PMID- 18925752 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20090922 LR - 20090828 IS - 0743-7463 (Print) IS - 0743-7463 (Linking) VI - 25 IP - 7 DP - 2009 Apr 7 TI - GIUSAXS and AFM studies on surface reconstruction of latex thin films during thermal treatment. PG - 4230-4 LID - 10.1021/la801527y [doi] AB - The structural evolution of a single-layer latex film during annealing was studied via grazing incidence ultrasmall-angle X-ray scattering (GIUSAXS) and atomic force microscopy (AFM). The latex particles were composed of a low-Tg (-54 degrees C) core (n-butylacrylate, 30 wt %) and a high-Tg (41 degrees C) shell (t-butylacrylate, 70 wt %) and had an overall diameter of about 500 nm. GIUSAXS data indicate that the q(y) scan at q(z) = 0.27 nm(-1) (out-of-plane scan) contains information about both the structure factor and the form factor. The GIUSAXS data on latex films annealed at various temperatures ranging from room temperature to 140 degrees C indicate that the structure of the latex thin film beneath the surface changed significantly. The evolution of the out-of-plane scan plot reveals the surface reconstruction of the film. Furthermore, we also followed the time-dependent behavior of structural evolution when the latex film was annealed at a relatively low temperature (60 degrees C) where restructuring within the film can be followed that cannot be detected by AFM, which detects only surface morphology. Moreover, compared to AFM studies GIUSAXS provides averaged information covering larger areas. FAU - Hu, Shanshan AU - Hu S AD - State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Renmin Street 5625, 130022 Changchun, PR China. FAU - Rieger, Jens AU - Rieger J FAU - Roth, Stephan V AU - Roth SV FAU - Gehrke, Rainer AU - Gehrke R FAU - Leyrer, Reinhold J AU - Leyrer RJ FAU - Men, Yongfeng AU - Men Y LA - eng PT - Journal Article PL - United States TA - Langmuir JT - Langmuir : the ACS journal of surfaces and colloids JID - 9882736 EDAT- 2008/10/18 09:00 MHDA- 2008/10/18 09:01 CRDT- 2008/10/18 09:00 PHST- 2008/10/18 09:00 [pubmed] PHST- 2008/10/18 09:01 [medline] PHST- 2008/10/18 09:00 [entrez] AID - 10.1021/la801527y [doi] PST - ppublish SO - Langmuir. 2009 Apr 7;25(7):4230-4. doi: 10.1021/la801527y.