Publication: Study of tack properties of uncrosslinked natural rubber
2
Issued Date
2004-12-06
Resource Type
ISSN
01694243
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2-s2.0-9144273255
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Mahidol University
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SCOPUS
Bibliographic Citation
Journal of Adhesion Science and Technology. Vol.18, No.12 (2004), 1449-1463
Suggested Citation
Wirasak Smitthipong, Michel Nardin, Jacques Schultz, Thirawan Nipithakul, Krisda Suchiva Study of tack properties of uncrosslinked natural rubber. Journal of Adhesion Science and Technology. Vol.18, No.12 (2004), 1449-1463. doi:10.1163/1568561042323248 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/21263
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Title
Study of tack properties of uncrosslinked natural rubber
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Abstract
The purpose of this study was to better understand the effect of non-rubber substances (mainly proteins and lipids) on adhesion (against glasses) and self-adhesion tack properties of uncrosslinked natural rubber (NR). Various types of NR, with or without non-rubber constituents, were prepared. Synthetic polyisoprene rubber was also used as a reference material. All the rubbers were first characterized by many techniques (FT-IR, DSC, GPC, etc.). Two experimental tests were specially utilized to measure the level of adhesion and self-adhesion: (i) at very short contact times (from a few milliseconds up to 0.1 s) the impact of a pendulum and (ii) for longer contact times (from 0.1 s to a few h) the contact of a probe using a tensile testing machine. The tack energy increased with contact time for all the rubbers studied. Natural rubber which did not contain proteins and lipids exhibited the highest adhesion and self-adhesion tack abilities. In contrast, whole natural rubber, containing both proteins and lipids, showed the lowest tack property. In each case, self-adhesion levels are higher than those of adhesion, presumably due to interdiffusion of macromolecular chains or chain segments at the interface.