Synthesis and Characterization of NBR ́s by RAFT Technique and their use as Rubber Precursor in ABS Type Resins
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| Format: | Artículo científico |
| Language: | en |
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Sociedad Química de México
2014
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| _version_ | 1876444939931353088 |
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| author | Francisco Javier Enríquez-Medrano |
| author_facet | Francisco Javier Enríquez-Medrano |
| contents | Synthesis and Characterization of NBR ́s by RAFT Technique and their use as Rubber Precursor in ABS Type Resins Francisco Javier Enríquez-Medrano Florentino Soriano-Corral Pablo Acuña-Vázquez Edgar N. Cabrera-Álvarez Hened Saade-Caballero Adalí Castañeda-Facio Luis Valencia López Ramón Díaz de León-Gómez Multidisciplinaria (Ciencias Naturales y Exactas) TEM DMA RAFT Key words ABS resin Different rubbers based on polybutadiene were synthesized in solution by the reversible addition-fragmentation chain-transfer polymerization (RAFT) technique using 4-cyano-4-[(dodecylsulfany lthiocarbonyl)sulfanyl] pentanoic acid as RAFT agent and 1,1’-azo - biscyclohexanecarbonitrile (Vazo-88) as initiator. The results obtained in the polymerization of polybutadiene and poly(butadiene- co -acry - lonitrile) (NBR) are discussed in terms of molecular weight distribu - tion, composition and microstructure. Composition of polybutadiene in NBR ́s was kept constant along the copolymerization, and the vinyl, cis and trans isomers are shown in values of around 12, 26 and 62% in all cases. Resulting rubbers were used to synthesize acrylonitrile- butadiene-styrene (ABS) type resins through an in situ bulk polym - erization. Dynamic-mechanical properties and the morphology were analyzed in all the different ABS resins. In DMA analyses, the rubber component presented two transitions as well as an increase in the magnitude of the transition located around -75 °C, which is explained by the significant amount of SAN occlusions in the morphology, analyzed by TEM. 2014 artículo científico 1870-249X https://www.redalyc.org/articulo.oa?id=47531764017 en http://www.redalyc.org/revista.oa?id=475 Journal of the Mexican Chemical Society application/pdf Sociedad Química de México Journal of the Mexican Chemical Society (México) Num.2 Vol.58 |
| format | Artículo científico |
| id | redalyc_47531764017 |
| institution | Redalyc |
| language | en |
| publishDate | 2014 |
| publisher | Sociedad Química de México |
| spellingShingle | Synthesis and Characterization of NBR ́s by RAFT Technique and their use as Rubber Precursor in ABS Type Resins Francisco Javier Enríquez-Medrano Multidisciplinaria (Ciencias Naturales y Exactas) TEM DMA RAFT Key words ABS resin Synthesis and Characterization of NBR ́s by RAFT Technique and their use as Rubber Precursor in ABS Type Resins Francisco Javier Enríquez-Medrano Florentino Soriano-Corral Pablo Acuña-Vázquez Edgar N. Cabrera-Álvarez Hened Saade-Caballero Adalí Castañeda-Facio Luis Valencia López Ramón Díaz de León-Gómez Multidisciplinaria (Ciencias Naturales y Exactas) TEM DMA RAFT Key words ABS resin Different rubbers based on polybutadiene were synthesized in solution by the reversible addition-fragmentation chain-transfer polymerization (RAFT) technique using 4-cyano-4-[(dodecylsulfany lthiocarbonyl)sulfanyl] pentanoic acid as RAFT agent and 1,1’-azo - biscyclohexanecarbonitrile (Vazo-88) as initiator. The results obtained in the polymerization of polybutadiene and poly(butadiene- co -acry - lonitrile) (NBR) are discussed in terms of molecular weight distribu - tion, composition and microstructure. Composition of polybutadiene in NBR ́s was kept constant along the copolymerization, and the vinyl, cis and trans isomers are shown in values of around 12, 26 and 62% in all cases. Resulting rubbers were used to synthesize acrylonitrile- butadiene-styrene (ABS) type resins through an in situ bulk polym - erization. Dynamic-mechanical properties and the morphology were analyzed in all the different ABS resins. In DMA analyses, the rubber component presented two transitions as well as an increase in the magnitude of the transition located around -75 °C, which is explained by the significant amount of SAN occlusions in the morphology, analyzed by TEM. 2014 artículo científico 1870-249X https://www.redalyc.org/articulo.oa?id=47531764017 en http://www.redalyc.org/revista.oa?id=475 Journal of the Mexican Chemical Society application/pdf Sociedad Química de México Journal of the Mexican Chemical Society (México) Num.2 Vol.58 |
| title | Synthesis and Characterization of NBR ́s by RAFT Technique and their use as Rubber Precursor in ABS Type Resins |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) TEM DMA RAFT Key words ABS resin |
| url | https://www.redalyc.org/articulo.oa?id=47531764017 |