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Papers by Sombat Thanawan

電気学会研究会資料 Mbe 医用生体工学研究会, Mar 31, 2010

Journal of Adhesion Science and Technology

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Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2007

The degree of chlorination in chlorinated, vulcanized natural rubber was determined by X-ray abso... more The degree of chlorination in chlorinated, vulcanized natural rubber was determined by X-ray absorption near-edge spectroscopy (XANES). The vulcanized natural rubber samples were prepared in film with thickness of 180μm, approximately. They were treated with chlorination solution with different immersion times ranging from 0.5 to 30min. Experimental results implied that incorporated chlorine atoms were covalently bonded to carbon atoms in

Polymer Testing, 2014

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Polymer Testing, 2014

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Khon Kaen University Journal (Graduate Studies), 2009

Advanced Materials Research, 2013

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Advanced Materials Research, 2013

ABSTRACT Non-rubber components (mainly proteins and lipids) in natural rubber (NR) play important... more ABSTRACT Non-rubber components (mainly proteins and lipids) in natural rubber (NR) play important roles for controlling the properties of NR. Crosslinking process creates intermolecular chemical bonds in order to obtain a three-dimensional network, resulting in more elastic rubber. Sulphur crosslinking is the most popular method and is applied in the present study. Two types of NR were prepared, namely, whole natural rubber (WNR) and purified natural rubber (PNR). PNR was deproteinized by centrifugation method and then acetone extraction. These rubbers were crosslinked by an efficient vulcanization (EV) system. They were cured for three curing times (1xt90, 2xt90, 3xt90) at 150°C. WNR presents shorter curing time than PNR because there are some phospholipids and proteins which are natural accelerators for curing reaction. The presence of non-rubber components seems to play a major role on crosslinking density and adhesion phenomenon for rubber/glass system. AFM images of WNR show more heterogeneity and roughness compared to PNR.