Morphology and Dynamic Mechanical Properties

It is well known that the third components, although small in quantity, might also bring about other significant changes such as changes in crystalline behavior, morphology, and dynamic mechanical properties, which influence the blend properties for end use. Table III lists the data obtained by DSC for iPS-fc-iPP-iPS-iPP ternary blends. The results indicate that PP crystallization... 

Recently, a new technology that manipulates the propylene sequence in EP copolymers has been proposed using a Cr(acac)3/MgCl2-Et2AlCl-ethylbenzoate catalyst system (36). The novel EP random copolymers with high isotacticity in propylene sequence show essentially different properties from those of conventional EPRs (36). This section deals with morphology and dynamic mechanical properties in binary blends of the novel EP copolymers (referred as EP) with various propylene contents. 

Landry CJT, Coltrain BK, Brady BK. In situ polymerization of tetraethoxysilane in poly (methyl methacrylate) Morphology and dynamic mechanical properties. Polymer. 1992 33(7) 1486-1495. 

Paramesvaranpillai Jyotishknmar, Joseph George, Chellappan V. Resmi, Zahakariah K. Ajesh, and Hameed Nishar. The effect of propylene-graft-maleic anhydride on the morphology and dynamic mechanical properties of polypropylene/polystyrene blends. J. Polym. Res. 22 no. 2 (2015) 2. 

Blends of PHBV and polyalcohols have been prepared by solvent casting. The polyalcohols used were castor oil (CO) and poly-propylene glycol (PPG400 and PPG1000). Thermal behaviour, crystallinity, morphology and dynamic mechanical properties of systems with various PPG1000 compositions have been studied. Crystallinity was determined by means of Fourier transform infrared spectroscopy... 

Kodgire P., Kalgaonkar R., Hambir S., Bulakh N. and Jog J. P, PP/clay nanocomposites effect of clay treatment on morphology and dynamic mechanical properties , J Appl Polym Sci, 2001, 81, 1786-1792. 

Enhanced interphase interactions, deduced from thermal and dynamic mechanical properties and morphology observed by SEM, demonstrate the efficient compatibilizing effect of iPS-fo-iPP copolymer on iPS-iPP blends. Each sequence of the iPS-fc-iPP diblock copolymer can probably penetrate or easily anchor its homopolymer phase and provide important entanglements, improving the miscibility and interaction between the iPS and iPP phases. This is in good agreement with what is inferred from the mechanical properties of the iPS-fo-iPP-iPS-iPP polyblends. 

We begin in Section 9.2 with the morphology in binary blends of iPP and various rubbery olefin copolymers where we remark the interrelation between the miscibility and dynamic mechanical properties. Section 9.3 describes the molecular orientation behavior under tensile deformation of iPP-based blends, and we compare the differences in deformation behavior between miscible and immiscible blends. Section 9.4 contains the solidification process in iPP-based blends where the effects of miscibility in the molten state on the crystallization of iPP matrix are discussed. 

Yang, J., Lin, Y, Wang, J., Lai, M., Li, J. Liu, J. et al. 2005. Morphology, thermal stability, and dynamic mechanical properties of atactic polypropylene/carbon nanotube composites. Journal of Applied Polymer Science 98 1087-1091. 

Filled Composites. Use of afm in characterizing filled composite materials has ranged from determination of composite morphology as a function of fabrication method to examination of the morphological effects of the reinforcing agent upon the matrix resin, and static and dynamic mechanical properties of the composites. 

Jayanarayanan K, Thomas S and Joseph K (2008) Morphology, static and dynamic mechanical properties of in situ microfibrillar composites based on polypropylene/poly(ethylene terephthalate) blends. Compos Part A 39 164-175. 

Microfibrils Reinforced Composites Based on PP and PET Effect of Draw Ratio on Morphology, Static and Dynamic Mechanical Properties, Crystallization and Rheology... 

Scheme 15.4, Figures 15.4,15.6 and 15.8-15.10 are adapted/reprinted from Composites Part A, Applied Science and Manufacturing, Vol. 39, 2008, Authors Jayanarayanan K, Thomas S and Joseph K, Title Morphology, static and dynamic mechanical properties of in situ microfibrillar composites based on polypropyl-ene/poly (ethylene terephthalate) blends, pp. 164-175, Copyright (2008), with permission from Elsevier Ltd. 

Hazarika A, Maji TK (2014c) Strain sensing behavior and dynamic mechanical properties of carbon nanotubes/nanoclay reinforced wood polymCT nanocomposite. Chem Eng J 247 33-41 Hazarika A, Maji TK (2014d) Thermal decomposition kinetics, flammability, and mechanical property smdy of wood polymtar nanocomposite. J Therm Anal Calorim 115 1679-1691 Hazarika A, Mandal M, Maji TK (2014) Dynamic mechanical analysis, biodegradability and thermal stability of wood polymer nanocomposites. Compos Part B 60 568-576 Hetzer M, Kee D (2008) Wootl/polymer/nanoclay composites, environmentally friendly sustainable technology a review. Chem Eng Res Des 86 1083-1093 Hill CAS, Abdirl KHPS, Hale MD (1998) A study of the potential of acetylation to improve the properties of plant fibres, frrd Crops Prod 8 53-63 Hoffmann MR, Martin ST, Choi WY, Bahnemann W (1995) Environmental application of semiconductm photocatalysis. Chem Rev 95 69-96 Huda MS, Drzal LT, Misra M, Mohanty AK (2(K)6) Wood-fiber-reinforced poly(lactic acid) composites evaluation of the physicomechanical and morphological properties. J AppI Polym Sci 102 4856-4869... 

J.D.N., and Forte, M.M.C. (2009) Morphology, mechanical and dynamic mechanical properties of recycled high density polyethylene and poly(vinyl alcohol) blends. Polym. Bull., 62, 33-43. 

Tian, D., Blacher, S., Ph Dubois and Jerome, R. (1998) Biodegradable and biocompatible inorganic-organic hybrid materials - 2. Dynamic mechanical properties, structure and morphology. Polymer, 39, 855-864. 

Tihe technological properties and the commercial application of several polymer blends have been studied extensively. Investigations of the basic principles, however, relating the phase structure of the blends to the properties of the individual components have not been carried out to an extent justified by the industrial value of these materials. Several methods have been used, the most successful being optical and electron microscopy and dynamic-mechanical measurements. Critical factors and difficulties in the morphological studies of polymer blends have been... 

Ma, X., Sauer, J. A., and Hara, M. (1995). Poly(methyl methacrylate) based ionomers. 1. dynamic mechanical properties and morphology. Macromolecules 28, 3953-3962. 

---