2020
DOI: 10.1002/app.49525
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Polypropylene/phosphazene nanotube nanocomposites: Thermal, mechanical, and flame retardation studies

Abstract: In this study, flame retardant polypropylene (PP) nanocomposites with superior mechanical performance have been developed using amine‐functionalized phosphazene nanotubes (APZS, 1–10 wt%) through melt‐blending method. Polypropylene‐graft‐maleic anhydride was used as the compatibilizer to attain effective interaction between the nanofiller and the PP matrix. The characterization of amine‐functionalized phosphazene nanotubes (APZS) using solid‐state nuclear magnetic resonance (NMR), X‐ray photoelectron spectrosc… Show more

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Cited by 10 publications
(10 citation statements)
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“…In Figure 5 , the effect of this complex of radicals O-O-AsH-TiCl 4 -MgCl 2 is shown on the beginning of the degradation of PP, which consists of the abstraction of hydrogen in the PP-virgin, generating a stable tertiary radical, which, when reacting with a molecule O 2 , will produce a Peroxy-PP-virgin radical, which extracts hydrogen from a neighboring virgin-PP chain, thereby forming the virgin-PP-Hydroperoxide. The latter, after a homolytic rupture, will give rise to the Alkoxy-PP-Virgin radical [ 53 , 54 , 55 , 56 ]. The radical complex of O-O-ash-tiCl 4 -MgCl 2, after the abstraction of hydrogen, forms the peroxy complex H-O-O-AsH-TiCl 4 -MgCl 2 that, by hemolysis, forms the radical O-AsH-TiCl 4 -MgCl 2 .…”
Section: Resultsmentioning
confidence: 99%
“…In Figure 5 , the effect of this complex of radicals O-O-AsH-TiCl 4 -MgCl 2 is shown on the beginning of the degradation of PP, which consists of the abstraction of hydrogen in the PP-virgin, generating a stable tertiary radical, which, when reacting with a molecule O 2 , will produce a Peroxy-PP-virgin radical, which extracts hydrogen from a neighboring virgin-PP chain, thereby forming the virgin-PP-Hydroperoxide. The latter, after a homolytic rupture, will give rise to the Alkoxy-PP-Virgin radical [ 53 , 54 , 55 , 56 ]. The radical complex of O-O-ash-tiCl 4 -MgCl 2, after the abstraction of hydrogen, forms the peroxy complex H-O-O-AsH-TiCl 4 -MgCl 2 that, by hemolysis, forms the radical O-AsH-TiCl 4 -MgCl 2 .…”
Section: Resultsmentioning
confidence: 99%
“…Meanwhile, the obtained composites exhibit better flame retardancy than other flame retardant resins according to the LOI test. [ 71,72 ] The semi‐empirical equation described by Van Krevelen [ 73 ] relates the thermogravimetric char yield to the theoretical LOI according to the following Equation (1): LOIgoodbreak=17.5goodbreak+0.4CR Where CR indicates the char yield at 850°C. The experimental and theoretical LOI values of PZS/PTU‐1 and PZS/PTU‐2 are both larger than those of pure PTU, indicating that PZS increase the fire resistance of PTU.…”
Section: Resultsmentioning
confidence: 99%
“…This is mainly due to the formation of crosslinks between the polymer matrix and the flame retardant particles. The interactions inhibited the rearrangement and reorientation of part of the movement units in the polymer matrix during the stretching process 55,56 . But the addition of La@DDP alone has slightly reduced Young's modulus of PLA.…”
Section: Resultsmentioning
confidence: 99%
“…The interactions inhibited the rearrangement and reorientation of part of the movement units in the polymer matrix during the stretching process. 55,56 But the addition of La@DDP alone has slightly reduced Young's modulus of PLA. The reason may be that the aggregation of La@DDP weakens the interfacial adhesion and consequently reducing the Young's modulus.…”
Section: Mechanical Propertiesmentioning
confidence: 99%