| Autor: |
Yoopadee Promdum, Pairote Klinpituksa, Jareerat Ruamcharoen |
| Jazyk: |
angličtina |
| Rok vydání: |
2009 |
| Předmět: |
|
| Zdroj: |
Songklanakarin Journal of Science and Technology (SJST), Vol 31, Iss 4, Pp 453-457 (2009) |
| Druh dokumentu: |
article |
| ISSN: |
0125-3395 |
| Popis: |
The graft copolymer of natural rubber (NR) and 2-hydroxyethyl methacrylate (HEMA) was prepared by seeded emulsion polymerization using cumene hydroperoxide (CHP) and tetraethylene pentamine TEPA) as an initiator system. The structures of the copolymers were characterized by FT-IR and 1H-NMR spectroscopy techniques. The adhesion properties of NR-g-HEMA were examined. The effects of monomer concentration, initiator concentration, reaction temperature,reaction time and the agitation speed on grafting and grafting efficiency were investigated. It was found that the optimumconditions for preparing NR-g-HEMA when 5 phr of HEMA with 0.15mol% of initiator was used were 60oC for 90 min under agitation speed of 50 rpm. Furthermore, the adhesion properties to plywood of the graft copolymers are higher than those of original NR. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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