Transparent, intrinsically fire-safe yet impact-resistant poly(carbonates-b-siloxanes) containing Schiff-base and naphthalene-sulfonate
Article
Article Title | Transparent, intrinsically fire-safe yet impact-resistant poly(carbonates-b-siloxanes) containing Schiff-base and naphthalene-sulfonate |
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ERA Journal ID | 4724 |
Article Category | Article |
Authors | Sai, Ting, Ye, Xiaodi, Wang, Bingtao, Guo, Zhenghong, Li, Juan, Fang, Zhengping and Huo, Siqi |
Journal Title | Journal of Materials Science and Technology |
Year | 2024 |
Publisher | Elsevier |
Place of Publication | China |
ISSN | 1005-0302 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jmst.2024.11.023 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S1005030224010983 |
Abstract | A series of transparent, intrinsically flame-retardant, and impact-resistant poly(carbonates-b-siloxanes) were synthesized by incorporating Schiff-base modified polysiloxanes (DMS-Schiff) and naphthalene-sulfonate units into the polycarbonate (PC) chain. In addition to high transparency, the resultant copolymers (SS-co-PC5, SS-co-PC9, SS-co-PC14, and SS-co-PC20) exhibited remarkable improvements in fire safety and mechanical performance. Compared to pure PC, these copolymers demonstrated significantly enhanced limiting oxygen index (LOI, up to 34.5%) and a UL-94 V-0 rating under a thickness of only 1.6 mm. The incorporation of the polysiloxane blocks not only improved flame retardancy but also enhanced the impact strength, with SS-co-PC9 showing a 48% increase in elongation at break and a 38% rise in impact toughness compared to pure PC. In addition, SS-co-PC9 presented high mechanical strength. The synergistic effects between the naphthalene-sulfonate and polysiloxane blocks, along with the well-controlled polysiloxane phase separation (sulfonate units enabled lower processing viscosity of copolymers), led to superior comprehensive performance. These findings provide a promising pathway to create high-performance copolycarbonates for real-world applications. |
Keywords | Polycarbonate copolymer; Microphase separation; Fire safety; Transparency; Impact resistance |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401609. Polymers and plastics |
Byline Affiliations | NingboTech University, China |
Zhejiang Sci-Tech University, China | |
School of Engineering | |
Centre for Future Materials |
https://research.usq.edu.au/item/zqx1z/transparent-intrinsically-fire-safe-yet-impact-resistant-poly-carbonates-b-siloxanes-containing-schiff-base-and-naphthalene-sulfonate
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