Measurement examples of DSC (Differential Scanning Calorimetry)
Comparing thermal properties with DSC! We will discuss the impact of type identification and the state of polymer molecular chains on material properties!
Polyethylene (PE) comes in several types with different material properties depending on the length and number of its side chain branches. From the melting peak of crystalline polyethylene, the melting point and crystallinity were measured using DSC and compared for each type of polyethylene. LDPE, which has many long side chains and is less dense, resulted in a low melting point and low crystallinity, while HDPE, which tends to have a denser molecular chain, showed high values for both melting point and crystallinity. Additionally, LLDPE, which has many relatively short side chains and is easier to densify than LDPE, exhibited intermediate values for melting point and crystallinity between LDPE and HDPE. [Types of Polyethylene] - LDPE (Low-Density Polyethylene): Low rigidity and high flexibility - LLDPE (Linear Low-Density Polyethylene): Tougher than LDPE but less processable - HDPE (High-Density Polyethylene): High rigidity, excellent tensile strength, impact strength, and hardness *For more details, please refer to the PDF document or feel free to contact us.
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【Results】 - LDPE, which has many long side chains and is less likely to have dense molecular chains, has a low melting point and low crystallinity. - HDPE, which has fewer side chains and is more likely to have dense molecular chains, shows high values for both melting point and crystallinity. - LLDPE, which has many relatively short side chains and is more likely to be dense than LDPE, shows intermediate values for melting point and crystallinity between LDPE and HDPE.
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For more details, please refer to the PDF document or feel free to contact us.
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Measurement example of DSC (Differential Scanning Calorimetry)
Polyethylene (PE) has several types and different material properties depending on the length and number of its side chain branches. From the melting peak of crystalline polyethylene, we measured the melting point and crystallinity using DSC and compared them for each type of polyethylene. LDPE, which has many long side chains and is less dense, resulted in a low melting point and low crystallinity, while HDPE, which tends to be denser, showed high values for both melting point and crystallinity. Additionally, LLDPE, which has many relatively short side chains and is more likely to be dense than LDPE, exhibited intermediate values for both melting point and crystallinity between LDPE and HDPE. [Types of Polyethylene] ■ LDPE (Low-Density Polyethylene): Low rigidity and high flexibility ■ LLDPE (Linear Low-Density Polyethylene): Tougher than LDPE but has inferior processability ■ HDPE (High-Density Polyethylene): High rigidity and excellent tensile strength, impact strength, and hardness
