Journal Article

FZJ-2015-01160

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Interphases in Polymer Solid-Contacts and Nanocomposites Probed by Positron Annihilation Lifetime Spectroscopy

Ohrt, C. ; Koschine, T. ; Harms, S. ; Faupel, F. ; Rätzke, K. (Collaboration Author) ; Egger, W. ; Ravelli, L. ; Willner, L.FZJ* ; Schneider, G. J. (Corresponding Author)FZJ*

2014
Taylor & Francis London [u.a.] Taylor & Francis

This record in other databases:  

Please use a persistent id in citations: doi:10.1080/1539445X.2014.957835

Abstract: At polymer-solid contacts with thermoplastic polymers, the chain characteristics can deviate from the bulk on a length-scale of several nanometer in the so-called interphase. Such an interphase depends on the interaction between respective macromolecule and substrate, and affects the free volume in the polymer. Here, we review our experiments on the characterization of the free volume by positron lifetime spectroscopy at planar and curved interfaces. For Teflon AF on silicon, we identify a layer of increased density, corresponding to an interphase width of some 10 nm. PEP based nanocomposites with functionalized silica show no interphase, whereas for functionalized POSS an interphase is detected.

Keyword(s): Chemical Reactions and Advanced Materials (1st) ; Key Technologies (1st) ; Soft Condensed Matter (2nd)

---

Contributing Institute(s):

1. Neutronenstreuung (ICS-1)
2. JCNS-FRM-II (JCNS (München) ; Jülich Centre for Neutron Science JCNS (München) ; JCNS-FRM-II)
3. Neutronenstreuung (Neutronenstreuung ; JCNS-1)

Research Program(s):

1. 451 - Soft Matter Composites (POF2-451) (POF2-451)
2. 54G - JCNS (POF2-54G24) (POF2-54G24)

Experiment(s):

1. NEPOMUC: Neutron induced positron source munich (SR11)

Appears in the scientific report 2014

---

Database coverage:
; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

---