Chemical Engineering / Kimya Mühendisliği

Permanent URI for this collectionhttps://hdl.handle.net/11147/14

Browse

Filters

2002 - 20032

Settings

Author: search.filters.author.Ulutan, SevgiSubject: search.filters.subject.Water vapour adsorption

Search Results

Now showing 1 - 2 of 2
  • Article
    Citation - WoS: 8
    Citation - Scopus: 8
    Water Vapour Adsorption on Organic and Inorganic Polymers
    (Springer Verlag, 2003) Balköse, Devrim; Özkan, Fehime; Balköse, Devrim; Ülkü, Semra; Ülkü, Semra; Özkan, Seher Fehime; 03.02. Department of Chemical Engineering; 03. Faculty of Engineering; 01. Izmir Institute of Technology
    Water vapour adsorption on polymers affects their processing behaviour and useful properties. Water vapour adsorption on organic polymers, silk, Nylon 6 fibres in undrawn and permanent set forms, polyester micro fibres, plasticised PVC films with 60 phr dioctylphthalate (OOP) and inorganic polymer sepiolite particles were investigated in this study. The materials were examined using the BET equation. The surface areas of silk, cast Nylon 6 and muss Nylon 6 were determined as 108, 46 and 23 m2 g-1, respectively. Sepiolite did not fit BET equation. Polyester and PVC adsorbed very small amounts of moisture.
  • Article
    Citation - WoS: 47
    Citation - Scopus: 49
    Characterization of Hollow Chemical Garden Fibers From Metal Salts and Water Glass
    (Springer Verlag, 2002) Balköse, Devrim; Özkan, Fehime; Özkan, Seher Fehime; Ulutan, Sevgi; Balköse, Devrim; Ülkü, Semra; 03.02. Department of Chemical Engineering; 03. Faculty of Engineering; 01. Izmir Institute of Technology
    Hollow fibers formed from water glass and metal salts of IIA(Ca), VIIB(Fe, Co, Ni) and IB(Cu) groups were characterised in this study. Fragile fibres obtained herein broke down into small pieces during isolation and drying. Quantitative information about morphology, chemical composition and surface structure of the fibres were obtained. The diameter and wall thickness of the fibers were around 50 μ and 3 μ. respectively. They had particulate inner and smooth outer surfaces. Fibers had variable composition with metal (II) oxide/SiO2 ratio in the range 0.31 to 1.02. While group VIIB metal (II) fibres were amorphous, group IIA and IB metal (II) fibers were partially crystalline All the fibres had pores both in micro pore and meso pore region. The B.E.T. surface area fron N2 adsorption data was in the range of 10-249 m3 g-1 and 8-176 m2 g-1 from Langmuir an B.E.T. models respectively.