Giant vesicles (GV) in colloidal system under the optical polarization microscope (OPM)

Khalisanni Khalid; Muhammad Azri Mohd Noh; M Niyaz Khan; Ruzaina Ishak; Esther Penney; Zaira Zaman Chowdhury; Mohammad Hafiz Hamzah; Maizatulnisa Othman

doi:10.1016/j.micron.2017.04.010

Giant vesicles (GV) in colloidal system under the optical polarization microscope (OPM)

Micron. 2017 Sep:100:30-33. doi: 10.1016/j.micron.2017.04.010. Epub 2017 Apr 26.

Authors

Khalisanni Khalid¹, Muhammad Azri Mohd Noh², M Niyaz Khan², Ruzaina Ishak³, Esther Penney³, Zaira Zaman Chowdhury⁴, Mohammad Hafiz Hamzah⁵, Maizatulnisa Othman⁶

Affiliations

¹ Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia (1); Laboratory Management Program, Technical and Commercialization Centre, Malaysian Agricultural Research and Development Institute (MARDI), 43400 Serdang, Selangor, Malaysia. Electronic address: typhloids@gmail.com.
² Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia (1).
³ National Centre for Food Manufacturing, University of Lincoln, Holbeach Technology Park, Park Road, Holbeach, Lincolnshire, PE12 7PT, United Kingdom.
⁴ Nanotechnology and Catalysis Research Center (NANOCAT), University Malaya, Kuala Lumpur 50603, Malaysia.
⁵ Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia (1); National Institute of Public Administration (INTAN) Main Campus Bukit Kiara, Jalan Bukit Kiara, 50480 Kuala Lumpur, Malaysia.
⁶ Department of Manufacturing and Material Engineering, Kuliyyah of Engineering, International Islamic University Malaysia, Jalan Gombak, Selangor Darul Ehsan, PO BOX 10, 50728 Kuala Lumpur, Malaysia.

PMID: 28477556
DOI: 10.1016/j.micron.2017.04.010

Abstract

This paper discusses the unprecedented microscopic findings of micellar growth in colloidal system (CS) of catalyzed piperidinolysis of ionized phenyl salicylate (PS^-). The giant vesicles (GV) was observed under the optical polarization microscope (OPM) at [NaX]=0.1M where X=3-isopropC₆H₄O^-. The conditions were rationalized from pseudo-first-order rate constant, k_obs of PS^- of micellar phase at 31.1×10^-3s^-1 reported in previous publication. The overall diameter of GV (57.6μm) in CS (CTABr/NaX/H₂O)-catalyzed piperidinolysis (where X=3-isopropC₆H₄O) of ionized phenyl salicylate were found as giant unilamellar vesicles (GUV) and giant multilamellar vesicles (GMV). The findings were also validated by means of rheological analysis.

Keywords: Colloids; Giant vesicles; Micelles; Optical polarization microscope; Rheology.