{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,8]],"date-time":"2026-07-08T02:25:52Z","timestamp":1783477552827,"version":"3.55.0"},"reference-count":58,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2025,6,27]],"date-time":"2025-06-27T00:00:00Z","timestamp":1750982400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>This paper aimed to evaluate the effect of cross-linking temperature on the rheological, mechanical, and thermal properties of CR\/BR compositions cross-linked with zinc oxide, iron(III) oxide, or copper(II) oxide. Properties of CR\/BR compounds were studied at four temperatures: 140, 160, 180, and 200 \u00b0C. The lowest activation energy of vulcanization was shown by blends cross-linked with ZnO, and the highest activation energy of vulcanization was shown by samples with Fe2O3. Blends cured with ZnO or Fe2O3 showed higher cross-linking activity than CuO. Higher temperatures enhanced the degree of cross-linking in the CR\/BR composite cured with ZnO or CuO but slightly reduced it for the CR\/BR\/Fe2O3 vulcanizates. The highest tensile strength was observed for the CR\/BR\/Fe2O3 product. However, compositions cured with ZnO exhibited the best aging resistance. The CR\/BR compounds cured with ZnO at high temperatures had the highest tear strength (16.8 N\/mm), while samples containing CuO as a curing agent showed declining tear strength with temperature. DSC confirmed a single glass transition (~36 \u00b0C), indicating good elastomers dispersion. Infrared and SEM analyses confirmed effective cross-linking and blend compatibility.<\/jats:p>","DOI":"10.3390\/molecules30132780","type":"journal-article","created":{"date-parts":[[2025,6,30]],"date-time":"2025-06-30T11:37:51Z","timestamp":1751283471000},"page":"2780","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Chloroprene and Butadiene Rubber (CR\/BR) Blends Cross-Linked with Metal Oxides: INFLUENCE of Vulcanization Temperature on Their Rheological, Mechanical, and Thermal Properties"],"prefix":"10.3390","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7720-1773","authenticated-orcid":false,"given":"Aleksandra","family":"Smejda-Krzewicka","sequence":"first","affiliation":[{"name":"Institute of Polymer and Dye Technology, Faculty of Chemistry, Lodz University of Technology, Stefanowskiego Street 16, 90-537 Lodz, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-5732-5306","authenticated-orcid":false,"given":"Konrad","family":"Mrozowski","sequence":"additional","affiliation":[{"name":"Institute of Polymer and Dye Technology, Faculty of Chemistry, Lodz University of Technology, Stefanowskiego Street 16, 90-537 Lodz, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,6,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Datta, S. 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