Year: 2025
Type: article
Abstract: 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.
Source: Recent Progress in Materials
DOI: 10.21926/rpm.2503015
Authors: Duc Duy Huynh, Hoang Phuc Nguyen, Tran Quoc Thang Nguyen, Thi Hong Nga Pham, Quan Anh Pham, Thi Van Anh Duong, Van Huong Hoang, Xuan Tien Vo, Vinh Tien Nguyen
Language: English
Subfield: Polymers and Plastics
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4414521320