Full metadata record
DC FieldValueLanguage
dc.contributor.authorLin, I-Hongen_US
dc.contributor.authorKuo, Shiao-Weien_US
dc.contributor.authorChang, Feng-Chihen_US
dc.date.accessioned2014-12-08T15:08:31Z-
dc.date.available2014-12-08T15:08:31Z-
dc.date.issued2009-10-20en_US
dc.identifier.issn0032-3861en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.polymer.2009.09.012en_US
dc.identifier.urihttp://hdl.handle.net/11536/6558-
dc.description.abstractA series of miscible crystalline-amorphous diblock copolymers, (poly(epsilon-caprolactone)-b-(vinyl phenol), PCL-b-PVPh) were prepared through sequential ring-opening and controlled living free radical (nitroxide-mediated) polymerizations and then blended with poly(vinyl pyrrolidone) (PVP) homopolymer. Specific interactions, miscibility, and self-assembly morphologies mediated by hydrogen bonding interactions of this new A-B/C type blend, were investigated in detail. Micro-phase separation of these miscible PCL-b-PVPh diblock copolymers occurs by blending with PVP through competitive hydrogen bonding interaction in this A-B/C blend. FTIR, XRD, and DSC analyses provide positive evidences that the carbonyl group of PVP is a significantly stronger hydrogen bond acceptor than PCL, thus the PCL block is excluded from the PVPh/PVP miscible phase to form self-assembly structure. (13)C CP/MAS solid-state NMR spectra provide additional evidence confirming that micro-phase separation occurs in the blend system because of the presence of more than two T(1p)(H) values for this A-B/C blend system. According to the result of the FTIR and SAXS results, the smaller molecular weight system contains a greater fraction of the hydrogen-bonded carbonyl group, cause indirectly the high degree of phase separation among these blends. In addition, the SAXS profiles possess a sharp primary peak and highly long range ordered reflections q/q* ratios of 1:2:3 at lower PVP content, an indication of the lamellar structure in the blend which is consistent with TEM image. The phase behavior and morphology shifts from lamellar to cylinder structure with further increase in the PVP content. (C) 2009 Elsevier Ltd. All rights reserved.en_US
dc.language.isoen_USen_US
dc.subjectSelf-assemblyen_US
dc.subjectBlock copolymeren_US
dc.subjectHydrogen bondingen_US
dc.titleSelf-Assembly structures through competitive interactions of miscible crystalline-amorphous diblock copolymer/homopolymer blendsen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.polymer.2009.09.012en_US
dc.identifier.journalPOLYMERen_US
dc.citation.volume50en_US
dc.citation.issue22en_US
dc.citation.spage5276en_US
dc.citation.epage5287en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.identifier.wosnumberWOS:000271144600016-
dc.citation.woscount20-
Appears in Collections:Articles


Files in This Item:

  1. 000271144600016.pdf

If it is a zip file, please download the file and unzip it, then open index.html in a browser to view the full text content.