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Browsing by Subject "Rheology"

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A benchmarking study of anionic bitumen emulsion properties for slurry seals

Author: Hawes, Nomashaka BN ; Johannes, PT ; Hlangothi, P ; Mturi, George AJ Date: Oct 2019 Bitumen emulsions are the most commonly used bituminous products for roads in Southern Africa because they are relatively inexpensive to apply, in comparison with hot bituminous binders. Although there have been great strides taken in the ... Read more
Characterization of gas atomized Ti-6Al-4V powders for additive manufacturing

Author: Tshabalala, Lerato C ; Mathe, Ntombizodwa R ; Chikwanda, HIlda K Date: May 2018 In this paper, titanium powders from various sources were characterized to compare powder integrity for additive manufacturing by selective laser melting process. Selective laser melting by powder-bed based Additive Manufacturing (AM) is an ... Read more
Elongational rheology of bitumen film samples as a fingerprinting technique

Author: Nkuna, A ; Abreu, J ; Mturi, George AJ Date: Oct 2019 The development of improved test methods for modified bituminous binders is currently being pursued at the Council for Scientific and Industrial Research (CSIR). The ductility test laid the initial ground work for all extensional testing of ... Read more
Investigation of the powder loading of gas-atomized Ti6Al4V powder using an ‘in-house’ binder for metal injection moulding

Author: Seerane, MN ; Chikwanda, HK ; Focke, W ; Machaka, Ronald Date: Oct 2013 Powder loading is one of the most critical factors in metal injection moulding (MIM) technology. It largely determines the success or failure of the subsequent MIM processes. A gas-atomized Ti6Al4V powder was investigated to determine an ... Read more
Microstructure development and its influence on the properties of styrene-ethylene-butylene-styrene/polystyrene blends

Author: Banerjee, R ; Ray, Suprakas S ; Ghosh, AK Date: Apr 2018 The present work is a novel attempt to understand the microstructure of styrene-ethylene-butylene-styrene (SEBS)/polystyrene (PS) blends not only through morphological studies, but also thermal, mechanical and rheological characterizations. ... Read more
Processing of polymer blends, emphasizing: Melt compounding: influence of nanoparticles on blend morphology and rheology; reactive processing in ternary systems; morphology -property relationships; performance application challenges; and opportunities and future trends

Author: Salehiyan, Reza ; Ray, Suprakas S Date: Oct 2018 This chapter discusses the structure-properties of immiscible polymer blends, focusing on the effects of compatibilization. It has been discussed that the morphology of immiscible blends governs their final properties and thus end-use ... Read more
Rheology of poly (lactic acid)-based systems

Author: Nofar, M ; Salehiyan, Reza ; Ray, Suprakas S Date: Mar 2019 Being commercialized in 1992, poly (lactic acid) (PLA) has been considered for biomedical applications and as a reliable substitute for a wide range of commodity and engineering applications where noncompostable petroleum-based polymers are ... Read more
Rheology–microstructure relationships in melt-processed polylactide/poly(vinylidene fluoride) blends

Author: Salehiyan, Reza ; Ray, Suprakas S ; Stadler, FJ ; Ojijo, Vincent O Date: Dec 2018 In this study, small amplitude oscillatory shear tests are applied to investigate the rheological responses of polylactide/poly(vinylidene fluoride) (PLA/PVDF) blends and to correlate their viscoelastic properties with the morphological ... Read more
Spheroidisation of stainless steel powder for additive manufacturing

Author: Chikosha, Silethelwe ; Tshabalala, Lerato C ; Bissett, H ; Lesufi, M ; Mnguni, Khulekani N ; Motsai, Tebogo M ; Manama, T ; Hoosain, S Date: Jun 2021 In additive manufacturing, powder characteristics play an important role in terms of flowability and densification, which can be improved by the use of spherical powders. In this study, irregular powder was spheroidised by plasma treatment, ... Read more
Structure–property relationship in PP/LDPE blend composites: The role of nanoclay localization

Author: Mofokeng, Tladi G ; Ray, Suprakas S ; Ojijo, Vincent O Date: Jan 2018 This article reports, for the first time, on how the kinetics and thermodynamics of the melt-processing control the nano/micro-structure development and properties of nanoclay-filled polypropylene (PP)/low-density polyethylene (LDPE) blend ... Read more
Thermo-oxidative degradation study of melt-processed polyethylene and its blend with polyamide using time-resolved rheometry

Author: Salehiyan, Reza ; Malwela, Thomas ; Ray, Suprakas S Date: May 2017 Time-resolved mechanical spectroscopy (TRMS) was conducted to study the thermo-oxidative degradation of linear low density polyethylene (LLDPE) samples with different thermal histories and their blends with a polyamide (PA6) in the melt state. ... Read more
A versatile characterization of poly(N-isopropylacrylamideco-N,N!-methylene-bis-acrylamide) hydrogels for composition, mechanical strength, and rheology

Author: Chetty, A ; Kovács, J ; Sulyok, Zs ; Mészáros, A ; Fekete, J ; Domján, A ; Szilágyi, A ; Vargha, V Date: Jan 2013 Poly(N-isopropylacrylamide-co-N,N"-methylene-bisacrylamide) (P(NIPAAm-co-MBA)) hydrogels were prepared in water using redox initiator. The copolymer composition at high conversion (> 95%) was determined indirectly by HPLC (high performance ... Read more

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Browsing by Subject "Rheology"

Browsing by Subject "Rheology"

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