Functionalization of polyolefins and elastomers with an oxazoline compound

Anttila, U.; Vocke, C.; Seppälä, Jukka

doi:10.1002/(sici)1097-4628(19990516)72:7<877::aid-app3>3.0.co;2-6

Cited by 21 publications

(2 citation statements)

References 8 publications

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“…In the case of acrylic acid, grafting is accompanied by homopolymerization 29. Other polar monomers such as unsaturated carboxylic acid derivatives and vinyl or acrylic substances containing more than one functional group have also been investigated 25, 39, 43–59. Coagents like styrene were used to assist the PP radical functionalization and also to reduce molar mass decrease during grafting 57, 60–63.…”

Section: Introductionmentioning

confidence: 99%

Radical grafting of polar monomers onto polypropylene by reactive extrusion

Sadik

Massardier

Becquart

et al. 2013

J of Applied Polymer Sci

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Polypropylene (PP) was functionalized in the melt by grafting polar monomers using an internal mixer and a corotating twin-screw extruder. 2,5-Bis(tertbutylperoxy)-2,5-dimethylhexane (Luperox 101) and dicumyl peroxide (DP) were the used radical initiators. The polar monomers were itaconic acid (IAc), 2-octen-1-ylsuccinic anhydride (OY), 2-hydroxyethyl methacrylate (HEMA), and 3-allyloxy-1,2-propanediol (AP). Grafting was quantified by FTIR combined to Elemental Analysis. Grafting degree depends mainly on monomer and initiator natures and concentrations. Grafting degree maxima were 3.9, 2, 9.5, and 3.9 wt %, respectively, for IAc, OY, HEMA, and AP. Some properties of the modified PP were evaluated. Thermal analysis indicated that the polarity of PP increased by grafting reaction and size-exclusion chromatography showed that the grafting was not accompanied by a significant M w and viscosity decrease.

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Section: Introductionmentioning

confidence: 99%

Radical grafting of polar monomers onto polypropylene by reactive extrusion

Sadik

Massardier

Becquart

et al. 2013

J of Applied Polymer Sci

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“…Entre os vários grupos reativos, a 2-oxazolina tem recebido destaque, uma vez que reagem com um grande número de outros grupos contendo hidrogênio lábil, tais como carboxilas, aminas, hidroxilas, fenóis e mercaptanas, tornando-se adequados para compatibilizar misturas com diversos polímeros [4,5,[9][10][11][12] .…”

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Utilização de NBR modificada com grupos 2-oxazolina em misturas de NBR/EVA

2003

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Misturas envolvendo borracha nitrílica e copolímeros de etileno-acetato de vinila na proporção 70:30 % em peso, foram preparadas na presença de borracha nitrílica funcionalizada com 2-oxazolina isoladamente ou combinada com EVA funcionalizado com grupos hidroxila, carboxila ou mercaptana. A reação entre os grupos funcionais foi verificada por análise de FTIR da fração insolúvel de amostras não vulcanizadas e pelo decréscimo nos valores de tan delta nos ensaios dinâmico-mecânicos. A utilização desses copolímeros funcionalizados não influenciou significativamente as propriedades mecânicas, provavelmente devido à proporção da mistura utilizada (rica em NBR) o que facilita a localização da NBR funcionalizada no interior da fase elastomérica.

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Compatibilization of polyethylene/polyamide 6 blends with functionalized polyethylenes prepared with metallocene catalyst

Anttila

Hakala²,

Helaja

et al. 1999

J. Polym. Sci. A Polym. Chem.

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Metallocene catalyst technology was utilized to prepare functionalized polyethylenes, which were used as compatibilizers in polyethylene/polyamide 6 (40/60) blends. Polymerization of ethylene with 10‐undecen‐1‐ol, 10‐undecenoic acid, or N‐methyl‐10‐undecenylamine resulted in ethylene copolymers with a small amount (0.2–1.2 mol %) of functionalized side chains. The blends were prepared in a twin‐screw midiextruder, and injection molded with a mini‐injection molding machine. The effect of the new compatibilizers on morphology and mechanical and thermal properties was studied. Toughness as well as stiffness and strength increased significantly with an addition of 10 wt % compatibilizer. Morphology became much more uniform, and crystallization and melting behavior changed. The Molau test with FTIR analysis was used to determine that the desired reactions between the compatibilizer and polyamide had actually taken place. The results showed functionalized polyethylenes prepared with metallocene catalysts to act as effective compatibilizers in polyethylene/polyamide 6 blends. © 1999 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 37: 3099–3108, 1999

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Functionalization of polyolefins and elastomers with an oxazoline compound

Cited by 21 publications

References 8 publications

Radical grafting of polar monomers onto polypropylene by reactive extrusion

Radical grafting of polar monomers onto polypropylene by reactive extrusion

Utilização de NBR modificada com grupos 2-oxazolina em misturas de NBR/EVA

Compatibilization of polyethylene/polyamide 6 blends with functionalized polyethylenes prepared with metallocene catalyst

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