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Thermomechanical characteristics of HDPE/CaCO3/ LDPE-g-MA composites for melt-mixing conditions

Young Jun Ahn
청정에너지연구소 (Clean-Energy Research Institute)|2017.02|Journal of Ceramic Processing Research|제18권 제2호|pp. 127-136|DOI 10.36410/jcpr.2017.18.2.127

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키워드

Hybrid compositesPolymer-matrix composites (PMCs)Thermomechanical properties
주제분류재료공학

초록

The novel characteristics of high-density polyethylene (HDPE)/calcium carbonate (CaCO3)/maleic anhydride grafted lowdensitypolyethylene (LDPE-g-MA) composites were examined in relation to the reaction temperature and the amount ofLDPE-g-MA for melt mixing conditions. HDPE/CaCO3/LDPE-g-MA composites were prepared by melt mixing. The tensilestrength of the composites decreased with increase in CaCO3, but thermogravimetric analysis (TGA) revealed that thecomposites had higher thermal stability than pure HDPE. Differential scanning calorimetry (DSC) analysis showed that thecrystallinity (Xc) and crystallization entropy (ΔSc) of the composites decreased with increase in temperature and the amountof LDPE-g-MA. These results were consistent with the activation energy (Ea) derived from the Kissinger method. This studydemonstrates that the composites were influenced by the temperature and the amount of LDPE-g-MA. In addition, a certainamount of CaCO3 is expected to act as a stable nucleating agent, which thus accelerates the crystallization rate.

Abstract

The novel characteristics of high-density polyethylene (HDPE)/calcium carbonate (CaCO3)/maleic anhydride grafted lowdensitypolyethylene (LDPE-g-MA) composites were examined in relation to the reaction temperature and the amount ofLDPE-g-MA for melt mixing conditions. HDPE/CaCO3/LDPE-g-MA composites were prepared by melt mixing. The tensilestrength of the composites decreased with increase in CaCO3, but thermogravimetric analysis (TGA) revealed that thecomposites had higher thermal stability than pure HDPE. Differential scanning calorimetry (DSC) analysis showed that thecrystallinity (Xc) and crystallization entropy (ΔSc) of the composites decreased with increase in temperature and the amountof LDPE-g-MA. These results were consistent with the activation energy (Ea) derived from the Kissinger method. This studydemonstrates that the composites were influenced by the temperature and the amount of LDPE-g-MA. In addition, a certainamount of CaCO3 is expected to act as a stable nucleating agent, which thus accelerates the crystallization rate.

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