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Engineering properties of compatibilized polypropylene/liquid crystalline polymer blends
Journal of applied polymer science, 2012-06, Vol.124 (6), p.5279-5285
Mandal, P. K.
Siddhanta, S. K.
Chakraborty, D.
2012
Volltextzugriff (PDF)
Details
Autor(en) / Beteiligte
Mandal, P. K.
Siddhanta, S. K.
Chakraborty, D.
Titel
Engineering properties of compatibilized polypropylene/liquid crystalline polymer blends
Ist Teil von
Journal of applied polymer science, 2012-06, Vol.124 (6), p.5279-5285
Ort / Verlag
Hoboken: Wiley Subscription Services, Inc., A Wiley Company
Erscheinungsjahr
2012
Quelle
Wiley Online Library
Beschreibungen/Notizen
Polypropylene (PP) and Vectra A950, a thermotropic liquid crystalline polymer (LCP), blends were prepared in a single‐screw extruder with the variation in Vectra A950 content in presence of fixed amount (2%, with respect to PP and LCP mixture as a whole) of ethylene‐acrylic acid (EAA) copolymer as a compatibilizer. Mechanical analysis of the compatibilized blends within the range of LCP incorporations under study (2–10%) indicated pronounced improvement in the moduli, ultimate tensile strength (UTS), and hardness. Fourier transform infrared (FTIR) spectroscopy studies revealed the presence of strong interaction through H‐bonding between the segments of Vectra A950 and the compatibilizer EAA. Morphological studies performed by scanning electron microscopy (SEM) manifested the development of fine fibrillar morphology in the compatibilized PP/Vectra A950 blends, which had large influence on the mechanical properties. Differential scanning calorimetry studies showed an initial drop of the melting point of PP in the presence of EAA followed by enhancement of the same in presence of Vectra A950. TGA showed an increase in the thermal stability for all blends with respect to matrix polymer PP. Rheological studies showed that a very small quantity of Vectra A 950 was capable of reducing the melt viscosity of PP particularly in the lower shear rate region and hence facilitated processibility of the blends. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Sprache
Englisch
Identifikatoren
ISSN: 0021-8995
eISSN: 1097-4628
DOI: 10.1002/app.34277
Titel-ID: cdi_proquest_miscellaneous_1541420475
Format
–
Schlagworte
Applied sciences
,
Blends
,
Compatibility
,
Exact sciences and technology
,
Extrusion moulding
,
Fourier transforms
,
Liquid crystal polymers
,
liquid crystalline polymer
,
Machinery and processing
,
Materials science
,
mechanical properties
,
morphology
,
Moulding
,
Plastics
,
Polymer blends
,
Polymer industry, paints, wood
,
Polymers
,
Polypropylenes
,
Scanning electron microscopy
,
spectral properties
,
Technology of polymers
,
thermal properties
,
Ultimate tensile strength
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