文献类型：期刊文献

英文题名：Synergistic Enhancement of Rigidity and Toughness in Polydicyclopentadiene Materials via Copolymerization With Tricyclopentadiene, Cyclooctene or α-Pinene

作者：Huan, Chenshu[1];Li, Xuan[1];Chang, Jing[1];He, Xuelian[1]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai, Peoples R China

年份：2026

外文期刊名：POLYMER ENGINEERING AND SCIENCE

收录：;EI(收录号：20262921111369);Scopus(收录号：2-s2.0-105044645465);WOS:【SCI-EXPANDED(收录号:WOS:001819806700001)】；

基金：This work was financially supported by the National Natural Science Foundation of China, 22278141.

语种：英文

外文关键词：alpha-pinene; copolymerize; elongation at break; flexural strength; polydicyclopentadiene; TCPD; tensile strength

摘要：Polydicyclopentadiene (PDCPD), obtained through the ring-opening metathesis polymerization (ROMP) of Dicyclopentadiene (DCPD), benefits from a highly cross-linked rigid framework that provides superior impact resistance; however, it struggles to meet the increasingly demanding mechanical performance requirements of certain emerging fields. To enhance the performance of PDCPD materials, this study prepared poly (DCPD/TCPD) and poly (DCPD/alpha-pinene) copolymers via ROMP, incorporating tricyclopentadiene (TCPD) as a secondary monomer and using alpha-pinene for comparison. The introduction of these secondary monomers effectively increased the rigidity of PDCPD. Specifically, with the addition of 5% alpha-pinene, the tensile strength of PDCPD increased from 52.1 to 58.9 MPa; similarly, the addition of 10% TCPD raised the tensile strength to 61.3 MPa. To achieve a synergistic optimization of stiffness and toughness, cyclooctene (COE) was further introduced as a third monomer. The resulting ternary copolymers exhibited superior rigidity and toughness compared to pure PDCPD. When the DCPD/TCPD/COE ratio was 80/10/10, the poly (DCPD/TCPD/COE) composite achieved a tensile strength of 55.1 MPa, a flexural strength of 91.3 MPa, an elongation at break of 66.3%, and an impact strength of 6.8 kJ/m2.