20.500.12556/DiRROS-28852 MWCNT-driven modulation of thermal and flow properties in PTT/PP polymer systems The thermal and viscoelastic performance of polymer blends is decisive for their deployment in advanced engineering and electronic applications. Here, we report a systematic investigation of immiscible poly(trimethylene terephthalate) (PTT)/polypropylene (PP) blends reinforced with multiwalled carbon nanotubes (MWCNTs). While the incorporation of MWCNTs did not markedly alter the thermal degradation profiles, it significantly modified the viscoelastic behavior by inducing a constrained polymer region within the PTT phase. Quantitative analysis of filler dispersion effectiveness, entanglement density, reinforcing efficiency, and constrained volume provides new insights into nanotube–matrix interactions. Rheological results revealed a terminal-to-nonterminal transition with increasing nanotube content, confirming percolated network formation at low filler loadings. These findings establish clear structure–property correlations that extend beyond qualitative descriptions, offering a predictive framework for tailoring immiscible blends through nanofiller engineering. Such insights highlight the potential of PTT/PP/MWCNT systems in functional applications, including lightweight structural components and conductive composites for electronics. polymer blends thermal properties viscoelastic properties viskoelastične lastnosti true false true The Royal Society of Chemistry Združeno kraljestvo Angleški jezik Slovenski jezik © 2026 The Author(s). Neznano 2026-04-09 13:00:22 2026-04-09 13:00:22 2026-04-10 03:55:40 0000-00-00 00:00:00 2026 0 0 Nasl. z nasl. zaslona; Soavtor iz Slovenije: Miroslav Huskić; Opis vira z dne 7. 4. 2026; str. 393-407 iss. 1 Vol. 4 Jan. 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2025-10-14 2025-11-25 2025-12-16 54 2755-371X 10.1039/D5LP00324E 274380547 https://pubs.rsc.org/en/content/articlelanding/2026/lp/d5lp00324e 1 53356b62-3403-11f1-b941-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=42998 RAZ_Ramachandran_Ajitha_A._2026.pdf RAZ_Ramachandran_Ajitha_A._2026.pdf 1 C3C7B7803977D56D54EEAB0B96E8DCD1 b19e141a3ee14a37bdd6d5ff04fa7a3399aa9ffd22752732bb11fa2a935be684 a5917115-3403-11f1-b941-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=43000 Institut Jožef Stefan 0 0 0