TY  - JOUR
AU  - Huynh, Duc Duy
AU  - Nguyen, Hoang Phuc
AU  - Nguyen, Tran Quoc Thang
AU  - Pham, Thi Hong Nga
AU  - Pham, Quan Anh
AU  - Duong, Thi Van Anh
AU  - Hoang, Van Huong
AU  - Vo, Xuan Tien
AU  - Nguyen, Vinh Tien
PY  - 2025
DA  - 2025/09/24
TI  - Effect of EVA on the Unnotched Impact Toughness of PP/HDPE/EVA Blends
JO  - Recent Progress in Materials
SP  - 015
VL  - 07
IS  - 03
AB  - Beverage bottle caps are usually made from two primary materials: PP and HDPE. In this study, the evaluation criteria were the unnotched impact toughness and the microstructure of PP/HDPE/EVA samples produced by injection molding. The samples were tested according to ASTM D256. PP/HDPE/EVA blends were prepared with various ratios: 47.5/47.5/5, 45/45/10, 42.5/42.5/15, 40/40/20, and 37.5/37.5/25. The results showed that adding EVA to the PP/HDPE blend significantly increased the unnotched impact toughness: from 84.03 kJ/m2 (PP/HDPE/5% EVA) to 85.06 kJ/m2 (PP/HDPE/10% EVA), then decreased to 70.3 kJ/m2 (PP/HDPE/15% EVA), followed by an increase to 83.32 kJ/m2 (PP/HDPE/20% EVA) and 89.42 kJ/m2 (PP/HDPE/25% EVA). The discrepancy in value between the samples with the highest and lowest EVA content was 19.12 kJ/m2. Overall, as the EVA content increased, the unnotched impact toughness also tended to increase. However, the sample with PP/HDPE/15% EVA showed a noticeable decrease.
SN  - 2689-5846
UR  - https://doi.org/10.21926/rpm.2503015
DO  - 10.21926/rpm.2503015
ID  - Huynh2025
ER  -