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100 _aThitithammawong A
245 0 _aPreparation and properties of chlorinated epoxidised natural rubber latex and its latex-based adhesive
260 _bJournal of Rubber Research
_c2012
300 _a19-34
500 _aSource Year: 2012
520 _aChlorinated epoxidised natural rubber (CENR) was synthesised using epoxidised natural rubber (ENR) in its latex state with an in-situ chloride ion generating substance. The influences of the molar ratios of sodium hypochlorite/sodium chloride (NaOCl/NaCl), pH and the concentration of the NaOCl/NaCl, and reaction time on the level of chlorine contents in the CENR molecules were investigated. FTIR observation showed the presence of a C-Cl band in the rubber structure upon chlorination of the ENR by mixing it with NaOCl and NaCl. The thermogravimetric analysis proved that chlorination provided the CENR with superior thermal stability than that of the ENR. The CENR latex was then formulated and compounded to prepare a latex-based adhesive. It was found that crosslink reactions generated by different vulcanisation systems caused different adhesive strengths in terms of shear strength and cleavage peel strength. Furthermore, the adhesive exhibited higher shear strength than the commercial grade adhesives (i.e. Contact and Dragon) where comparable peel strengths were obtained. However, both properties were relatively lower when compared with Diabond.
650 _aChlorinated epoxidised natural rubber
650 _aLatex based adhesive
650 _aSodium chloride
650 _aSodium hypochlorite
700 _aNakason C
700 _aRuttanasupa N
942 _cJS
999 _c65559
_d65559