Lee, Hyeseong Kim, Yoon Sang Choi, Woo Hyuk Yun, Deok Woo Lee, Jaeyong Song, Jong Man Kim, Seungho Kim, Jaewoo Kim, Seong Yun 2024-01-19T15:03:21Z 2024-01-19T15:03:21Z 2021-09-04 2021-04 1359-835X https://pubs.kist.re.kr/handle/201004/117220 Self-reinforced composites (SRCs) are easy to recycle because the matrix and reinforcement are composed of the same material. However, the narrow processing window makes it difficult to optimize the relationship between the internal structure and the mechanical properties. In this study, we adopted a strategy to control the melting temperature and flowability of the matrix to expand the processing window of a polypropylene (PP)-based SRC. To experiment with this strategy, 1500% drawn PP fiber was used as the reinforcement, while a PP/low-density polyethylene (LDPE) blend, PP/ethylene copolymer, or PP/ethylene/butene terpolymer were adopted as the matrix. The tensile strength of the PP-based SRC prepared by applying the copolymer matrix under optimized processing conditions was improved by 22.3%, as compared to that of the SRC prepared using the raw PP matrix. As a result, the design rule used to obtain optimum processing conditions for SRC production with outstanding mechanical properties was proposed. English ELSEVIER SCI LTD Processing temperature window design via controlling matrix composition for polypropylene-based self-reinforced composites Article 10.1016/j.compositesa.2021.106301 1 COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, v.143 COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING 143 scie scopus 000621641300001 2-s2.0-85100410035 Engineering, Manufacturing Materials Science, Composites Engineering Materials Science Article Self-reinforced composites Polymer-matrix composites (PMCs) Mechanical properties Hot compaction