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  1. Article ; Online: Smell of the sea on a not-so-faraway planet?

    Wei Wang / Zewen Jiang

    The Innovation, Vol 4, Iss 6, Pp 100523- (2023)

    2023  

    Keywords Science (General) ; Q1-390
    Language English
    Publishing date 2023-11-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Flame Retardancy and Mechanism of Novel Phosphorus-Silicon Flame Retardant Based on Polysilsesquioxane

    Shengjie Zhu / Weiguang Gong / Ji Luo / Xin Meng / Zhong Xin / Jie Wu / Zewen Jiang

    Polymers, Vol 11, Iss 8, p

    2019  Volume 1304

    Abstract: A novel phosphorus-silicon flame retardant (P 5 PSQ) was prepared by bonding phosphate to silicon-based polysilsesquioxane (PSQ) and used as flame retardant of poly (lactic acid) (PLA). The results show that PLA with 10 wt % P 5 PSQ has a limiting oxygen ...

    Abstract A novel phosphorus-silicon flame retardant (P 5 PSQ) was prepared by bonding phosphate to silicon-based polysilsesquioxane (PSQ) and used as flame retardant of poly (lactic acid) (PLA). The results show that PLA with 10 wt % P 5 PSQ has a limiting oxygen index (LOI) 24.1%, the peak heat release rate (PHRR) and total heat release (THR) of PLA decrease 21.8% and 25.2% compared to neat PLA in cone calorimetric test, indicating that P 5 PSQ shows better flame retardancy in comparison to PSQ. Furthermore, the study for the morphology and composition of carbon residue after the combustion of PLA and the gas release of PLA during combustion illustrate that P 5 PSQ has flame retardancy in condensed phase and gas phase simultaneously. In condensed phase, phosphorus from phosphate promotes the formation of more stable and better carbon layer containing Si and P, which inhibits the transfer of heat and oxygen in the combustion. In gas phase, the phosphate in P 5 PSQ emits phosphorus-containing compound that can restrain the release of C−O containing products, which may have effective flame retardancy for PLA in gas phase to a certain extent. In one word, P 5 PSQ is denoted as a good phosphorus-silicon synergistic flame-retardant.
    Keywords PLA ; flame retardancy ; phosphorus-silicon synergism ; mechanism ; Organic chemistry ; QD241-441
    Subject code 290
    Language English
    Publishing date 2019-08-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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