Full metadata record
DC FieldValueLanguage
dc.contributor.authorKuo, SWen_US
dc.contributor.authorChan, SCen_US
dc.contributor.authorChang, FCen_US
dc.date.accessioned2014-12-08T15:40:28Z-
dc.date.available2014-12-08T15:40:28Z-
dc.date.issued2003-08-26en_US
dc.identifier.issn0024-9297en_US
dc.identifier.urihttp://dx.doi.org/10.1021/ma034695aen_US
dc.identifier.urihttp://hdl.handle.net/11536/27626-
dc.description.abstractCombinations of differential scanning calorimetry, Fourier transform infrared spectroscopy, optical microscopy, and small-angle X-ray scattering were used to investigate the influence of hydrogen bonding strength on the crystallization kinetics and morphologies in poly(epsilon-caprolactone) (PCL) blends with three different well-known hydrogen bond donating polymers, i.e., phenolic, poly(vinylphenol) (PVPh), and phenoxy. The strength of the intercomponent interactions in the blend system depends on the hydrogen bond donor group and occurs, based on the Painter-Coleman association model, in the order phenolic/PCL > PVPh/PCL > phenoxy/PCL. Significantly reduced overall crystallization kinetics and crystal growth rate in PCL crystalline phase were also in the order phenolic/PCL > PVPh/PCL > phenoxy/PCL, which is consistent with the relative strengths of their intermolecular hydrogen bonding. Our experimental findings show that the hydrogen bonding strength has a greater effect on the rate of crystallization than does the influence of the blend's glass transition temperature, which is related to its chain mobility. In addition, values of the surface free energy of chain folding and crystalline thickness in PCL blends depend strongly on the relative ratio of the interassociation equilibrium constant and the self-association equilibrium constant (K-A/K-B). In phenolic/PCL and PVPh/PCL blends, the values of the surface free energies of chain folding in the PCL crystalline phase are increased with an increase in the content of the hydrogen bond donating polymer since the K-A is greater than the K-B in these two blend systems. In contrast, in the phenoxy/PCL blend system, the smaller K-A relative to the K-B induces a smaller value for the surface free energy of chain folding than that of pure PCL. Various miscible crystalline/amorphous binary polymer blends exhibiting either strong hydrogen bonding or weak interactions are also reviewed.en_US
dc.language.isoen_USen_US
dc.titleEffect of hydrogen bonding strength on the microstructure and crystallization behavior of crystalline polymer blendsen_US
dc.typeArticleen_US
dc.identifier.doi10.1021/ma034695aen_US
dc.identifier.journalMACROMOLECULESen_US
dc.citation.volume36en_US
dc.citation.issue17en_US
dc.citation.spage6653en_US
dc.citation.epage6661en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.identifier.wosnumberWOS:000184943100051-
dc.citation.woscount59-
Appears in Collections:Articles


Files in This Item:

  1. 000184943100051.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.