Khan, Mohammad Ilyas and Hassan, Azman (2007) Wetting characteristics of photographic base solid polymeric substrates. In: VIIth National Symposium On Polymeric Materials 2007, November 27-28, 2007, Universiti Kuala Lumpur.
Wetting is the fundamental physical process in many industrial applications that include; film coating such as in pulp and paper, painting, printing, spraying, adhesion, enhanced oil recovery, composite processing and many more. The surface property of the coating on a given surface plays a vital role in terms of performance and service life. Significant effort has been made in the last three decades in improving the coatings on different materials. Achieving a uniform layer of coating on a given surface requires careful control and understanding of mechanisms that influence the spreading dynamics of the liquid. In this study the wetting characteristics of a number of substrates (used as photographic base material by companies like Agfa) has been studied and discussed. A total of three substrates are used in this study. A drop shape analysis method was utilised and drop spreading (in terms of contact angle and wetted drop base area) on the solid substrates were recorded using the FTA 188 video tensiometer. The test liquid was glycerine/water solutions of viscosities 49 mPa.s and 643 mPa.s and the surface tension was 65 mN/m. The results show that of the three substrates, one substrate shows low wettable characteristics and the other two show high wettable characteristics.
|Item Type:||Conference or Workshop Item (Paper)|
|Uncontrolled Keywords:||polymeric substrates, solid substrates, video tensiometer, wetting|
|Subjects:||T Technology > T Technology (General)|
|Divisions:||Chemical and Natural Resources Engineering (Formerly known)|
|Deposited By:||Norhani Jusoh|
|Deposited On:||02 Jul 2008 04:40|
|Last Modified:||23 Apr 2012 03:52|
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