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Showing 1 to 20 of 25 for “"Twin-screw extrusion"”.
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Texturization of soy protein via twin-screw extrusion
Extrusion texturization is one of the most economic means of converting vegetable proteins into textured products with a wide range of applications as meat supplements or extenders. In this study, a Werner & Pfleiderer twin-screw extruder Model ZSK-30 was used to texturize defatted soy flour and …
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Design and development of polymeric nanoparticles by continuous manufacture using twin screw extrusion
… remains a challenge. As a manufacturing tool, extrusion has been widely implemented in the pharmaceutical industry for a range of dosage forms due to the ability to implement continuous manufacturing. <br/><br/>This thesis explores the use of extrusion as a tool to continuously manufacture …
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Experimental Modeling of Twin-Screw Extrusion Processes to Predict Properties of Extruded Composites
Twin-screw extrusion is used to compound fillers into a polymer matrix in order to improve the properties of the final product. The resultant properties of the composite are determined by the operating conditions used during extrusion processing. Changes in the operating conditions affect the …
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Characterization of starch-additive interactions in starch-based systems during twin-screw extrusion
… increased requirements to develop an advanced extrusion technology, it is important to be able to predict behavior of feed ingredients on the characteristics of extruded products. Thus, the effects of feed composition on the overall performance of a twin-screw extruder and the final product …
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Twin screw extrusion pre-treatment of wheat straw for biofuel and lignin biorefinery applications
… processes in the production of biofuel. Twin screw extrusion is a highly feasible pretreatment method and has been received great interest in the recent year pre-treatment studies. Twin screw extrusion is a continuous process, where the biomass feedstock can be subjected to a combination …
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The production of a lyotropic liquid crystal coated powder precursor through twin screw extrusion.
The twin screw extrusion technique has been explored to produce lyotropic liquid crystal coated powder precursor by exploiting Pluronic F127 thermoreversible gelation property to get powder precursor without granular aggregates or with less compacted granular aggregates. The highly soluble …
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On-line rheology, flow simulation and system-based modelling of twin-screw extrusion processing of corn meal
… corn meal formulations was carried out using a twin screw extruder as a rheometer. On-line rheometrical techniques used for rheological characterization of non-food polymers were modified to make them adaptable to food materials extruded in a twin-screw extruder. The experimentally obtained …
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Investigation of a solvent-free continuous process to produce pharmaceutical co-crystals. Understanding and developing solvent-free continuous cocrystallisation (SFCC) through study of co-crystal formation under the application of heat, model shear and twin screw extrusion, including development of a near infrared spectroscopy partial least squares quantification method
… as a process analytical technology (PAT). Twin screw, hot melt extrusion was the base technique of the SFCC process. Changing parameters such as temperature, screw speed and screw geometry was important for improving the co-crystal yield. The level of mixing and shear was directly …
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Chain Extension of Polyamide-6 & Polyamide-6/Organoclay Nanocomposites. Control of thermal degradation of polyamide-6/organoclay nanocomposites during extrusion using a novel chain extender
… The materials were compounded using a linear twin extruder and various laboratory scale mixers. The effects of organoclay and chain extender were studied using both processing methods. In order to replicate large scale production used in industry, a comprehensive plan of experimental work was …
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Profile extrusion of wood plastic cellular composites and formulation evaluation using compression molding
… cellular structure while reducing the density. Extrusion processing is one of the most economical methods for profile formation. For our study, rectangular profiles were extruded using a twin-screw extrusion system with different grades of HDPE and with varying wood fibre and lubricant contents …
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The compounding of short fibre reinforced thermoplastic composites
… initial method chosen for investigation is the twin screw extrusion compounding process. Variables such as fibre feeding arrangement and extrusion screw design are found to be factors influencing the properties of carbon and glass reinforced nylon 6,6. Use is made of computer programs to predict …
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On-line shear and extensional rheometry of polymer melts in the extrusion process.
… characteristics of polyolefin melts during twin screw extrusion (TSE). Comparisons with off-line rheometry were made using a twin-bore capillary rheometer and a modular in-line slit die rheometer (ILR) provided in-line rheometry comparisons. Both capillary rheometers were controlled via PCs …
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On-line shear and extensional rheometry of polymer melts in the extrusion process.
… characteristics of polyolefin melts during twin screw extrusion (TSE). Comparisons with off‑line rheometry were made using a twin‑bore capillary rheometer and a modular in‑line slit die rheometer (ILR) provided in‑line rheometry comparisons. Both capillary rheometers were controlled via PCs …
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Relationships Between Physical, Chemical, and Functional Properties of Enzymatically-Modified and Unmodified Soy Protein (Nmr, Plasteins, Denaturation, Extrusion)
… solubility, functionality, process performance, (twin-screw extrusion), and high-resolution pulsed proton magnetic resonance (PMR). The effects of solvent state, pH (pD), and extent of hydrolysis (EH) on gross conformational properties of SPI were studied by PMR (360 MHz) using novel spectral …
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In-line measurement of solibility of physical blowing agents in thermoplastic melts as related to extrusion foaming
… agent solubility in thermoplastic melts in extrusion foaming equipment has been developed in this study. This method uses video microscopy in connection with a foaming extruder (single or twin-screw) to generate solubility data by observing the onset of gas bubble formation/dissolution. This …
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Novel PLA-based materials with improved thermomechanical properties and processability through control of morphology and stereochemistry. A study in improving toughness and processability of PLA by blending with biodegradable polymers and the two PLA enantiomers PLLA and PDLA to accelerate crystallinity and heat resistance
… (PBS) in binary and ternary formulations via twin screw extrusion. PCL has been known to act as an impact modifier for PLA, but to cause a corresponding reduction in strength. Results showed that the binary PLA blends containing PBS and PCL, had reduced viscosity, elastic modulus and strength, …
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Processing melt blended polymer nanocomposites using a novel laboratory mini-mixer. Development of polymer nanocomposites in the melt phase using a novel mini-mixer.
… been done using the likes of the Haake twin screw extruder to manufacture nanocomposites within the laboratory but this research project has used a novel minimixer specifically developed to replicate mixing like large twin screw extrusion machines. The minimixer uses a twin paddle system …
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The influence of multi-walled carbon nanotubes on the properties of polypropylene nanocomposite. The enhancement of dispersion and alignment of multiwalled carbon nanotube in polypropylene nanocomposite and its effect on the mechanical, thermal, rheological and electrical properties.
… composites were prepared by conventional twin screw extrusion. Dispersants and compatibilisers were used to establish good interaction between filler and polymer. Several different extruder screw configurations were designed and the properties of PP/MCNT composite prepared by each …
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Multi-scale effects on deformation mechanisms of polymer nanocomposites : experimental characterisation and numerical study
… These nanocomposites were prepared using twin screw extrusion and injection moulding processes with a well-known Taguchi design of experiments (DoE) method in order to statistically detect the significant factors for influencing their mechanical properties. The preferred material …
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Electrical, Thermal, and Machining Behaviour of Injection Moulded Polymeric CNT Nanocomposites
… prepared with a melt mixing technique (i.e. twin screw extrusion), and they were then injection moulded under various processing conditions and mould geometries. High aspect ratio nanotubes could be partially aligned in the parallel-to-flow direction, resulting from the in-plane shear flow …
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