Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/2344
Title: Structural Phase Transitions of Syndiotactic Polystyrene upon the Guest Extraction Process
Authors: Shaiju, P
Bhoje Gowd, E
Keywords: crystallization; polymer co-crystals; syndiotactic polystyrene
Issue Date: 2016
Publisher: Wiley Online
Citation: Macromolecular Symposia 359:104-110
Abstract: In this work, the effects of initial morphology/crystalline form and the guest molecules used for the preparation of syndiotactic polystyrene (sPS) cocrystals, on the structural phase transitions of sPS upon the guest extraction process were systematically investigated. For that purpose, samples having two different initial morphologies such as amorphous and g form were used as the starting materials and guests such as chloroform and toluene were used for the preparation of sPS co-crystals. Selective extraction of guest molecules resulted in complex phase transitions in the host structure. In the case of toluene-treated amorphous samples, the structure transformed into the d (de) form. On the other hand, the chloroformtreated amorphous samples transformed into the mixture of nanoporous d (de) and e (ee) forms. When chloroform-treated g form samples were used for the guest extraction, the e (ee) form with channel-shaped cavities was obtained. In contrast, when toluene-treated g form samples were for used guest extraction, the co-crystal structure transformed to its initial crystalline form, i.e., g form, instead of forming nanoporous structure.
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
  Restricted Access
1.67 MBAdobe PDFView/Open Request a copy

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.