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Studies of Mechanical Properties, Thermal Behaviour and Morphology of Polyamide 11 and Nitrile Rubber Blends: Effect of Rubber and Acrylonitrile Content
| Content Provider | Semantic Scholar |
|---|---|
| Author | Mehrabzadeh, Mahmoud Burford, Robert I. '. |
| Copyright Year | 2005 |
| Abstract | The impact behaviour of polyamlde 11 when modified with butadieneacrylonitrile copolymers ("nitrlle rubbers') are studied . The effects of rubber addition concentration and the acrylontrile content are examined. At higher nitrile contents relatively large amounts of rubber are needed for toughness but this will reduce stiffness and strength . However, low-nitrile content elastomers enhance toughness, even at rather low (20%) levels. The thermal behaviour of polyamide 111nitrile rubber brands are studied, Sections of tensile and/or impact test-pieces are then analyzed by DSC and DMA. These two methods are combined to show trends in T y Tie, modulus and tan a . The poyamide T. and T6 decreased and the TS s of the nitrile rubber increased . These changes indicate partial miscibility between the rubber and the thermoplastic . Similarly, DMA tan a data also reflect polymer miscibility. Changes in modulus at various temperatures are measured for each blend . At a given rubber loading, the lower AN rubber blends give low modulus values at room temperature, correlating with improved impact performance. Phase morphology and mechanism of fracture surface morphology of PA11/NBA blends are studied by scanning electron microscopy (SEM). |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://journal.ippi.ac.ir/manuscripts/ipjE95040301.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
