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Rapid Commun."],"published-print":{"date-parts":[[2026,8]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Environmental stress cracking resistance (ESCR) remains a critical limitation for high\u2010density polyethylene (HDPE), as conventional strategies to enhance ESCR often compromise mechanical performance or melt processability. Herein, a dynamic covalent network is constructed in HDPE via reactive melt blending using a disulfide\u2010containing bismaleimide (DTBMI) crosslinker. Radical activation enables DTBMI to capture HDPE macroradicals, forming a dynamically crosslinked network without sacrificing thermoplastic processability. The introduction of 2 phr DTBMI significantly enhances ESCR, with the failure time (f\n                    <jats:sub>50<\/jats:sub>\n                    ) increasing by fourfold compared to neat HDPE, while tensile strength, fracture energy, and strain\u2010hardening behavior are simultaneously improved. Rheological analysis reveals a pronounced increase in low\u2010frequency modulus and effective network density, indicating strong constraints on long\u2010time chain relaxation, whereas high\u2010frequency viscosity remains comparable to that of neat HDPE, preserving melt flow. Fracture morphology after ESCR testing shows pronounced fibrillation, evidencing enhanced stress redistribution and suppressed chain disentanglement. These results demonstrate that time\u2010scale\u2010selective dynamic crosslinking offers an effective strategy to reconcile ESCR, mechanical robustness, and processability in HDPE, providing new insights for the design of durable polyolefin materials.\n                  <\/jats:p>","DOI":"10.1002\/marc.202500967","type":"journal-article","created":{"date-parts":[[2026,5,24]],"date-time":"2026-05-24T04:10:31Z","timestamp":1779595831000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Synergistic Enhancement of Environmental Stress Crack Resistance and Mechanical Properties of HDPE via Reactive Blending\u2010Induced Disulfide\u2010Linked Covalent Networks"],"prefix":"10.1002","volume":"47","author":[{"given":"Yue","family":"Chen","sequence":"first","affiliation":[{"name":"The Key Laboratory of Synthetic and Biological Colloids School of Chemical and Material Engineering Ministry of Education Jiangnan University  Wuxi China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei","family":"Tian","sequence":"additional","affiliation":[{"name":"The Key Laboratory of Synthetic and Biological Colloids School of Chemical and Material Engineering Ministry of Education Jiangnan University  Wuxi China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yongjun","family":"Zhu","sequence":"additional","affiliation":[{"name":"The Key Laboratory of Synthetic and Biological Colloids School of Chemical and Material Engineering Ministry of Education Jiangnan University  Wuxi China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qiang","family":"Xu","sequence":"additional","affiliation":[{"name":"The Key Laboratory of Synthetic and Biological Colloids School of Chemical and Material Engineering Ministry of Education Jiangnan University  Wuxi 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