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Compatibilization of rubber/polyethylene blends
2008 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Compatibilization of thermoplastic elastomer blends containing polyethylene and recycled rubber was studied. Two compatibilization methods, reactive and non-reactive, were evaluated. 1-octene (EXACT 0210) was used as non- reactive compatibilizer. Phenolic resins (SP1045 & HRJ10518) were reactive agents. There existed optimal composition of compatibilizers which were 5% and 10% weight in case of reactive and non-reactive agents respectively. Octene-compatibilized blends gave high tear strength while resin- compatibilized mixtures gave high tensile strength in comparison with reference material. Comparison in compatibilizing capabilities HRJ-10518 and SP-1045 was carried out. The former one had better capabilities than the latter. Talcum was used as anti-agglomeration agent but it failed to work properly. Rubber particle size had substantial effect on mechanical strength in case of HRJ- 10518 based blends while no remarkable influence was found in case of octene-based counterparts. Calendaring pressure could be minimized without any adverse effect. Non-vulcanized rubber was utilized to enhance tear strength but its effect was off-set by the degradation of interfacial surface at high temperature. SEM analysis revealed homogeneous microstructure in both kinds of compatibilization. EXACT 0210- compatibilized blends showed more plastic deformation of the matrix than reactive blends. Stable connection between phases was also observed.

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Keyword [en]
Keyword [sv]
URN: urn:nbn:se:ltu:diva-43397ISRN: LTU-PB-EX--08/060--SELocal ID: 146d9bac-e8a0-44c7-a03f-0786dd8a29faOAI: diva2:1016629
Subject / course
Student thesis, at least 30 credits
Educational program
Materials Engineering, master's level
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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