Surface plasmon resonance measurement of polyethylene glycol in water

Publication Issue: 
Volume 29, Number 3&4, 2008
Page No: 
Date Received: 
Wednesday, December 26, 2007
Authors' Name: 
Nurul Izrini Ikhsan
W. Mahmood Mat Yunus
Zainal Abidin Talib
Zaidan Abdul Wahab
Authors' Affiliation and Address: 
Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia

Polyethylene glycol (PEGs) is a family of water
soluble linear polymers formed by the additional
reaction of ethylene oxide (EO) with mono ethylene
glycols (MEG) or diethylene glycol. The formula for
polyethylene glycol is: H( OCH2 CH2 )n OH where n is
the average number of repeating ethylene oxide groups.
There are many grades of PEGs that represents them by
their average molecular weight. For example, PEG 400
consists of a distribution of polymers of ranging
molecular weight corresponds to an approximate average
number of repeating EO groups (n) of ≈ 9. Polyethylene
glycols are available in average molecular weight
ranging from 200 to 20000. This wide range of products
provides flexibility in choosing properties to meet the
requirements of many different applications

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