallace Butler Date: created: Aug 06 2022
Why does LDPE have low tensile strength
Answered By: Alfred Watson Date: created: Aug 06 2022
The polymer chains of LDPE are highly branched compared to HDPE. This branching prevents the chains from stacking neatly beside each other, reducing the intermolecular forces of attraction. This results in a plastic that is softer and more flexible, but which also has lower tensile strength.
Asked By: Francis Jenkins Date: created: Jan 02 2023
Why is HDPE so strong
Answered By: Joshua Price Date: created: Jan 05 2023
Although the density of HDPE is only marginally higher than that of low-density polyethylene, HDPE has little branching, giving it stronger intermolecular forces and tensile strength (38 MPa versus 21 MPa) than LDPE. The difference in strength exceeds the difference in density, giving HDPE a higher specific strength.
Asked By: Aaron Parker Date: created: Jan 29 2022
Why does HDPE have a higher melting point than LDPE
Answered By: Gabriel Richardson Date: created: Feb 01 2022
This is why the density is higher for HDPE and why the melting point is higher. The intermolecular forces (IMFs) for HDPE are greater than for LDPE because the chains can make closer approaches to each other and therefore have a slightly higher forces of attraction.
Asked By: Geoffrey Robinson Date: created: Sep 07 2022
Which property is characteristic of HDPE in comparison to LDPE quizlet
Answered By: Peter Butler Date: created: Sep 08 2022
What is the difference between HDPE and LDPE? High density – more crystalline, greater rigidity, strength, higher melting point, opaque.
Asked By: Austin Ross Date: created: Oct 18 2022
How does the molecular level structure of HDPE and LDPE influence their physical properties
Answered By: Blake Martinez Date: created: Oct 20 2022
Answer: The structure (e.g., extent of branching) determines how the individual polymer molecules can orient (or "pack") in the solid state. This, in turn, influences physical properties such as density, crystallinity, melting point, and strength. How can chemists control which type of polyethylene (LDPE vs.
Asked By: Miles Walker Date: created: Apr 13 2022
Which plastic has the highest density
Answered By: Miguel Robinson Date: created: Apr 14 2022
Results showed that from the analyzed waste plastic samples, the PVC sample has the highest density (1.3823 g/cm ³ ), followed by PC (1.2034 g/cm ³ ) and PA (1.0607 g/cm ³ ), while the ABS (0.9723 g/cm ³ ) presented the lowest value.
Asked By: Oswald Ward Date: created: Oct 28 2022
Is HDPE hard or soft plastic
Answered By: Cyrus Peterson Date: created: Oct 29 2022
HDPE plastic is hard-wearing and does not break down under exposure to sunlight. It can withstand more extreme temperatures than PET, both hot and cold. HDPE can be reused and recycled.
Asked By: Peter Bailey Date: created: Jan 21 2023
What is the difference between HDPE and polyethylene
Answered By: Gordon Brown Date: created: Jan 21 2023
High-density polyethylene and low-density polyethylene are two common polyethylenes with differing structures but similar properties. HDPE has a linear structure and is opaque, while LDPE is a transparent branched version of PE.
Asked By: Jake Anderson Date: created: Sep 15 2022
Why does HDPE have a higher tensile strength than LDPE
Answered By: Alejandro Henderson Date: created: Sep 15 2022
This results in a plastic that is softer and more flexible, but which also has lower tensile strength. The polymer chains in HDPE, on the other hand, are more linear. They pack closer together, resulting in greater intermolecular forces and a more "crystalline" structure. HDPE has greater tensile strength than LDPE.
Asked By: Noah Butler Date: created: Nov 05 2022
Why is HDPE high density
Answered By: Bernard Patterson Date: created: Nov 05 2022
Although the density of HDPE is only marginally higher than that of low-density polyethylene, HDPE has little branching, giving it stronger intermolecular forces and tensile strength (38 MPa versus 21 MPa) than LDPE. The difference in strength exceeds the difference in density, giving HDPE a higher specific strength.
Asked By: Isaiah Coleman Date: created: Apr 15 2022
What is the main difference between HDPE and LDPE
Answered By: Angel Turner Date: created: Apr 17 2022
As its name suggests, low-density polyethylene (LDPE) has a lower density, strength, and temperature resistance. Meanwhile, high-density polyethylene (HDPE) is characterized by higher specific strength and heat resistance.
Asked By: Hayden Washington Date: created: Apr 06 2022
What is the tensile strength of LDPE
Answered By: Jesus Coleman Date: created: Apr 08 2022
The LDPE films are characterized by the tensile strength no lower than 10 MPa and their elongation at break is no less than 200% [10].
Asked By: Clifford Coleman Date: created: Nov 14 2022
What does it mean to have a low tensile strength
Answered By: Charles Edwards Date: created: Nov 14 2022
Brittle materials exhibit low tensile strength and may fracture or break instead of being deformed when under tensile stress. Ductile materials exhibit high tensile. strength and low compressive strength, making them capable of being drawn into. wires.
Asked By: Martin Bailey Date: created: Mar 02 2022
Which of the following has the lowest tensile strength
Answered By: Horace Anderson Date: created: Mar 03 2022
Rubber has very low tensile strength (15 MPa). Brass has high UTS 550 MPa and glass has UTS 33 MPa.
Asked By: Gabriel Simmons Date: created: Feb 01 2022
What are the PROPERTIES of LDPE
Answered By: Elijah Wright Date: created: Feb 01 2022
PROPERTIES. Semi-rigid, translucent, very tough, weatherproof, good chemical resistance, low water absorption, easily processed by most methods, low cost.
Asked By: Gavin Sanchez Date: created: Apr 06 2022
Why does HDPE has higher density and strength than LDPE
Answered By: Neil Kelly Date: created: Apr 07 2022
This weakens the intermolecular forces in the polymer. That is why HDPE have a higher strength-to-density ratio than LDPE with increased tensile strength. The varying uses of LDPE and HDPE are based on this fundamental structural difference, among many other properties.
Asked By: Isaiah Robinson Date: created: Dec 19 2021
What is the tensile strength of HDPE
Answered By: Cody Ramirez Date: created: Dec 21 2021
HDPE (High Density Polyethylene) Typical Properties
| Physical Properties | English | |
|---|---|---|
| Tensile Strength, Ultimate | 3480 – 6530 psi | 30 MPa |
| Tensile Strength, Yield | 2180 – 4350 psi | 21.9 MPa |
| Elongation at Break | 500 – 1000 % | 840% |
| Tensile Modulus | 116 – 144 ksi | 0.86 GPa |
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