Graphene-supported dual-site catalysts for preparing self-reinforcing polyethylene reactor blends containing UHMWPE nanoplatelets and in situ UHMWPE shish-kebab nanofibers

The catalytic ethylene polymerization on dual-site catalysts, supported on functionalized graphene, enables nanostructure formation in polyethylene reactor blends by in situ formation of uniformly dispersed ultrahigh molecular weight polyethylene (UHMWPE) nanoplatelets and in situ formed aligned UHM...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Stürzel, Markus Roland (VerfasserIn) , Thomann, Yi (VerfasserIn) , Enders, Markus (VerfasserIn) , Mülhaupt, Rolf (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: July 14, 2014
In: Macromolecules
Year: 2014, Jahrgang: 47, Heft: 15, Pages: 4979-4986
ISSN:1520-5835
DOI:10.1021/ma500769g
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/ma500769g
Verlag, lizenzpflichtig, Volltext: https://pubs.acs.org/doi/10.1021/ma500769g
Volltext
Verfasserangaben:Markus Stürzel, Yi Thomann, Markus Enders, and Rolf Mülhaupt

MARC

LEADER 00000caa a2200000 c 4500
001 1731763689
003 DE-627
005 20230427102050.0
007 cr uuu---uuuuu
008 200914s2014 xx |||||o 00| ||eng c
024 7 |a 10.1021/ma500769g  |2 doi 
035 |a (DE-627)1731763689 
035 |a (DE-599)KXP1731763689 
035 |a (OCoLC)1341359487 
040 |a DE-627  |b ger  |c DE-627  |e rda 
041 |a eng 
084 |a 30  |2 sdnb 
100 1 |a Stürzel, Markus Roland  |e VerfasserIn  |0 (DE-588)1072433141  |0 (DE-627)827655142  |0 (DE-576)433859296  |4 aut 
245 1 0 |a Graphene-supported dual-site catalysts for preparing self-reinforcing polyethylene reactor blends containing UHMWPE nanoplatelets and in situ UHMWPE shish-kebab nanofibers  |c Markus Stürzel, Yi Thomann, Markus Enders, and Rolf Mülhaupt 
264 1 |c July 14, 2014 
300 |a 8 
336 |a Text  |b txt  |2 rdacontent 
337 |a Computermedien  |b c  |2 rdamedia 
338 |a Online-Ressource  |b cr  |2 rdacarrier 
500 |a Gesehen am 14.09.2020 
520 |a The catalytic ethylene polymerization on dual-site catalysts, supported on functionalized graphene, enables nanostructure formation in polyethylene reactor blends by in situ formation of uniformly dispersed ultrahigh molecular weight polyethylene (UHMWPE) nanoplatelets and in situ formed aligned UHMWPE shish-kebab nanofibers. For tailoring bimodal molar mass distributions, the quinolylsilylcyclopentadienylchromium(III) complex (Cr-1), producing UHMWPE with Mw > 3 × 106 g mol-1, is blended together with bisiminopyridine complexes of either chromium(III) (CrBIP), producing polyethylene (PE) wax (2 × 103 g mol-1), or iron(II) (FeBIP), producing PE with Mw = 2.0 × 105 g mol-1. Hence, the FeBIP/Cr-1 and CrBIP/Cr-1 molar ratios govern the PE/UHMWPE weight ratio without affecting the average molar mass of the individual PE fractions. In sharp contrast to conventional UHMWPE/PE reactor blends, the UHMWPE content is substantially increased up to 17 wt % without impairing melt processing. In the case of graphene-supported FeBIP/Cr-1, SEM and TEM analysis reveal that UHMWPE nanoplatelets are formed during polymerization. This is attributed to graphene-mediated mesoscopic shape replication. During injection molding, the UHMWPE nanoplatelets are transformed into aligned UHMWPE shish-kebab nanofibers, thus enabling efficient polyethylene matrix reinforcement. 
700 1 |a Thomann, Yi  |e VerfasserIn  |4 aut 
700 1 |a Enders, Markus  |e VerfasserIn  |0 (DE-588)1019871857  |0 (DE-627)691043280  |0 (DE-576)358992818  |4 aut 
700 1 |a Mülhaupt, Rolf  |e VerfasserIn  |4 aut 
773 0 8 |i Enthalten in  |t Macromolecules  |d Washington, DC : Soc., 1968  |g 47(2014), 15, Seite 4979-4986  |w (DE-627)302719199  |w (DE-600)1491942-4  |w (DE-576)090855191  |x 1520-5835  |7 nnas  |a Graphene-supported dual-site catalysts for preparing self-reinforcing polyethylene reactor blends containing UHMWPE nanoplatelets and in situ UHMWPE shish-kebab nanofibers 
773 1 8 |g volume:47  |g year:2014  |g number:15  |g pages:4979-4986  |g extent:8  |a Graphene-supported dual-site catalysts for preparing self-reinforcing polyethylene reactor blends containing UHMWPE nanoplatelets and in situ UHMWPE shish-kebab nanofibers 
856 4 0 |u https://doi.org/10.1021/ma500769g  |x Verlag  |x Resolving-System  |z lizenzpflichtig  |3 Volltext 
856 4 0 |u https://pubs.acs.org/doi/10.1021/ma500769g  |x Verlag  |x Resolving-System  |z lizenzpflichtig  |3 Volltext 
951 |a AR 
992 |a 20200914 
993 |a Article 
994 |a 2014 
998 |g 1019871857  |a Enders, Markus  |m 1019871857:Enders, Markus  |d 120000  |d 120200  |e 120000PE1019871857  |e 120200PE1019871857  |k 0/120000/  |k 1/120000/120200/  |p 3 
999 |a KXP-PPN1731763689  |e 3752819650 
BIB |a Y 
SER |a journal 
JSO |a {"recId":"1731763689","language":["eng"],"type":{"media":"Online-Ressource","bibl":"article-journal"},"note":["Gesehen am 14.09.2020"],"person":[{"display":"Stürzel, Markus Roland","roleDisplay":"VerfasserIn","role":"aut","family":"Stürzel","given":"Markus Roland"},{"display":"Thomann, Yi","roleDisplay":"VerfasserIn","role":"aut","family":"Thomann","given":"Yi"},{"roleDisplay":"VerfasserIn","display":"Enders, Markus","role":"aut","family":"Enders","given":"Markus"},{"family":"Mülhaupt","given":"Rolf","roleDisplay":"VerfasserIn","display":"Mülhaupt, Rolf","role":"aut"}],"title":[{"title_sort":"Graphene-supported dual-site catalysts for preparing self-reinforcing polyethylene reactor blends containing UHMWPE nanoplatelets and in situ UHMWPE shish-kebab nanofibers","title":"Graphene-supported dual-site catalysts for preparing self-reinforcing polyethylene reactor blends containing UHMWPE nanoplatelets and in situ UHMWPE shish-kebab nanofibers"}],"relHost":[{"title":[{"subtitle":"web edition","title":"Macromolecules","title_sort":"Macromolecules"}],"disp":"Graphene-supported dual-site catalysts for preparing self-reinforcing polyethylene reactor blends containing UHMWPE nanoplatelets and in situ UHMWPE shish-kebab nanofibersMacromolecules","note":["Gesehen am 18.11.08"],"type":{"media":"Online-Ressource","bibl":"periodical"},"recId":"302719199","language":["eng"],"pubHistory":["1.1968 -"],"part":{"extent":"8","volume":"47","text":"47(2014), 15, Seite 4979-4986","issue":"15","pages":"4979-4986","year":"2014"},"name":{"displayForm":["American Chemical Society"]},"origin":[{"publisherPlace":"Washington, DC","dateIssuedDisp":"1968-","publisher":"Soc.","dateIssuedKey":"1968"}],"id":{"issn":["1520-5835"],"zdb":["1491942-4"],"eki":["302719199"]}}],"physDesc":[{"extent":"8 S."}],"name":{"displayForm":["Markus Stürzel, Yi Thomann, Markus Enders, and Rolf Mülhaupt"]},"id":{"eki":["1731763689"],"doi":["10.1021/ma500769g"]},"origin":[{"dateIssuedDisp":"July 14, 2014","dateIssuedKey":"2014"}]} 
SRT |a STUERZELMAGRAPHENESU1420